Highlights of Materials Physics (DMP) Talks @ APS 2023 March Meeting – Part 2
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TABLE 1: Highlights of Materials Physics (DMP) Talks @ APS 2023 March Meeting – Part 2
| Paper | Author(s) | |
|---|---|---|
| 1 | Interlayer Coupling and Magnonic Features of Van Der Waals Magnetic Topological Insulator MnBi2Te4 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present results of Raman spectroscopy experiments on 1- to 5-septuple-layer-thick MBT flakes, which provide significant new insights into interlayer coupling, spin collective motion, and ordering. |
Wenjing Wu; Huaiyu Wang; Seng Huat Lee; Zhiqiang Mao; Venkatraman Gopalan; Junichiro Kono; Shengxi Huang; |
| 2 | Photo-induced Critical Magnetization Dynamics in Magnetic Topological Insulator MnBi2Te4 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate the ultrafast magnetization dynamics of the antiferromagnetic topological insulator MnBi 2Te 4 (MBT) using time-resolved magneto-optical Kerr effect (trMOKE) measurements as a function of temperature, magnetic field, fluence, and polarization. |
Peter Kim; Maxwell Poore; Hari Padmanabhan; Vladimir Stoica; Seng Huat Lee; Zhiqiang Mao; Venkatraman Gopalan; Richard Averitt; |
| 3 | Time-resolved Measurements of Magnetization Dynamics in Few-layer MnBi2Te4 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Mechanical exfoliation allows study of ultrathin (<10 layers) samples, allowing a wide variety of experimental tests. We present measurements of the ultrafast magnetization dynamics using pump-probe techniques across varying thicknesses, showing both slow thermally driven behaviours and magnon oscillations characteristic of such a material. |
Frederick Bartram; |
| 4 | Separation of Electron and Magnetic Order Dynamics in Magnetic Topological Insulator MnBi2Te4 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To understand the electron-phonon and electron-magnon coupling in MnBi 2Te 4, we have performed time- and angle-resolved photoemission spectroscopy (trARPES) experiments using 1.5 eV infrared pump and 6 eV ultraviolet probe. |
Khanh Duy Nguyen; Chenhui Yan; Chi Ian Ip; Haoran Lin; Woojoo Lee; Yuanlong Zheng; Seng Huat Lee; Chaoxing Liu; Binghai Yan; Zhiqiang Mao; Shuolong Yang; |
| 5 | Ultrafast Coherent Interlayer Phonon Dynamics in Atomically Thin Layers of MnBi2Te4 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We find that the coherent oscillation frequency, the photocarrier and coherent phonon decay rates all depend sensitively on the sample thickness. |
Liangyang Liu; Yongchao Wang; Yuchen Leng; Frederick Bartram; Luyi Yang; Xue Chen; Jinsong Zhang; Pu Yu; Miao-Ling Lin; Pingheng Tan; Yang Wu; Hao Li; Huining Peng; |
| 6 | Interfaces of B20 Compounds Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We employ supercell calculations where the area of the interface is restricted to the primitive cell interface. |
Jacob Gayles; Gina Pantano; Cole Gibson; Samuel Tkacik; |
| 7 | A Study on Polarization Switching in Hybrid Improper Ferroelectric Double Perovskites Oxides from First Principles Computations and Machine Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this study, we have identified a unique low-energy polarization switching path via out-of-phase rotation Q R- for a series of polar double perovskite oxides (DPOs). |
Gayathri Palanichamy; Ayana Ghosh; Saurabh Ghosh; |
| 8 | Strongly Stabilized Magnetic Phase Transitions in VdW Multiferroic NiI2 Under Hydrostatic Pressure Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we investigate the magnetic and structural phase transitions in bulk NiI2 with high-pressure temperature-dependent (30K-298K) Raman spectroscopy, optical linear dichroism (LD) and x-ray diffraction (XRD). |
Luiz Gustavo Pimenta Martins; Connor Occhialini; Qian Song; Jesse Smith; Joshua J Sanchez; Jesse Kapeghian; Danila Amoroso; Antia Botana; Matthieu Verstraete; Jing Kong; Riccardo Comin; |
| 9 | Inverse Band Gap Versus Polarization Relation in Ferroelectrics from First Principles Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we take an alternative route, and use first principles methods and the modern theory of polarization to perform a high-throughput search of ferroelectrics that display an inverse relation between electronic band gap and polarization, such that the band gap decreases as the polarization increases with an external parameter. To our knowledge, such material property has not been reported before, and we propose it as a new way to design small band gap ferroelectrics. |
Sebastian Reyes-Lillo; Nicolas Forero; Nicolas Varas; |
| 10 | Intrinsic Orbital Magnetoelectric Effect at Finite Temperature with The Kubo Formula Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we dirived the intrinsic OMEC with the Kubo formula at finite temperature. In this oral presentation, we will talk about the formalization and some application to specific models. |
Koki Shinada; Akira Kofuji; Robert Peters; |
| 11 | The Sliding Phase Transition in Ferroelectric Van Der Waals Bilayers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a theoretical picture that explains the conundrum of sliding ferroelectricity and the modelling of various associated observables. |
Ping Tang; Gerrit E Bauer; |
| 12 | Hallmarks of Electric and Magnetic Multipole Orders in The Band Structure of Variations of Diamond and Lonsdaleite Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have developed a comprehensive theoretical framework for electric and magnetic multipole order in compounds with crystal structures belonging to the diamond and lonsdaleite families. |
Roland Winkler; Uli Zülicke; |
| 13 | Role of Magnetization Parameters in Designing High-performance Spin-driven Thermoelectrics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Magnetic short-range order above the ordering temperature in some magnetic semiconductors, usually layered materials, can lead to a high thermopower extending to elevated temperatures deep in the paramagnetic domain. In this regard, the magnitude and temperature dependence of the short-range order are critical parameters for designing high-performance spin-driven thermoelectrics, which we discuss in this presentation. |
Morteza Jazandari; Jahanfar Abouie; Daryoosh Vashaee; |
| 14 | Predicting Defects and Doping of Semiconductors – Progress Toward High-throughput Calculations and Relevance to Materials Discovery Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: While modern defect theory and defect calculations allow for relatively accurate assessment of the intrinsic defect chemistry, doping limits and effective dopants, the calculations themselves are demanding, requiring significant human time and computational resources, and are hence, challenging to perform in a high-throughput fashion. In this talk I will review and discuss our efforts in automating defect calculations with goal of making them an integral part of the high-throughput materials discovery workflows. |
Vladan Stevanovic; |
| 15 | Structural Characterization of Boron-doped Alumina for Smart Lubricants Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this study we have carried out atomic modeling of alumina and the stable aluminum borate phase. |
Nicholas Wilson; Todd Lombardi; Ashish Kasar; William Wolfs; Pradeep Menezes; Eunja Kim; |
| 16 | Theoretical Investigation of Growth Mode for Oxidation Resistance Copper Film Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The exchange-correlation energy is described by the generalized gradient approximation (GGA) of Perdew–Burke–Ernzerhof (PBE) and projected augmented wave (PAW) method is employed. |
Bipin Lamichhane; |
| 17 | Examining The Ethane Selective Potential of MOFs for Ethylene Purification Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we combine ab initio calculations with dynamic sorption experiments to examine the effectiveness of pore geometry tuning in synthesizing ethane selective MOFs. |
Wells Graham; Jing Li; Feng Xie; Timo Thonhauser; |
| 18 | Modeling Electronic Coupling Between Heme Groups in Extracellular Cytochrome Polymers with First-principles Density Functional Theory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For OmcS and other similar peptide wires, these heme groups are identified in the literature as the charge carrier sites for an excess electron under aerobic conditions; orthogonalized heme charge carrier sites are used for modeling charge carrier evolution. To better understand the charge carrier dynamics in these peptide wires, we present canonical Kohn-Sham orbitals of isolated single and double heme group subsystems from the OmcS structure, manipulating the inter-heme geometry in order to tune the extracted charge carrier site energies and couplings. |
Luke Nambi Mohanam; Yuanming Song; Rafael Umeda; Khawla Mustafa; Douglas Tobias; Allon Hochbaum; Ruqian Wu; Sahar Sharifzadeh; |
| 19 | Metavalent Bonding Origins of Unusual Properties of Group IV Chacogenides Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Through theoretical analysis of evolution of MVB along continuous paths in structural and chemical composition space, we show that MVB arises in rocksalt chalcogenides stabilized as weakly broken symmetry states of the parent metal of simple cubic crystal of Group V metalloid. |
Raagya Arora; Umesh Waghmare; C. N. R. Rao; |
| 20 | Coherent Ising Machine for The Reverse Design of Composite Material Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose to run the combinatorial optimization process on a coherent Ising machine. |
Juan Han; |
| 21 | Ultrafast Control of Electrons By Opitcally Controlling The Lattice Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will argue (using work from my own group and others) that approaches developed in the search for strongly coupled multiferroics – materials in which an electrical polarization is strongly coupled to magnetism – may aid the search for materials that exhibit large changes in their functional properties when optically excited. |
Nicole Benedek; |
| 22 | Coherent Translational and Rotational Symmetry Control in Crystalline Materials with Light Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our theoretical exploration of energy transfer from large amplitude excitations of IR phonons we have found that strong coupling to non-zero wavevector phonons – those that are not optically active – is common and can dominate the lattice response, even condensing to form new nonequilibrium phases periodically modulated on extended length scales. |
Guru Khalsa; Jeffrey Kaaret; Nicole Benedek; |
| 23 | Light Control of Structural Phase Transitions in Complex Oxides Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We focus on KTaO 3, a cubic perovskite with no known structural phase transitions as a function of temperature, as a case study. |
Jeffrey Kaaret; Guru Khalsa; Nicole Benedek; |
| 24 | Ultrafast Manipulation of Multiferroic BiFeO3 Through Light-driven Phonons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present our recent results on the ultrafast manipulation of multiferroic BiFeO 3 by nonlinear phononics. |
Daniel Bustamante; Dominik Juraschek; Xianghan Xu; Sang-Wook Cheong; Wanzheng Hu; |
| 25 | Light-Assisted Creation and Control of Novel Ferroelectric Phases Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will reveal and explain a biquadratic competitive coupling between a high-frequency phonon and the main polarization (soft) mode that could result in a so-called squeezing effect of ferroelectric polarization – which we found to be responsible for the observed reversal of electrical polarization under terahertz laser pulses. |
Peng Chen; Charles Paillard; Changsong Xu; Hongjian Zhao; Yousra Nahas; Sergei Prokhorenko; Jorge Iniguez; Laurent Bellaiche; |
| 26 | Mid-infrared Light Control of Ferroaxial Order Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we propose a general optical approach to transiently excite single-domain ferroaxial order from a high-symmetry non-ferroaxial phase. |
Zhiren He; Guru Khalsa; Nicole Benedek; Craig Fennie; |
| 27 | THz Pump Driven Dynamics of Polar Nanoregions in Strontium Titanate Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use ultrafast x-ray diffraction to elucidate the dynamics the lattice of SrTiO 3 after resonantly driving the ferroelectric soft mode using strong, single-cycle THz pulses. |
Viktor Krapivin; Gal Orenstein; Zhuquan Zhang; Jade Stanton; Jiahao Zhang; Ankit Disa; Samuel Teitelbaum; Keith Nelson; Mariano Trigo; |
| 28 | Tunable Photostriction of Halide Perovskites Through Energy Dependent Photoexcitation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Overall, we propose that a detailed knowledge of the electronic structure and the band representations are the key ingredients to quantitatively understand photostriction in general insulators. |
Bo Peng; Daniel Bennett; Ivona Bravic; Bartomeu Monserrat; |
| 29 | Light-induced Structural Hidden Phases in Magnetite Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Magnetite (Fe 3O 4) is probably one of the most studied transition metal oxides due to its atypical phase transition. Near 125K, the system undergoes a metal-insulator transition … |
Benoit Truc; Paolo Usai; Francesco Pennacchio; Gabriele Berruto; Remi Claude; Ivan Madan; Vittorio Sala; Giovanni Vanacore; Siham Benhabib; Fabrizio Carbone; |
| 30 | New Pathways for Ultrafast Structural Control Via Nonlinear Phononics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Rev. X 11, 021067 (2021)) has emphasized an additional pathway, the nonlinear lattice polarizability, because of its large effect on optical properties when infrared active phonons are excited. In this theoretical work, we show that the nonlinear lattice polarizability gives additional strategies for selective structural control through tuned polarization, frequency, and duration/shaping of the THz pulse. |
Guru Khalsa; Jiaoyang Zheng; Jeffrey Moses; |
| 31 | Chiral Phonon Inverse Faraday and Barnett Effects Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use a combination of phenomenological modeling and density functional theory calculations to simulate the coherent excitation of chiral phonons, which generate real and effective magnetic fields within the material, which subsequently produces a magnetization. |
Dominik Juraschek; |
| 32 | Ultrafast Lattice Disordering in VO2 Accelerated By Electronic Collisional Forces Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The rapid loss of memory of the initial velocity suggests the presence of non-conservative forces in the photoexcited phase not accounted for in the potential energy, and that inertial dynamics are negligible in the VO2 ultrafast transition. We give arguments that suggest these non-conservative forces have an electronic origin. |
Gilberto De La Pena; Alfredo Correa; Olivier Delaire; Yijing Huang; Allan Johnson; Tetsuo Katayama; Viktor Krapivin; Ernest Pastor; David Reis; Samuel Teitelbaum; Luciana Vidas; Simon Wall; Mariano Trigo; |
| 33 | Resonant Tunneling Driven Metal-insulator Transition in Double Quantum-well Structures of Strongly Correlated Oxide Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we report an MIT induced by resonant tunneling (RT) in double quantum well (QW) structures of strongly correlated oxides. |
Hiroshi Kumigashira; |
| 34 | Growth of PdCoO2 Films with Controlled Termination By MBE and Determination of Their Electronic Structure By ARPES Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Utilizing the powerful combination of molecular-beam epitaxy (MBE) and angle-resolved photoemission spectroscopy (ARPES) we produce and study the effect of different terminating layers on the electronic structure of the metallic delafossite PdCoO 2. |
Qi Song; Jiaxin Sun; Christopher Parzyck; Ludi Miao; Qing Xu; Felix Hensling; Matthew Barone; Cheng Hu; Jinkwon Kim; Brendan Faeth; Hanjong Paik; Philip King; Kyle Shen; Darrell Schlom; |
| 35 | Localized Atomic Vibrations in Complex-oxide Structures By Monochromated EELS and Theory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we combine density-functional-theory (DFT) calculations and monochromated electron-energy-loss spectroscopy (EELS) in a scanning transmission electron microscope (STEM) to investigate atomic vibrations at interfaces and grain boundaries in complex oxides. |
Deliang Bao; Andrew O’Hara; Eric Hoglund; Jordan Hachtel; Patrick Hopkins; James Howe; Sokrates Pantelides; |
| 36 | Strain Tunable Interface States at The LaAlO3/SrTiO3 Interface Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we introduce an additional knob of mechanical strain through a homemade amplified strain cell, which is equipped with a high-precision capacitance sensor and can continuously tune the LAO/STO interface to a strain as large as 1.5% at 1.5K. Accordingly, we observe a large tunability on carrier density, mobility, spin-orbit coupling, and electron correlations. |
Mengke Ha; Qianyi Zhao; Chengyuan Huang; Zhenlan Chen; Zhiyuan Qin; Dawei Qiu; Qing Xiao; Changjian Ma; Danqing Liu; Guanglei Cheng; |
| 37 | Fabrication of SrTiO3 (111) Oriented 2D Electron Gases and Gate Effect on Shubnikov De-Haas Oscillation Frequency Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report in-situ measurements of the conducing interface formation between amorphous oxide materials on (111) oriented SrTiO 3. |
Autumn Heltman; Ziqiao Wang; Jack Glaser; Shalini Kumari; Qi Li; |
| 38 | Control of Valency and Structural Properties of [111] Oriented Oxide Interfaces Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For example, a [111] oriented LaMnO 3 bilayer is predicted to host topological states [1,2], which arises due to the combination of a buckled honeycomb lattice and spin orbit coupling [3]. We experimentally investigated these system by fabricating LaMnO 3 bilayers and thin films on different substrates by means of pulsed laser deposition and characterize them by scanning transmission electron microscopy. |
Thies Jansen; Nicolas Gauquelin; Alexander Brinkman; |
| 39 | Cryogenic Piezoresponse Force Microscopy of LAO/STO Nanostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For our devices, we will use Piezoresponse force microscopy (PFM), a non-destructive measurement technique that can reveal “hidden” electronic properties 2. |
James Keller; Joe Alboro; Patrick Irvin; Jeremy Levy; |
| 40 | Enhancement of Charge Order By Heteroepitaxial Strain in Manganite/Cuprate Multilayers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We examine the role that epitaxial strain plays on the enhancement of the CuO 2 charge order that was observed in superlattices of YBa 2Cu 3O 7- δ (YBCO) and La 2/3Ca 1/3MnO 3 (LCMO) [1]. |
Chao Zhang; Min Gu Kang; Riccardo Comin; John Wei; |
| 41 | Utilizing Electrochemical Transformations and Enhancing Carrier Doping in Functional Oxides By Electrolyte Gating Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will present two developing frontiers of ionic electrolyte gating within two contrasting mechanistic frameworks by illustrating most recent in-situ and real-time X-ray studies to deliver fundamental understanding of structural and chemical basis and their inherent links during gating on representative functional oxide heterostructures. |
Hua Zhou; Wei Chen; Dillon Fong; Hui Cao; Changjiang Liu; |
| 42 | Combining Ultrafast Optical and X-ray Spectroscopies for The Study of Emergent Ferromagnetism at The LaNiO3/CaMnO3 Interface Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we use a combination of resonant soft x-ray reflectivity and time-resolved magneto-optic Kerr effect, optical reflectivity, and transmissivity spectroscopies of variable-thickness LaNiO 3/CaMnO 3 superlattices to disentangle multiple interrelated electronic and magnetic processes driven by ultrafast high-field THz electric-field pulses. |
Abigail Derrico; Jay Paudel; Martina Basini; Vivek Unikandanunni; Christoph Klewe; Padraic Shafer; Michael Terilli; Mikhail Kareev; Jak Chakhalian; Stefano Bonetti; Alexander Gray; |
| 43 | Spatial and Time-resolved Single-dopant Band Bending Fluctuations in Semiconductors Measured with Electrostatic Force Microscopy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have developed a theoretical framework to quantitatively describe a metal-insulator semiconductor (MIS) device formed out of a metallic AFM tip, vacuum gap, and semiconducting sample [1]. |
Peter Grutter; |
| 44 | Persistent Luminescence in Rare-earth Doped Wide Band-gap Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, on the 30-year anniversary of the Nemota team’s discovery, we present the first detailed understanding of native point defects and RE (co)dopants in SrAl 2O 4 based on results from hybrid density-functional defect calculations, assign the absorption and emission bands experimentally observed in Eu-doped SrAl 2O 4, including the material’s characteristic green and blue emissions, to specific defect configurations and optical transitions, and identify charge carrier trapping centers responsible for the delayed luminescence. |
Khang Hoang; |
| 45 | Nanoscale Variations in The Rashba Parameter of BiTeI Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: By density functional theory (DFT) calculation, we identified the three types of defects that induce the charge rings. |
Ruizhe Kang; Jian-Feng Ge; Yang He; Zhihuai Zhu; Daniel Larson; Mohammed Saghir; Geetha Balakrishnan; Jennifer Hoffman; |
| 46 | Quantum Embedding Studies of Substitutional Er3+ Defects in Monolayer WS2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: An interesting option along these lines is tungsten disulfide (WS 2), a low spin-active-nuclei van der Waals material with a 2.1-eV bandgap and sizable lattice constant. Motivated by these considerations, we employ computational methods based on quantum embedding techniques to study an Er 3+ substitution (Er W) in monolayer WS 2. |
Gabriel López-Morales; Alexander Hampel; Vinod Menon; Cyrus Dreyer; Johannes Flick; Carlos Meriles; |
| 47 | Pseudogap Feature in The Electronic Density of States of Weakly Localized Ge2Sb2Te5 Samples Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have studied bulk single crystals of GST and Ge 2Sb 2Te 5(1−x) Se 5x(GSST) using a comprehensive approach that incorporates angle-resolved photoemission spectroscopy (ARPES) and magnetic field-dependent electronic transport measurements. |
Nicholas Mazzucca; Junjing Zhao; Marc Bockrath; Despina Louca; Utpal Chatterjee; |
| 48 | Spin Dependent Transient Spectroscopy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we provide proof-of-concept results on Si/SiO 2 metal-oxide-semiconductor capacitors. |
Kenneth Myers; Patrick Lenahan; James Ashton; Jason Ryan; |
| 49 | Magnetotransport Properties at Low-temperature of Thallium Doped PbTe Grown By Molecular Beam Epitaxy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate the low temperature magnetotransport properties of PbTe films doped Tl. |
Ali Nichols; Elizabeth Leblanc; Thomas Myers; Nikoleta Theodoropoulou; |
| 50 | Effects of Excess Electron-hole Pairs on Defect Migration in Semiconductors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, using density-functional theory, we investigate the role of significant concentrations of free electrons and holes in modifying the migration barriers. |
Andrew O’Hara; Daniel Fleetwood; Ronald Schrimpf; Sokrates Pantelides; |
| 51 | GGA-SCAN Failure to Describe Multiple Valance States of Copper Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: GGA-SCAN correctly predicts the gapping of e.g. Mott insulators and cuprite superconductors, where conventional GGA functionals fail. We test GGA-SCAN’s predictive power for thermochemical formation enthalpies of cuprous oxide Cu 2O, cupric oxide CuO, and YBa 2Cu 3O 7-δ (YBCO), and find that SCAN fails to predict the relative stability of Cu +I(d 10) vs. Cu +II(d 9), excessively stabilizing Cu +II(d 9) such that Cu 2O is thermochemically unstable. |
Hannes Raebiger; Noriyuki Egawa; Soungmin Bae; |
| 52 | High-throughput Study of S- and P-element Point Defects in 4H-SiC Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: 2 In a following large-scale endeavor, we have created and screened more than 40,000 single and double defects with s- and p-element dopants in 4H-SiC, discerning those of optimal stability and prospects. In this presentation, we explore this collection of defects and highlight extrinsic defect systems of particular interest. |
Oscar Bulancea-Lindvall; Joel Davidsson; Viktor Ivady; Rickard Armiento; Igor A. Abrikosov; |
| 53 | Numerical Investigations on Exciton Spin Relaxation Mechanisms in Colloidal CsPbBr3 Perovskite Nano-crystals Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work we present results of our recent Monte Carlo simulations to unravel the experimentally observed, robust, coherent dynamics of exciton FSS states in colloidal caesium lead bromide perovskite nano-crystals. |
Indrajit Wadgaonkar; Marco Battiato; |
| 54 | Independent Spin and Charge Transport Measurements in Hybrid Organic-Inorganic Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the spin and charge transport properties of HOIPs (namely CsPbBr 3 and MAPbBr 3) through independent measurements. |
Paul Bailey; Zeev Vardeny; |
| 55 | The Landé G-factor of Electrons in 2D-PEPI Studied By Transient Photoinduced Quantum Beatings Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have studied the Landé g-factor of electrons in pristine and doped PEPI films by the technique of photoinduced transient quantum beatings in the ps time domain. |
Rikard Bodin; Uyen Huynh; Jeffrey Blackburn; Valy Vardeny; |
| 56 | Ionic and Electronic Current Under Photo-illumination in A Chiral Organic Metal Halide Hybrid Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The four-terminal I-V and V-t measurements yielded real-time ionic and electronic currents and revealed single exponential intrinsic ion migration dynamics of distinct time constants as short as 3 s. Here, we report the effects of photo illumination of different wavelengths and intensities on the ion migration dynamics. |
Zhenqi Hua; Azza Ben-Akacha; Gabriel Gavet; Darian Discenza; Zihan Zhang; Hanwei Gao; Biwu Ma; Peng Xiong; |
| 57 | Ferroelectric Rashba Cofunctionality in [CH3PH3]SnBr3 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our study reveals the potential of MPSnBr3 for low-temperature applications in spintronics and quantum computing. |
RAVI KASHIKAR; |
| 58 | Investigation of Shift Current Along Off-polar Axis in Organic-inorganic Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: It was found that the photocurrent generation along the off-polar axis can be well explained by the shift current theory and cannot be explained by the classical bulk photovoltaic effect where internal electric fields make a great contribution to photocurrent generation. |
Taishi Noma; Fumito Araoka; Daigo Miyajima; |
| 59 | Large Optical Anisotropy Factors of A Chiral Bismuth Iodide Hybrid Organic-Inorganic Semiconductor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we demonstrate that thin films of a Bismuth-based chiral 0D hybrid organic-inorganic semiconductor (HOIS) exhibit large anisotropy values for circularly polarized light emission (CPLE) that approach 50% circular polarization. |
Alan Phillips; Liang Yan; Yi Xie; Matthew Hautzinger; Heshan Hewa Walpitage; Peter Sercel; David Mitzi; Zeev Vardeny; Wei You; Jeffrey Blackburn; |
| 60 | Correlation Between Band Gap Shifts Due to Symmetry Breaking and Spin-orbital Coupling in Halide Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This raises the question to what extent effects (i) and (ii) compensate each other or if they are correlated in some way. We addressed this question by a series of DFT band structure calculations on cubic ABX3 compounds where effects (i) and (ii) are both included; or both excluded, or including one at the time. |
Fernando Sabino; Xingang Zhao; Gustavo Dalpian; Alex Zunger; |
| 61 | First-principles Structure Prediction and Chirality Transfer in Chiral Organic-inorganic Perovskite Nanoplatelets Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We conduct a systematic geometry search and a series of DFT-based high-throughput structure relaxations, trying to enumerate the likely organic-inorganic conformations. |
RUYI SONG; Qinxuan Cao; Christopher Chan; Zhiyu Wang; Pui Yang Wong; Kam Sing Wong; Haipeng Lu; Volker Blum; |
| 62 | Spin Coherence and Spin Relaxation in Hybrid Organic-inorganic Perovskites MA0.3FA0.7PbI3 and MA0.3FA0.7Pb0.5Sn0.5I3 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report a systematic investigation of coherent spin precession, spin dephasing and spin relaxation of electrons and holes in two hybrid organic-inorganic perovskites MA 0.3FA 0.7PbI 3 and MA 0.3FA 0.7Pb 0.5Sn 0.5I 3 using time-resolved Faraday rotation spectroscopy. |
Haochen Zhang; Zhixuan Bi; Zehua Zhai; Meng Ye; Han Gao; Hairen Tan; Yong Xu; Luyi Yang; |
| 63 | Spin Polarized Charge Transport in 2D Chiral Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we integrated 2D chiral perovskites in van der Waals heterostructure based devices to characterize the spin polarized charge transport. |
Zihan Zhang; Zhenqi Hua; Peng Xiong; Hanwei Gao; |
| 64 | Temperature-dependent Band Gap of Halide Perovskite CsPbBr3 with First-principles Methods Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work sheds light on the connections between structural dynamics and optoeletronic properties of HaPs. |
Xiangzhou Zhu; Stefan Seidl; Guy Reuveni; Christian Gehrmann; Sebastián Caicedo-Dávila; Omer Yaffe; David Egger; |
| 65 | Interrogating and Manipulating Exchange Pathways in The Magnetic Topological Insulator MnBi2Te4 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Central to the phenomenology of these materials are exchange interactions – among localized spins constituting the magnetic order, as well as between localized spins and the topological bands. I will present findings from our recent work 1,2 employing optical spectroscopy to interrogate and manipulate these exchange couplings in MnBi 2Te 4, a quasi-two-dimensional antiferromagnetic topological insulator. |
Hari Padmanabhan; |
| 66 | A Class of Magnetic Topological Material Candidates with Hypervalent Bi Chains Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work highlights 1D chains as an unexplored structural motif for identifying topological materials, as well as the potential for rich physical phenomena in the Ln 3MPn 5 family. |
Jason Khoury; Bingzheng Han; Milena Jovanovic; Ratnadwip Singha; Xiaoyu Song; Raquel Queiroz; N. Phuan Ong; Leslie Schoop; |
| 67 | Charge Density Wave Order and Fluctuations Above TCDW and Below Superconducting Tc in The Kagome Metal CsV3Sb5-xSnx Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The newly discovered kagome metal system AV 3Sb 5 ( A = K, Rb, Cs) features both superconducting and charge density wave (CDW) instabilities, and provides a platform for a variety of exotic quantum phenomena that motivate their great current interest. We present a comprehensive set of measurements, including x-ray, bulk magnetization and specific heat measurements, over a broad range of temperatures from 300 K to 2 K on the kagome metal CsV 3Sb 5 and its hole-doped variation CsV 3Sb 5-xSn x in single crystal form, allowing us to reveal the temperature evolution of the CDW state and the co-existence of the CDW with superconductivity at low temperatures. |
Qiang Chen; Bruce Gaulin; Dong Chen; Walter Schnelle; Claudia Felser; |
| 68 | Study of Quantum Oscillations in RV6Sn6 Kagome Magnets Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: I will present the nature of Fermi surface topology and mass of Fermions based on the analysis of de Haas van Alphen oscillations in RV 6Sn 6 compounds. |
Chetan Dhital; Ganesh Pokharel; Brady Wilson; David Graf; Stephen Wilson; |
| 69 | Coexistence of Multiple Flat Bands in Non-Hermitian Parity-Time Symmetric Lattices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Although these flat bands were known to be bound states in continuum (BIC), we demonstrate that by engineering the lattice couplings, this would not necessarily hold true. We observe a flat band which is a bound state emerging at a critical point before reaching the exceptional point, and the curvature of the dispersive band changes before and beyond this critical point. |
Aria Hajikhani; Hamidreza Ramezani; |
| 70 | Investigating Electronic Structures of AV3Sb5 Kagome Metal Family Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This family of layered metals exhibits CDW, unconventional superconductivity, and non-trivial band topology due to multiple saddle points near the Fermi level. To aid in understanding this material class, we computationally studied the band structure and Fermi surface of these families and applied the Lindhard susceptibility calculations to study the degree of Fermi surface nesting. |
Farnaz Kaboudvand; |
| 71 | Realization of Ideal Flat Band By Rotated D-orbitals in Kagome Metals Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Most critically, the theoretical conditions for the existence of ideal FB in Kagome metals, beyond the simplest Kagome lattice model, are unknown. Here, based on tight-binding model analyses of the interplay between d-orbital symmetry and underlying Kagome lattice symmetry, we establish such conditions of minimal FB model. |
Dongwook Kim; Feng Liu; |
| 72 | Engineering Tilted Dirac Cones and Topological Phase Transitions in Strained Kagome Lattices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study the effects of a uniform strain on the electronic and topological properties of the 2D kagome lattice using a tight-binding formalism that includes intrinsic and Rashba spin-orbit coupling (SOC). |
Miguel Mojarro Ramirez; Sergio Ulloa; |
| 73 | Transport Properties of Kagome Metals RV6Sn6 (R=Sc, Lu, Y): What Makes Sc Special? Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our detailed transport measurements reveal strong anisotropy in the ScV 6Sn 6 compound. We discuss the differences and similarities in the electronic transport properties of these three isoelectronic and isostructural vanadium kagome metals. |
Shirin Mozaffari; Richa Pokharel Madhogaria; William Meier; Hasitha Suriya Arachchige; Takahiro Matsuoka; Calen Allen; Jeremy Driver; John Villanova; SEOUNGHUN KANG; Mina Yoon; David Mandrus; |
| 74 | Searching for Electronic Flat Bands Beyond The Kagome Framework Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The propensity for flat electronic bands to support topological and correlated behaviors has attracted considerable interest in recent years. It has now been well established that … |
Paul Neves; Shiang Fang; Joshua Wakefield; Ryan McTigue; Joseph Checkelsky; |
| 75 | From Loop-current Chern Metal to Pair Density Wave and Higher-charge Superconductivity in Kagome Superconductors AV3Sb5 (A=K, Cs, Rb) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We argue that the essential phenomenology can be captured by a doped orbital Chern insulator with staggered loop currents and Chern Fermi pockets carrying concentrated Berry curvature. |
Ziqiang Wang; Sen Zhou; |
| 76 | Engineering High Chern Number Insulators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we propose a practical method to design the model of the two-dimensional Chern insulators with arbitrary high Chern number using controllable one-dimensional Rice-Mele model. |
Sungjong Woo; Seungbum Woo; Hee Chul Park; |
| 77 | Interplay Between Crystal Structure, Symmetry and Topology in Kagome Systems with Different Stackings Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present our results on the 3D tight-binding models and group theoretical analyses for 3D Kagome systems with different stacking ways that correspond to real materials, such as the the simple stacking (AV3Sb5) and the rhombohedral stacking (Co3S2Sn2). |
Fan Yang; Turan Birol; |
| 78 | Quantum Metric Nonlinear Hall Effect in A Topological Antiferromagnetic Heterostructure Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: By interfacing even-layered MnBi 2Te 4 (a PT-symmetric antiferromagnet (AFM)) with black phosphorus, we observe a new nonlinear Hall current, which switches direction upon reversing the AFM spins and exhibits distinct scaling that suggests a non-dissipative nature. |
Anyuan Gao; Suyang Xu; |
| 79 | Strain Engineering of Quantum Geometry in Magnetic Topological Insulators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using density functional theory based ab initio calculations and low energy models, we explore the quantum metric dipole-induced intrinsic non-linear Hall effect (INHE) in MnBi$_{2n}$Te$_{3n+1}$ thin films. |
Barun Ghosh; Sugata Chowdhury; Tay-Rong Chang; Hsin Lin; Bahadur Singh; Suyang Xu; Arun Bansil; |
| 80 | Magnetic Photocurrent in Even-layered Topological Antiferromagnet MnBi2Te4 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present our experimental study of the optoelectronic responses in even-layered MnBi 2Te 4. |
Zumeng Huang; Zhe Sun; Anyuan Gao; Tiema Qian; Siyuan Ding; Jian Tang; Kenji Watanabe; Takashi Taniguchi; Ni Ni; Suyang Xu; Qiong Ma; |
| 81 | Magnetic-Field Induced Weyl State in Intrinsic Magnetic Topological Insulator MnBi2nTe3n+1 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present our recent studies on intrinsic magnetic topological insulators MnBi2nTe3n+1 [1-4]. |
Seng Huat Lee; |
| 82 | Theoretical Modeling of Magnetic Phase Evolution in Bulk N[Bi2Te3] X MnBi2Te4 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we use density functional theory (DFT) to observe how differences in energies and band structure reveal antiferromagnetic to ferromagnetic to nonmagnetic phase transitions of n[Bi 2Te 3] x MnBi 2Te 4 (nMBT) derivative compounds. |
Jalen Garner; Barun Ghosh; Kevin Garrity; Deepti Jain; Bryan Berggren; Daniel Dessau; Seongshik Oh; Sugata Chowdhury; |
| 83 | Tunable Magnetism, Charge Carrier Type and Density in Mn(Bi,Sb)4Te7 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To observe this state, tuning its magnetism from an AFM to ferromagnetic (FM) state is necessary and its chemical potential m is also required to be tuned to the charge neutrality point (CNP). In this talk, we will show these desired features are accessible in the Mn(Bi 1-xSb x) 4Te 7 alloy system. |
Yingdong Guan; Seng Huat Lee; Zhiqiang Mao; |
| 84 | Hydrogen-tuned Magnetotransport Anisotropy and Bandstructure of MnSb2Te4 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report on the post-growth tuning of magnetic anisotropy and the bandstructure of MST by injecting/extracting ionic hydrogen (H+). |
Entela Buzi; Xiaxin Ding; Afrin Nahar Tamanna; Ayesha Lakra; Haiming Deng; Kamil Sobczak; Kyungwha Park; Lia Krusin-Elbaum; |
| 85 | Pressure Tuning of Electronic and Magnetic Properties in A Topological Antiferromagnet Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we studied the magnetotransport properties of the MnBi 2Te 4 thin films under hydrostatic pressure. |
Su Kong Chong; David Graf; Chao Lei; Seng Huat Lee; Masaki Tanabe; Ting-Hsun Yang; Zhiqiang Mao; Allan MacDonald; Kang-Lung Wang; |
| 86 | Tunable Magnetic Domains in Ferrimagnetic MnSb2Te4 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we use magnetic force microscopy (MFM) to characterize the ferrimagnetic domains of MST. |
Tatiana Webb; Xiaxin Ding; Afrin Nahar Tamanna; Cory Dean; Dmitri Basov; Lia Krusin-Elbaum; Abhay Pasupathy; |
| 87 | Metastability and Topology in The Magnetic Topological Insulator MnBi2Te4 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To this end, we used PBE+U calculations where Hubbard U was tuned with diffusion Monte Carlo techniques. |
Jeonghwan Ahn; Ganesh Panchapakesan; Jaron Krogel; |
| 88 | Optical Kerr Effect and Terahertz Spectroscopy in An Intrinsic Ferromagnetic Topological Insulator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we report a newly discovered ferromagnetic topological insulator, Cr(Bi,Sb) 6Te 10 (CBST). |
Xingyue Han; Hee Taek Yi; Seongshik Oh; Liang Wu; |
| 89 | Delicate Ferromagnetism in MnBi6Te10 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work provides a clear pathway for nanoscale defect-engineering towards the realization of topological quantum phases. |
Shuolong Yang; Chenhui Yan; Yanglin Zhu; Leixin Miao; Sebastian Fernandez-Mulligan; Emanuel Green; Ruobing Mei; Hengxin Tan; Binghai Yan; Chaoxing Liu; Nasim Alem; Zhiqiang Mao; |
| 90 | Application of The Faddeev Technique to The Bound States of Three Charged Particles in Two Dimensions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we present the application of the Faddeev technique for the exact numerical solution of the Schrödinger equation for three-charged particle bound systems in two dimensions. |
Mohammadreza Hadizadeh; Kamyar Mohseni; Andre J Chaves; D.R. da Costa; Tobias Frederico; |
| 91 | Mottness and Magnetism in Moiré Bilayer Transition Metal Dichalcogenides: A Cluster Dynamical Mean-field Study Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I present a combined cluster dynamical mean-field study in real space (cellular dynamical mean-field theory) and reciprocal space (dynamical cluster approximation) of the MHM. |
Marcel Klett; Seher Karakuzu; Patrick Tscheppe; Jiawei Zang; Thomas Maier; Michel Ferrero; Andrew Millis; Thomas Schäfer; |
| 92 | Lithium Ion Intercalation Induced Dynamic Evolution of Moiré Superlattices in Graphene on SiC (0001) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we employed density functional theory calculations and molecular dynamics simulations to understand the Li + ion intercalation dynamics in bilayer graphene on SiC (0001) substrate observed in state-of-the-art in-situ low-energy electron microscope experiments. |
xue yan; Christian Brandl; Wenxin Tang; Gang Li; Zhe Liu; xue yan; |
| 93 | Generalized Force Field Methodology for Moiré Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, a generalized force field methodology for the relaxation of large moiré heterostructures is proposed. |
Gabriel Bester; Carl Nielsen; Miguel Da Cruz; Abderrezak Torche; |
| 94 | Computational Studies on The Electrochemical Performance of Dopedand Substituted Ti3C2Tx (T = O,OH) MXene Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose that the primary mechanism leading to the enhanced value of the capacitances due to nitrogen doping is surface redox activity. |
MANDIRA DAS; |
| 95 | Tuning The Electronic Structure of Twisted Transition Metal Dichalcogenides Heterotrilayer with An Applied Electric Field Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Interestingly, the wavefunctions of the Γ-derived bands are delocalized over the three layers and realize a honeycomb lattice at the moiré scale with inequivalent A and B sites, whereas K -/K +- derived bands give rise to a triangular lattice and are fully localized on specific layers. From these ab initio insights, we construct an effective Hamiltonian to study the correlated hole states that arise when the system is doped. |
Valerio Vitale; Johannes Lischner; Aidan Campbell; Mauro Brotons-Gisbert; Hyeonjun Baek; Kenji Watanabe; Takashi Taniguchi; Jonathan Ruhman; Brian Gerardot; |
| 96 | Spin-polarization Anisotropy in Bent Tungsten Diselenide Nanoribbons and Excitonic States Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we studied the WSe2 nanoribbons under different bending curvatures and doping with density functional theory and their optical absorption and excitonic states with many-body perturbation GW and BSE (Bethe-Salpeter equation) methods. |
Hong Tang; |
| 97 | Scaffold-guided Crystallization of Perovskite Nanowire Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we introduce a method to grow metal halide perovskite crystals as vertical nanowire arrays with large surface areas for photophysical processes, such as exciton dissociation. |
Aida Alaei; Stephanie Lee; Sepehr Mohajerani; Stefan Strauf; Ben Schmelmer; |
| 98 | First-principles Study on The Defect Properties of Two-dimensional Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We perform first-principles calculations based on the density functional theory (DFT) to investigate the structural and electronic properties of defects in hBN and WSe 2, two prototypical 2D systems. |
Sunho Park; Mina Yoon; Young-Kyun Kwon; |
| 99 | Identification and Manipulation of Defects in Black Phosphorus Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce States Projected Onto Individual Layers (SPOIL) quantities which provide information about atom-wise and orbital-wise contributions to bias-dependent features observed in STM images. |
Shobhana Narasimhan; Devina Sharma; Sourav Mondal; Rishav Harsh; Jerome Lagoute; |
| 100 | Donor Doping of Corundum Aluminum Gallium Oxide Alloys Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use hybrid density functional theory calculations to examine the prospects for n-type doping high-Al content corundum ALGO alloys with H, Si, Ge, Sn, Hf, Zr, and Ta. |
Darshana Wickramaratne; Joel Varley; John Lyons; |
| 101 | The Effect of Strain on The Band Offsets in Monoclinic Β-(AlxGa1-x)2O3 Alloys Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The alignment of energy bands between the substrate and the strained epitaxial film remains an open question. We propose a model for such band offsets in the specific case of β-(Al xGa 1-x) 2O 3 alloys grown on beta Ga 2O 3 substrates. |
Rafal Korlacki; Teresa Gramer; Megan Stokey; Vanya Darakchieva; Mathias Schubert; |
| 102 | Extrinsic Polarons: Engineering Coexistence Between Free and Trapped Carriers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present an innovative approach for designing extrinsic polaron systems in which the coexistence between delocalized and localized states may be tuned through extrinsic polaron dopants. |
Shuaishuai Yuan; Kirk Bevan; |
| 103 | Towards Learning A Lattice Boltzmann Collisional Operator Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present preliminary results in which a neural network is successfully trained as a surrogate of the single relaxation time BGK operator. |
Alessandro Gabbana; Alessandro Corbetta; Vitaliy Gyrya; Daniel Livescu; Joost Prins; Federico Toschi; |
| 104 | Learning Closure Models with Neural Operator-embedded Differentiable CFD Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We discuss an approach using the differentiable physics paradigm that combines known physics with machine learning to develop closure models for the Navier-Stokes equations. |
Varun Shankar; Venkat Viswanathan; |
| 105 | A Data-free Partial Differential Equation (PDE) Solver in The Framework of Physics-informed Neural Networks (PINN) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, combining the advantages of finite difference method (FDM) and PINN, a new data-free PDE solver called PINN-FDM is introduced. |
Xiaoyu Tang; Boqian Yan; |
| 106 | Defending Smart Electrical Power Grids Against Cyberattacks with Deep Q-learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate the workings of our deep-Q learning solution using the benchmark W&W 6-bus and the IEEE 30-bus systems, the latter being a relatively large-scale power-grid system that defies the conventional Q-learning approach. |
Mohammadamin Moradi; Ying-Cheng Lai; Yang Weng; |
| 107 | Using Transfer Learning to Generate Samples for Large Systems of The Spin-fermion Hamiltonian Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The main bottleneck of our previous work is generating the training data set requires time and memory resources that scale unfavorably as the sytem’s size. We present a transfer learning approach in which we train neural networks on smaller systems and by appropriately modifying them we build models that can generate samples for far larger systems. |
Georgios Stratis; Pau Closas; Adrian Feiguin; |
| 108 | Learning Coronal Nonlinear Force-Free Magnetic Fields Through Differentiable Rendering Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We consider the ill-posed problem of computing the 3D magnetic field above the surface of the sun (the corona) from the vector magnetic field on the surface (the photosphere) and 2D optical projections of plasma flowing through magnetic field lines in the corona. |
Phillip Lo; Eric Jonas; |
| 109 | Multiscale Perturbed Gradient Descent: Chaotic Regularization and Heavy-Tailed Limits Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we introduce multiscale perturbed GD (MPGD), a novel optimization framework where the GD recursion is augmented with chaotic perturbations that evolve via an independent dynamical system. |
Soon Hoe Lim; |
| 110 | Data-driven Discovery and Interpolation of Green’s Functions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To gain a deeper understanding of nature, we present a data-driven approach to mathematically model unknown physical systems, by learning a Green’s function for its hidden, governing partial differential equations. |
Harshwardhan Praveen; Nicolas Boulle; Christopher Earls; |
| 111 | Toward Automated Design of Optimized High Energy Density Material Science Experiments on The Z Machine Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: A computational framework has been developed that analyses the statistical spread in LTGS timings to calculate the probability of experiment failure. |
Andrew Porwitzky; Justin Brown; William Lewis; |
| 112 | Using Deep-learning to Uncover Physics of Magnetic (charged Particle) Confinement in Magnetized Liner Inertial Fusion Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We built an artificial neural network surrogate trained on expensive physics calculations of magnetized fast charged-particle transport and associated secondary neutron emission in MIF plasmas used to diagnose BR. |
William Lewis; Owen Mannion; Christopher Jennings; Daniel Ruiz; Patrick Knapp; Matthew Gomez; Adam Harvey-Thompson; Stephen Slutz; Kristian Beckwith; Kristian Beckwith; |
| 113 | MADEM: Energy-efficient Training of Deep Neural Networks Using Memristor Arrays Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: By using a novel learning algorithm compatible with analog in-memory-computing provided by memristor array, we demonstrate efficient training of deep neural networks, which is not only biologically plausible (local update rule), but also energy-efficient (5 orders of magnitude smaller), and faster (36 smaller latency). |
Suin Yi; Suhas Kumar; |
| 114 | Automatic Detection of Fake Tweets About Covid-19 Vaccine in Portuguese Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We developed BERTVacPort, an approach to automatically and reliably label tweets about vaccines in Portuguese as reliable or fake. |
Rafael Geurgas Zavarizz; Leandro Tessler; |
| 115 | Transferable Coarse Grained Free Energy Models Enabled By Active Learning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work helps pave the way towards efficient autonomous training of reliable and uncertainty aware many-body machine learned coarse grain models. |
Blake Duschatko; Jonathan Vandermause; Nicola Molinari; Boris Kozinsky; |
| 116 | 3D Vector Nanoimaging of Spin Textures in Nanostructured Magnetic Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report the creation of more than 100 stable TMMs in a frustrated ferromagnetic meta-lattice, which is made of silica nanospheres and infiltrated nickel between the spheres. |
Chen-Ting Liao; |
| 117 | Non-local Chirality Breaking in Curvilinear Magnetic Nanoarchitectures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using the full-scale simulation we study how the texture is changing with respect to the introduced sample asymmetry. |
Oleksii Volkov; Daniel Wolf; Oleksandr Pylypovskyi; Attila Kákay; Denis Sheka; Bernd Büchner; Jürgen Fassbender; Axel Lubk; Denys Makarov; |
| 118 | Magnetic Textures in Topological Magnetic Nanoparticles Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Investigating topological materials in a nanoparticle system holds promise to demonstrate novel spin textures due to the increased number of possible symmetries and length scales compared to bulk and thin-film systems. We use spin dynamics simulations to characterize the magnetic textures of cubic nanoparticles as they undergo a field-cooling, producing phase diagrams of the topological charge with variation of the DMI and external field. |
Cole Gibson; Jacob Gayles; |
| 119 | Lifetime Enhancement of An Atomic Spin Chain Near A Diabolic Point Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The work provides prospects for optimizing spintronic lifetimes through engineering of quantum states. |
Robbie Elbertse; Taehong Ahn; Jiyoon Hwang; Jeongmin Oh; Jorn Rietveld; Fernando Delgado; Andreas Heinrich; Sander Otte; Yujeong Bae; |
| 120 | Magneto-Optical Effects in Nanostructures of Van Der Waals Antiferromagnet Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We argue that the abrupt change in the spin arrangement with the presence of sharp edges allow nano-magnetic structures to exhibit different MO effect compared to bulk by using NiPS3 as a prototype since the photoluminescence here is correlated to spin. |
Vigneshwaran Chandrasekaran; Christopher DeLaney; Christopher Lane; Jian-Xin Zhu; Xiangzhi Li; Huan Zhao; Jennifer Hollingsworth; John Watt; Andrew Jones; David Dunlap; Andrei Piryatinski; Sergei Ivanov; Han Htoon; |
| 121 | Magnetism in Two-Dimensional Ilmenenes: Intrinsic Order and Strong Anisotropy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we report on not only the structural and electronic properties, but also the magnetic properties of the family of ilmenene-like layers with 3d transition metals. |
Andres Ayuela; Rodrigo Aguilera-del-Toro; Mikel Arruabarrena; Aritz Leonardo; |
| 122 | Magneto-dependent Photovoltages and Switching in Permalloy Metasurfaces Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Permalloy is a soft ferromagnetic material with very high magnetic permeability, commonly used in various magnetic and magnonic studies. Recently, it was found that permalloy … |
MD Afzalur Rab; David Keene; Natalia Noginova; |
| 123 | Magnetic Properties of Mn3Sn Thin Films Depending on Annealing Condition Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we study the spin-orbit torque (SOT) switching properties of the Mn 3Sn depending on the annealing condition. |
subin Im; Seongbin Seo; Dongchan Jeong; Sanghwa Lee; jiseok Yang; Kab-Jin Kim; Byong-Guk Park; Sanghoon Kim; |
| 124 | Symmetry in Light-driven Magnons and Chiral Phonons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We theoretically study the impact of light-driven structural changes on the magnetism of a bilayer honeycomb lattice. |
Ze-Xun Lin; Swati Chaudhary; Wesley Roberts; Bowen Ma; Martin Rodriguez-vega; Benjamin Wieder; Gregory Fiete; |
| 125 | Tight-binding Model Predicts Frontier Molecular Orbitals and Optical Gap for Conjugated Oligomers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The tight-binding parameters from homo-oligomers and alternating co-oligomers of the constituent monomers, without adjusting, were used to define the tight-binding model of IDTBR Here, we extend this model to describe the energy and structure of excitons on oligothiophenes and IDTBR. |
Vishal Jindal; Michael Janik; Scott Milner; |
| 126 | Optical Studies of Chirality Induced Pi-conjugated Polymer Films Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have studied the optical and magneto-optical properties of organic thin films consisting of π-conjugated polymers blended with chiral molecules, using absorption, electro-absorption (EA), circular dichroism (CD), and photoluminescence (PL) spectroscopies. |
Prashanna Poudel; Heshan Hewawalpitage; Xin Pan; Christoph Boehme; Zeev Vardeny; |
| 127 | Photophysics and Photochemistry of Singlet Fission Materials in Microcavities Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: An important intermediate step in SF is the formation of a spin-entangled triplet-pair state (TT), whose properties are critical in mediating both the generation of free triplets and the reverse process of triplet-triplet annihilation. We systematically examine formation of the TT state and its properties in functionalized acenes depending on the derivative and film morphology, as well as external parameters such as temperature, magnetic field, and excitation energy. |
Winston Goldthwaite; Roshell Lamug; Michael Chase; John Anthony; Oksana Ostroverkhova; |
| 128 | Ultrafast Generation of The Triplet-triplet Spin Biexciton with Weak Binding Energy in Singlet Fission Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Accordingly, we have investigated the SF candidate material PTP (P = pentacene, T = tetracene) which has been shown to display both fast triplet-triplet generation as well as slow triplet recombination 1. |
Moshe Chesler; Sumitendra Mazumdar; |
| 129 | Photophysics and Optoelectronics of Functionalized Acenes and Anthradithiophenes in Cavities Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a systematic study of strong coupling in functionalized tetracenes (R-Tc) and anthradithiophenes (R-ADT) depending on film crystallinity, morphology, placement in the cavity (to achieve various degrees of overlap with the cavity electric field), and cavity design. |
Roshell Lamug; Winston Goldthwaite; Ahasan Ullah; John Anthony; Li-Jing Cheng; Oksana Ostroverkhova; |
| 130 | Exciton-Polariton Condensation in Organic Host-guest Systems at Room Temperature Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report a new universal platform of supramolecular organic systems to realize room temperature condensation with the potential to incorporate more than 1000 commercially available dyes across the visible spectrum. |
Prathmesh Deshmukh; Sitakanta Satapathy; Evripidis Michail; Andrew Olsson; Rezlind Bushati; Ravindra Kumar Yadav; Mandeep Khatoniar; Junsheng Chen; Bo Laursen; Matthew Sfeir; Amar Floor; Vinod Menon; |
| 131 | Organic Exciton-Polariton Lattices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report an approach that uses Focused Ion Beam (FIB) etching to pattern a planar microcavity. |
Ravindra Kumar Yadav; Sitakanta Satapathy; Prathmesh Deshmukh; Biswajit Datta; Addhyaya Sharma; Vinod Menon; |
| 132 | Evaluation of The Photostability of An Organic Solar Cell Using A Field-Effect Transistor Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Light-induced deterioration of performance in organic solar cells (OSCs) is a key barrier to commercialization. Because the photostability of OSCs is highly dependent on the … |
SWARUP BISWAS; Yongju Lee; Hyojeong Choi; Hyeok Kim; |
| 133 | Photo-Active Covalent Organic Frameworks (COFs) for Photochemical Transformations and Environmental Remediation Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we demonstrate that photoactive COFs are effective heterogeneous photocatalysts for organic transformations. |
Rafael Verduzco; |
| 134 | Performing UV Photochemistry with Blue Light Using Triplet Fusion Upconversion Micelles Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Blue-to-UV triplet fusion upconversion offers a solution by converting two blue photons that are more transmissive into a higher energy UV photon. |
Brendan Wirtz; Qi Zhou; Tracy Schloemer; Manchen Hu; Danielle Mai; Daniel Congreve; |
| 135 | NIR Sensing Ambipolar Organic Phototransistor Based on Solution Processable N-Type Semiconductor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We developed ambipolar OPT using the single component approach with donor-acceptor type molecules in the active layer. |
Hwa Pyeong Noh; Yongju Lee; Mi Ri Nae Lee; SWARUP BISWAS; Hyeok Kim; |
| 136 | Enhanced Infrared Photosensitivity in DPP Based Polymer Sensitized MoS2 Phototransistor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our study revealed that 2D semiconductor hybrid heterostructure with IR absorbing polymer may pave the way to design the high sensitivity IR photodetector for promising optoelectronic applications. |
Priyanka Das; Brian Shook; Ranganath Don; Daijun Feng; Ralu Divan; Daniel Rosenmann; Anirudha Sumant; Qiqi Zhang; Qilin Dai; Colleen Scott; Nihar Pradhan; |
| 137 | High Ambipolar Mobility in Cubic Boron Arsenide Revealed By Transient Reflectivity Microscopy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: With near band gap 600-nanometer pump pulses, we found a high ambipolar mobility of 1550 ± 120 square centimeters per volt-second, in good agreement with theoretical prediction. |
Shuai Yue; Fei Tian; Xinyu Sui; Mohammadjavad Mohebinia; Xianxin Wu; Tian Tong; Zhiming Wang; Bo Wu; Qing Zhang; Zhifeng Ren; Jiming Bao; Xinfeng Liu; |
| 138 | Exploring Erbium-doped Ceria As A New Platform for Telecom-wavelength Quantum Memory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a study of the optical properties of a resonantly-excited Er ensemble, which shows long excited state lifetimes (up to 6 ms) and well-resolved crystal field splitting with narrow inhomogeneous peaks (<100 GHz). |
Gregory Grant; Jiefei Zhang; Kathryn Sautter; Sean Sullivan; Manish Kumar Singh; Ignas Masiulionis; Jessica Martins; Connor Horn; Rishi Chebrolu; John Freeland; F. Joseph Heremans; Supratik Guha; |
| 139 | The Role of The Dopant on Electronic Structure of Er-doped Oxides for Quantum Memory Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we performed XAS at the Advanced Photon Source to probe the electronic structure of Er-doped oxides as a function of the doping level. |
Jessica Barbosa Martins; Gregory Grant; Kathryn Sautter; Rishi Chebrolu; Supratik Guha; John Freeland; |
| 140 | Ab Initio Crystal Field Splittings for Lanthanide Dopants in Oxide Materials for Quantum Information Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: [1] Here, we deploy an ab initio extraction of crystal field parameters explored by Dadi Dai et al. [2] With ab initio,we extracted crystal field parameters in Er defects in hosts like Y2O3, and in combining the extracted crystalfield parameters with the effective operator Hamiltonian approach we were able to compare the theoretical crystal field energy correction with experimental values directly and obtained a relatively good match. |
Yueguang Shi; Michael Flatté; |
| 141 | Designing Stoichiometric Materials with Eu3+ for Photon-based Quantum Information Storage Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Rare-earth cations are a promising platform for quantum information storage because of their long coherence times and well-shielded 4f orbital optical transitions. Though systems … |
Zachary Riedel; Donny Pearson; Elizabeth Goldschmidt; Daniel Shoemaker; |
| 142 | In Situ Charge Detection with Single Quantum Dot Molecules Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe the predicted spectral patterns of a single QDM under the influence of nearby charge states for the spatially direct and indirect neutral excitons and propose a means to utilize the trion state to break symmetry and distinguish between positive and negative charges. |
Mark Woodall; Adityaa Bajpai; Zachary von Jena; Allan Bracker; Samuel Carter; Michael Scheibner; |
| 143 | Electrostatic Definition and Control of Quantum Dots in Semiconductor Lead Telluride Nanowires Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present our progress in defining and manipulating quantum dots in PbTe nanowires using top-gate electrodes. |
Seth Byard; Maksim Gomanko; Sergei Sheludiakov; Sander Schellingerhout; Erik P. A. M. Bakkers; Sergey Frolov; |
| 144 | Model Study on Effect of S=1 Central Spins to Spin Decoherence Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Although the dominant mechanism for decoherence at the clock transition is unknown, recent experimental data on molecular magnetic crystals indicates that the decoherence time depends on the density of central spins. In this talk, we consider precisely this dependence by simulating a model S = 1 qubit coupled to many other central spin. |
Haechan Park; Silas Hoffman; Xiao Chen; Hai-Ping Cheng; |
| 145 | Quantum-information Theory of Magnetic Field Influence on Circular Dots with Different Boundary Conditions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Comparative analysis reveals similarities and differences of the surface influence on the properties of the structure. |
Oleg Olendski; Hibah Shafeekali; |
| 146 | Direct Detection of Magnetoelectric Effect in Fe3 Trimer Using A Tunnel Diode Oscillator Detector Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report evidence of a change in the magnetic susceptibility of an Iron 3 single-molecule magnet trimer due to an applied electric field of approximately 16 ppb per kV/m. |
Marc lewkowitz; Johnny Adams; Neil Sullivan; Ali Sirusi; Ping Wang; Michael Shatruk; Vivien Zapf; |
| 147 | Distance Dependance of Proximity Exchange in A Molecular Quantum Magnetic Sensor Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In 2D magnetic materials, such as CrI 3, large discrepancies in magnetic fields have been measured by different methods. We propose that molecular color centers can be used to address this discrepancy by allowing for a single sensing modality to be used over a wider range of distances and orientations. |
Kathleen Mullin; James Rondinelli; |
| 148 | Electrical Initialization and Readout of Triplet Spins Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present work on devices that incorporate two relatively new organic spin phenomena, namely singlet fission (SF) and chirality induced spin selectivity (CISS), as a room temperature initialization and readout mechanism of triplet spins. |
Taylor Wagner; |
| 149 | Coherent Interactions and Entanglement of Hydrogen Molecules in The STM Junction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: By tailoring the oscillation frequency through external bias, we report two spectral signatures of the interaction among multiple H 2 molecules. |
Yunpeng Xia; Likun Wang; Dan Bai; Wilson Ho; |
| 150 | Magnon Engineering in Vanadium Tetracyanoethylene Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we expand our control over V[TCNE] x magnetization dynamics by creating V[TCNE] x/V[TCNE] x bilayers by depositing V[TCNE] x on a molecular seed layer (e.g., copper phthalocyanine, CuPc) and by varying growth conditions. |
Donley Cormode; Robert Claasen; Zoe Phillips; Ezekiel Johnston-Halperin; |
| 151 | Electronic States and Magnetism Driven Quantum Phenomena in Pristine and Ce Substituted Ga2O3 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present structural, electronic, and magnetic properties of the most stable monocline pristine, and Ce substituted β-Ga 2O 3 calculated from density functional theory. |
Yogendra Limbu; Michael Flatté; Durga Paudyal; |
| 152 | Towards Strain-tunning Correlations in Van Der Waals Heterosrtuctures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present a strain study on twisted homobilayers of WSe2 on hexagonal Boron nitride (BN). |
Marshall Campbell; Luis Jauregui; Vigneshwaran Chandrasekaran; Michael Pettes; Sean Doan; |
| 153 | GW-BSE Study on The Interlayer Moiré Excitonic States in Twisted Bilayer WSe2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we investigate the interlayer moiré excitonic states in the twisted bilayer WSe 2 using first-principles GW-BSE calculations. |
Woochang Kim; Mit Naik; Steven Louie; |
| 154 | Interacting Interlayer-moiré-excitons in Twisted WS2/WSe2 Heterobilayer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we create closely spaced moiré traps using a twisted heterobilayer of WS 2/WSe 2 with a twist angle of θ≈59°. |
Suman Chatterjee; Medha Dandu; Pushkar Dasika; Rabindra Biswas; Kenji Watanabe; Takashi Taniguchi; Varun Raghunathan; Kausik Majumdar; |
| 155 | Identification of Moiré Phonons in WSe2/WS2 Van Der Waals Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: 3) The frequency of the satellite peaks shifts with small variations in twist angle. Using density functional theory calculations and geometric arguments, we show that all three of these observations can be explained if we identify these new satellite peaks as zone-folded optical phonon modes from the WSe 2 layer. |
Madeleine Phillips; Hsun-Jen Chuang; Kathleen McCreary; Darshana Wickramaratne; Matthew Rosenberger; Vladimir Oleshko; Mark Lohmann; Dante O’Hara; C Stephen Hellberg; Berend Jonker; |
| 156 | Phason-assisted Interlayer Exciton Diffusion in A WSe2/WS2 Moiré Superlattice Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We observe that the temperature dependent formation of the interlayer exciton is reflected in the overall lifetime and diffusion lengths of exciton species in the WSe2/WS2 heterobilayer. |
Antonio Rossi; Jonas Zipfel; Indrajit Maity; Luca Francaviglia; Monica Lorenzon; Mit Naik; Emma Regan; Daria Blach; Edward Barnard; Kenji Watanabe; Takashi Taniguchi; Eli Rotenberg; feng wang; Steven Louie; Libai Huang; Johannes Lischner; Archana Raja; Alexander Weber-Bargioni; |
| 157 | Nanoscale Patterns at Molecule/MoS2 Heterostructure and Their Effects on The Interlayer Exciton Dynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigated the IX dynamics in heterostructures formed by PTCDI and PTCDA with monolayer (ML) MoS 2. |
Kushal Rijal; Stephanie Amos; Pavel Valencia-Acuna; Fatimah Rudayni; Neno Fuller; |
| 158 | Diverse Nature of Excitonic States in Transition Metal Dichalcogenide Moiré Superlattices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We performed state-of-the-art first-principles GW-Bethe Salpeter equation calculations and discovered a rich diversity of excitonic states in large-area transition metal dichalcogenide moiré superlattices. These studies, which involve thousands of atoms in the reconstructed moiré unit-cell, are made possible by a novel computational approach we developed, the pristine unit-cell matrix projection (PUMP) method [1]. |
Mit Naik; |
| 159 | Electric-field-tunable Type-I to Type-II Band Transition in MoSe2/WS2 Heterobilayer Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: We have measured the electric-field-dependent photoluminescence map of a dual-gate MoSe 2/ WS 2 heterobilayer device encapsulated by boron nitride. At zero electric field, the … |
Ao Shi; Jedediah Kistner-Morris; Erfu Liu; Takashi Taniguchi; Kenji Watanabe; Nathaniel Gabor; Chun Hung Lui; |
| 160 | Bosonic Mott Insulator of Interlayer Excitons in Transition Metal Dichalcogenide Heterostructure Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report the observation of a bosonic Mott insulator in WSe 2/WS 2 moiré superlattices composed of excitons, i.e., tightly bound electron-hole pairs. |
Richen Xiong; Jacob Nie; Samual Brantly; Patrick Heys; Renee Sailus; Kenji Watanabe; Takashi Taniguchi; Sefaattin Tongay; Chenhao Jin; |
| 161 | Observation of Quadrupolar and Dipolar Excitons in A Semiconductor Heterotrilayer Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report the observation of quadrupolar and dipolar excitons in a semiconductor heterotrilayer consisting of stacked, angle-aligned WSe 2/WS 2/WSe 2 monolayers. |
Leo Yu; Kateryna Pistunova; Jenny Hu; Kenji Watanabe; Takashi Taniguchi; Tony Heinz; |
| 162 | Tuning Thermal Transport and Magnetization Dynamics in Functional Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will share our group’s activities in advancing the state-of-the-art ultrafast optical metrology to study the thermal and magnetic properties of functionalized materials spanning a wide range of applications. |
Xiaojia Wang; |
| 163 | Quantum-coherent Enhancement of Nonlinear Thermoelectricity on Nanoscale Heat Engines Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We theoretically investigate how we can improve thermoelectric performance of nanoscale heat engines by controlling quantum coherence, which we can regulate in nanostructures such as by deforming device geometry, making direct channels between environments, or applying gate voltages. |
Nobuhiko Taniguchi; |
| 164 | Generalized Phonon Hydrodynamics in Nanostructured Semiconductors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The microscopic picture of phonon hydrodynamics is usually associated to the abundance of momentum-conserving collisions in 2D materials, such as graphene at low temperatures. Here, I will show that the applicability of the hydrodynamic heat equation is not restricted to this regime, and can be extended to describe boundary effects in 3D semiconductors. |
Albert Beardo; Joshua Knobloch; Lluc Sendra Molins; Brendan McBennett; Emma Nelson; Javier Bafaluy; Juan Camacho; Henry Kapteyn; Margaret Murnane; F. Xavier Alvarez; |
| 165 | Hyperbolic Phonon Polaritons with Positive and Negative Phase Velocities in Suspended Α-MoO3 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we report the alteration of HPPs in biaxial α-phase molybdenum trioxide (α-MoO3) by sample suspension. |
Siyuan Dai; Jialiang Shen; Zhiren Zheng; Thao Dinh; Chuanyu Wang; Mingyuan Chen; Pengyu Chen; Qiong Ma; Pablo Jarillo-Herrero; Lixing Kang; |
| 166 | Understanding Thermal Transport Properties of Transition Metal Dichalcogenides Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a theoretical study of the phonon heat transport properties of bulk and monolayer WS2, WSe2, MoS2 and MoSe2, focusing on the microscopic origins giving rise to the macroscopic thermal conductivity. |
Roberta Farris; Zeila Zanolli; Pablo Ordejon; Matthieu Verstraete; Klaas-Jan Tielrooij; |
| 167 | Dynamics, Hybridization, and Thermalization of Phonons in Optically Excited Twisted TMD Bilayers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we evaluate the role of individual phonons and interfacial twist angle in the interlayer heat transfer. |
Johnathan Georgaras; Felipe da Jornada; |
| 168 | Atomistic Investigation of Phonon Transport Through Nanoparticles Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Specfically, a nanoparticle can be viewed as a combination of two non-planar interfaces that, in addition to reflection and transmission, can induce phonon wave trapping, localization, and lagged dissipation effects. In this work, we apply atomistic phonon wave-packet simulations to uncover these effects with wavevector and mode dependence. |
Theodore Maranets; Yan Wang; |
| 169 | Universal Heat Flow Behavior in Highly-confined Semiconductor Nanosystems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: However, first principles models are too computationally challenging for 3D nanostructured geometries, while mechanistic approaches make overly-simplistic assumptions about the nature of phonon-boundary interactions. Here, we study heat flow in a 3D nanostructured silicon metalattice, using an infrared pump laser to excite the sample and an extreme ultraviolet probe to monitor its relaxation. |
Brendan McBennett; Albert Beardo; Emma Nelson; Charles Bevis; Sadegh Yazdi; Begoña Abad; Travis Frazer; Jorge Nicolas Hernandez Charpak; AMITAVA ADAK; Yuka Esashi; Hiu Cheng; Alex Grede; Pratibha Mahale; Nabila Nova; Noel Giebink; Thomas Mallouk; John Badding; Baowen Li; Henry Kapteyn; Margaret Murnane; Joshua Knobloch; |
| 170 | Molecular Dynamics Study of Phonon Transport in Crystal/aerogel Nanocomposites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Growing demands in alternative energy generation have accelerated efforts to develop efficient thermoelectric materials. Because silicon has a large Seebeck coefficient, is easily doped to be both n-type and p-type, and has high Earth abundance, research has focused on methods for reducing the lattice thermal conductivity of this material through nanostructuring techniques. |
Mitra Sedeeqi; Bruce White; |
| 171 | Negative Interatomic Spring Constant Manifested By Topological Phonon Flat Band Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Surprisingly, we found that topological phonon flat bands (FBs) can manifest either a positive or negative interatomic spring constant that couples the FB-modes of opposite chirality, as exemplified by first-principles calculations of a 2D material of Kagome-BN. |
Bowen Xia; Feng Liu; Hang Liu; |
| 172 | THz Phonon Spectroscopy with Van Der Waals Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We estimated phononic properties such as phonon dissipation rates, reflection coefficients, and interlayer coupling constants between different van der Waals materials. |
Yoseob Yoon; feng wang; |
| 173 | Giant Electron-phonon Coupling and Resistivity Saturation in Nanostructured Hybrid of Noble Metals Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we have demonstrated a novel nanostructuring strategy of Au via the formation of a hybrid with embedded ultra-small Ag nanoparticles (of radius 1 nm) that allowed us to achieve an effective λ as large as 20, which is almost ten times larger than that known for any solid so far. |
SHREYA KUMBHAKAR; Tuhin Maji; Phanindra Sai T; Arindam Ghosh; |
| 174 | Superradiant Single-phonon Emission from A Finite-sized Patch of Two-dimbensional Material Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For an exciton with a coherent spread over a spatial region larger than its own binding radius, its transition dipole moment is enhanced by a factor proportional to the size of the region, a phenomenon known as single photon superradiance. Here we discuss the theoretical upper limit of the transition dipole moment of an exciton confined in a finite-sized patch of 2D material, given that its lowest bright eigenstate have a level spacing of over 4k BT from other eigenstates, sufficient for preserving its single photon nature. |
Shiyuan Gao; |
| 175 | Surface Effects on Anisotropic Photoluminescence in One-Dimensional Halide Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we investigate C 4N 2H 14PbBr 4 by polarization dependent time-averaged and time-resolved PL (TRPL) spectroscopy, as a function of photoexcitation energy. |
Luke McClintock; Long Yuan; Ziyi Song; Michael Pettes; Dmitry Yarotski; Rijan Karkee; David Strubbe; Liang Tan; Azza Ben Akacha; Biwu Ma; Yunshu Shi; Valentin Taufour; Dong Yu; |
| 176 | Anisotropy and Exciton Self-trapping in The 1D Perovskite C4N2H14PbBr4 from First Principles Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We study a 1D perovskite of formula C 4N 2H 14PbBr 4, consisting of PbBr chains separated by organic cations. |
Rijan Karkee; David Strubbe; |
| 177 | A 2D Lead Halide Hybrid System with The Lowest Bandgap and Exciton Binding Energy Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Despite the rapid developments of hybrid lead halide perovskites as light harvesters and hole-transport materials, the inadequate environmental stability of these materials … |
Debasmita Pariari; Sakshi Mehta; Sayak Mandal; Arup Mahata; Titas Pramanik; Sujit Kamilya; Trupthi Chonamada; Arya Vidhan; Pralay Santra; Shaibal Sarkar; Filippo De Angelis; Abhishake Mondal; Dipankar Das Sarma; |
| 178 | Charge Transfer in Organo-metallic Halide Perovskite Thin Film/Quantum Dot Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigated charge transfer mechanisms between spin-coated methylammonium lead iodide (MAPI) thin films and PQDs. |
Jorge Arteaga; William Delmas; Melissa Guarino-Hotz; Jin Zhang; Sayantani Ghosh; |
| 179 | Density Functional Theory Treatment of Site-Disordered Silver Iodo-Bismuthate Semiconductors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this study, we use a cluster expansion description of the total energy and a simulated annealing minimization routine to determine low-energy structures of the NaVO 2-like Ag-Bi-I materials. |
Victor Barone; Blair Tuttle; |
| 180 | Amplified Spontaneous Emission in Facet Engineered Metal Halide Perovskite Nanocrystals Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For instance, we demonstrate a two-fold reduction in Auger recombination rates and thermalization time with increased number of facets. |
Santu Bera; Suman Bera; Narayan Pradhan; K. V. Adarsh; |
| 181 | Circular and Linear Polarized Reflectivity of Intra-plane and Inter-plane Excitons in 2D Phenethylammonium Lead Iodide Single Crystal Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we measure polarized photoluminescence and reflectivity and CPGE of 2D-PEPI single crystal and confirm that the free exciton is in the MQW plane, whereas the bound exciton possesses an out-of-plane dipole moment. |
Xiaomei Jiang; |
| 182 | Electro-Absorption Spectroscopy of Hybrid Organic-Inorganic Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The method of Electro Absorption (EA) related to the third-order nonlinear optical susceptibility allows probing electronic states of semiconductors better than linear absorption since it is a modulation technique. Using the EA spectroscopy in two-dimensional (2D)- and three-dimensional (3D)-hybrid organic-inorganic perovskites (HOIP) at various temperatures, we obtained the optical band gap, the 1s exciton energy, and the exciton binding energy (Eb) in these materials. |
Heshan Hewa Walpitage; Dipak Khanal; Zeev Vardeny; |
| 183 | Studying The Effect of Solvent Interactions in Fabricating High Purity 2D Perovskites for Optoelectronic Applications Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this study, we investigate the influence of solvent dielectric constant, donor number, and Hansen parameter to predict interactions between 2D perovskite precursors/crystals and the solvent. |
Mohammad Hossein Khalili Samani; Siraj Sidhik; Amanda Marciel; Aditya Mohite; Shahryar Ramezani Bajgiran; |
| 184 | Revealing Electronic Properties in Template-Grown Perovskite CsPbBr3 Nanorods Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We develop a general and vibrant bottlebrush-like block copolymer nanoreactor platform to craft a library of one-dimensional (1D) all-inorganic perovskite CsPbBr 3 nanorods (NRs) [1]. |
Yize Stephanie Li; Eduardo Avila-Lopez; Shuang Liang; Isaac Elias; Zhiqun Lin; |
| 185 | Rationally-Designed Organic Ligands for Water-Proofed 2D Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Two-dimensional (2D) halide perovskites have attracted considerable attention as semiconducting materials due to their broader design space of organic ligands compared to their 3D … |
Zih-Yu Lin; Stephen Shiring; Yao Gao; Letian Dou; Brett Savoie; |
| 186 | Biexcitons in Lead Halide Perovskite Nanocrystals Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using quasiparticle-based path integral molecular dynamics within the effective mass approximation, we have studied the interplay of anharmonic lattice degrees of freedom, dielectric confinement, and electronic correlation to understand the multiparticle excitations over a range of nanoparticle sizes. |
Yoonjae Park; David Limmer; |
| 187 | Topological Superconductivity By Phase Tuning Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce a scheme in which a systematic manipulation of the phases of three superconducting pads tunes the system into a topological state. |
Yuval Oreg; |
| 188 | DFT Calculations for Singlet and Triplet Superconductivity Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We provide further proof that exchange interaction, and hence the associated Tc, depends on the applied pressure on FeTe 0.5Se 0.5. |
Chih-Kai Yang; |
| 189 | Majorana Corner Modes in Three-dimensional Transition Metal Dichalcogenides Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This recipe is obtained from a set of strong, weak, and mixed symmetry indicators we derived in the presence of inversion symmetry. Following this recipe, we propose that centrosymmetric MoTe2, which was found superconducting experimentally, is a higher-order Tsc. |
Yi-Ting Hsu; Kyungwha Park; Sheng-Jie Huang; |
| 190 | Identifying True Majorana Zero Modes Through Their Non-Abelian Statistics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we numerically investigate the parameter space of the Kitaev model and find regions where the hybridization energy between the Majorana modes, detrimental, e.g., to qubit operations, is zero even in the presence of moderate disorder. |
Poliana Penteado; Rodrigo Dourado; J. Carlos Egues; J. Carlos Egues; |
| 191 | Topological Superconductivity From Forward Phonon Scatterings Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present a new mechanism to attain topological superconductivity via forward phonon scatterings. |
Shaozhi Li; |
| 192 | Can Caroli-de Gennes-Matricon and Majorana Vortex States Be Distinguished in The Presence of Impurities? Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we show that a local impurity potential can push CdGM states to zero energy. |
Bruna S. de Mendonça; Antonio Manesco; Nancy Sandler; Luis Dias Da Silva; |
| 193 | Majorana Braiding Without An Exponential Hilbert Space Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a method to calculate expectation values, <ψ(t)|Â|ψ(t)>, and overlaps of time evolved many-body states from single-particle states in a superconductor. |
Eric Mascot; Themba Hodge; Daniel Crawford; Jasmin Bedow; Dirk Morr; Stephan Rachel; |
| 194 | Signatures of Parafermionic Modes in Superconductor-fractional Quantum Hall Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk I will propose setups, based on recent experiments, that allow for readout of the topologically protected charge shared by a pair of isolated parafermions. |
Ida Nielsen; Karsten Flensberg; Reinhold Egger; Michele Burrello; |
| 195 | A Quantitative Theory of Yu-Shiba-Rusinov States of Magnetic Atomic Structures on Different Superconducting Substrates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We performed calculations for different s-wave superconductors (Nb, Ta, Pb), covered by different overlayers (Au, Ir, Pt, Bi) hosting different magnetic impurities (Mn, Fe, Co, Cr). |
Bendegúz Nyári; Andras Laszloffy; Kyungwha Park; Nóra Kucska; Laszlo Szunyogh; Balazs Ujfalussy; |
| 196 | Effects of Disorder in Planar Topological Josephson Junctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate reentrant behavior of topological properties on planar Josephson junctions and conclude that an intermediate disorder may be beneficial to establishing topological phases [4-6]. |
Baris Pekerten; Tong Zhou; Jong Han; Alex Matos-Abiague; Javad Shabani; Igor Zutic; |
| 197 | Chiral Majoranas Morphing Into Corner States in Ordinary QAH/SC Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we investigate the spectrum and linear conductance G of a square-shaped quantum anomalous Hall (QAH) insulator in proximity to an ordinary s-wave superconductor (SC) via exact diagonalization and non-equilibrium Green functions. |
Lucas Pupim; Matthew Gilbert; J. Carlos Egues; |
| 198 | Fractional Transconductance in A Chain of Josephson Junctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we theoretically demonstrate how a fractional quantized transconductance can be observed in a chain of Josephson junctions. |
Hannes Weisbrich; Raffael Klees; Oded Zilberberg; Wolfgang Belzig; |
| 199 | Nodal Higher-order Topological Superconductivity from A $mathcal{C}_4$-symmetric Dirac Semimetal Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: We analyze the topological properties of the possible superconducting states emerging from a Cd$_3$As$_2$-like, $mathcal{C}_4$-symmetric Dirac semimetal, with two four-fold … |
Zhenfei Wu; Yuxuan Wang; |
| 200 | Tuning of Anomalous Hall Effect By Spin Reorientation in A Novel Altermagnetic Compound CrSb Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Consideration of the spin group symmetry reveals that CrSb belongs to a particular symmetry class adherent to this novel magnetic phase. In this talk, we will report density functional calculation of the Anomalous Hall conductivity (AHC) in CrSb, as a function of the collinear spin orientation in this material. |
Suvadip Das; Igor Mazin; |
| 201 | Magneto Transport and Electronic Properties of Altermagnetic MnTe Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we will present the magnetotransport properties measured on the bulk single crystal of MnTe and discuss the results with respect to the calculated electronic band structure. |
Resham Regmi; Hari Bhandari; Peter Siegfried; Igor Mazin; Nirmal Ghimire; |
| 202 | CDW Induced Structural Symmetry Breaking in Kagome Metal FeGe Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Charge-ordered phases in kagome metals have garnered much recent attention owing to their highly interesting properties. Recently, CDW order within the antiferromagnetic (AFM) … |
Liran Wang; Frederic Hardy; Christoph Meingast; Xueliang Wu; Mingquan He; Yisheng Chai; Aifeng Wang; |
| 203 | Buffer Layered Growth of Nickeline and Zinc-blende MnTe on C-plane Al2O3 Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: MnTe is a well-known polymorphic semiconductor with nickeline, zinc blende and wurtzite being its most widely studied phases. While nickeline MnTe has found application in dilute … |
Deepti Jain; Hee Taek Yi; Matthew Brahlek; Myung-Geun Han; Seongshik Oh; |
| 204 | Global Ferromagnetism and Localized Dimers in (Sn0.9Mn0.1)Te Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Analysis of the short-range correlations reveals competing pairwise magnetic interactions from nearest-neighbor FM Mn-Mn direct interactions, next-nearest neighbor antiferromagnetic (AFM) Mn-Te-Mn super-exchange interactions, and longer-range AFM Mn-Te-Sn-Te-Mn interactions. |
FARHAN ISLAM; Santanu Pakhira; Deborah L. Schlagel; Daniel Pajerowski; Thomas Heitmann; David Johnston; Robert McQueeney; David Vaknin; |
| 205 | Engineering Magnetic Transition Metal Chalcogenide-based Quantum Interfaces Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We highlight here two typical TMC family of materials, namely, ferromagnetic chromium telluride and antiferromagnetic manganese telluride. |
Hang Chi; |
| 206 | Topological Magneto-electric Response in Non-magnetic and Anti-ferromagnetic Topological Insulators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we consider the magneto-electric response of non-magnetic and anti-ferromagnetic multilayer crystals. |
Perry Mahon; Chao Lei; Allan MacDonald; |
| 207 | Nonlinear Hall Effect Induced By Anomalous Skew Scattering in PT-symmetric Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: ASN grows with increasing relaxation time, and it diverges in the clean limit. Strikingly, we find that ASN supports a helicity dependent photocurrent even in a PT symmetric metal in contrast to all other metallic second order nonlinear photocurrents that are insensitive to helicity: this enables means to directly isolate ASN. |
Da Ma; Arpit Arora; Giovanni Vignale; Justin Song; |
| 208 | Graphene Induced Colossal Magnetoresistance and Critical Behavior in Phase Segregated Iron Oxide Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Interfacial magnetic and electronic properties in two-dimensional systems placed in proximity with magnetic substrates have been shown to exhibit exotic interfacial phenomena … |
Noah Schulz; Amit Chanda; Derick Detellem; Chang-Ming Hung; Humberto Gutierrez; Manh-Huong Phan; Hariharan Srikanth; Gopal Datt; Tapati Sarkar; M. Venkata Kamalakar; |
| 209 | Field-independent Transverse Thermal Hall Behavior in Antiferromagnet YbMnBi2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report measurements of thermal Hall effect with heat flux applied along [1-10] direction, magnetic field along [110] direction, and measured transverse transport signals along [001] direction. |
Jiamin Wen; Kaustuv Manna; Yu Pan; Claudia Felser; Joseph Heremans; |
| 210 | Significant Composition Dependence of The Anomalous Hall Effect in The Metallic Triangular Lattice Antiferromagnet Co1/3TaS2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This presentation reports that metallic triangular antiferromagnet Co 1/3TaS 2 exhibits a substantial anomalous Hall effect (AHE) tunable by cobalt composition. |
Pyeongjae Park; Chaebin Kim; Yeochan An; Yoon-Gu Kang; Maxim Avdeev; Romain Sibille; Kazuki Iida; Ryoichi Kajimoto; Ki Hoon Lee; Han-Jin Noh; Myung Joon Han; Cristian Batista; Je-Geun Park; |
| 211 | An Investigation of The Magnetoelectric Monopole Response in Chromia Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate that random distribution of ME grains alone does not warrant isotropic ME response because the activation of a non-vanishing ME response requires a ME field cooling protocol which tends to induce preferred axes. |
Syed Qamar Abbas Shah; Ather Mahmood; Arun Parthasarathy; Allan MacDonald; Christian Binek; |
| 212 | Nontrivial Triplet Band-topology in The Spin Gap Materials, KCuCl3 and TlCuCl3 (Part 1) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate the spin gap system, XCuCl 3 ( X=K, Tl), where the magnetic copper ions form a 3-dimensional lattice of two inequivalent dimers. |
Charles Walker; Matthew Stern; Judit Romhanyi; |
| 213 | Nontrivial Triplet Band-topology in The Spin Gap Materials, KCuCl3 and TlCuCl3 (Part 2) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We investigate the spin gap system, XCuCl3 ( X=K, Tl), where the magnetic copper ions form a 3D lattice of two inequivalent dimers. |
Matthew Stern; Charles Walker; Judit Romhanyi; |
| 214 | Structural and Magnetic Properties of EuIr3Si7 Single Crystals Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will present the physical properties of a new member, the EuIr 3Si 7 single crystal, of the RT 3 M 7 family. |
Binod Rai; Boris Maiorov; Alex Bretana; Joseph Paddison; Stuart Calder; Matthias Frontzek; Christopher Mizzi; |
| 215 | Broken-symmetry States and Valley Ordering in Twisted Bilayer Graphene/WSe2 Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we have explored various facets of many-body correlations using a combination of magneto-transport and thermoelectric measurements in tBLG coupled to a layer of tungsten diselenide (WSe 2). |
U Chandni; |
| 216 | Twist-angle Dependent Proximity Induced Spin-orbit Coupling in Graphene/transition-metal Dichalcogenide and Graphene/topological Insulator Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We establish that for biaxially strained graphene the band offsets between the Dirac point and the substrate bands vary linearly with strain, regardless of the twist angle. |
Thomas Naimer; Klaus Zollner; Martin Gmitra; Jaroslav Fabian; |
| 217 | Twist Angle-Dependent Spin-Orbit Proximity Effects and Charge-to-Spin Conversion in Graphene/WSe2 Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our findings offer a new perspective on the spintronics of graphene/WSe 2 systems, opening up opportunities for efficient control of CSC in Van der Waals heterostructures. |
Seungjun Lee; D. J. P. de Sousa; Young-Kyun Kwon; Fernando de Juan; Zhendong Chi; Felix Casanova; Tony Low; |
| 218 | Ferroelectric Switching at Symmetry-broken Interfaces By Local Control of Dislocation Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, local control of ferroelectric domains in a marginally twisted WS 2 bilayer is demonstrated with a scanning tunneling microscope at room temperature, and their observed reversible evolution understood using a string-like model of the domain wall network. |
Laurent Molino; Leena Aggarwal; Vladimir Enaldiev; Ryan Plumadore; Vladimir Falko; Adina Luican-Mayer; |
| 219 | Evidence for Spatially Separated Flat Bands in A Graphene Double Moiré System Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We observe clear resistance maxima when the top and bottom moiré bands are at charge neutrality and full-filling of the moiré Brillouin zone, controlled largely by the top and bottom gates, respectively. |
Yimeng Wang; G Burg; Kenji Watanabe; Takashi Taniguchi; Emanuel Tutuc; |
| 220 | Tunable Layer-contrasting Electronic Structure in A Graphene Moiré Lattice Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We identify an interesting asymmetric moiré system consisting of graphene only, by creating distinct moiré potentials on different layers of graphene. |
Xueqiao Wang; Zhiren Zheng; Ziyan Zhu; Stephen Carr; Kenji Watanabe; Takashi Taniguchi; Efthimios Kaxiras; Qiong Ma; Pablo Jarillo-Herrero; |
| 221 | Tunable Energy Gap and The Transitions Between The Insulating Phases in Dual-gated HBN/bilayer Graphene Superlattices at The Charge Neutrality Point Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report on the transport properties in hexagonal boron nitride (hBN)/bilayer graphene (BLG) moiré superlattice devices with top and bottom gates (dual gate) enabling individual modulation of the electric displacement field and the carrier density. |
Takuya Iwasaki; Yoshifumi Morita; Kenji Watanabe; Takashi Taniguchi; |
| 222 | Mapping The Density of States in Twisted Trilayer Graphene Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To explore the effects of the additional third layer we map the band structure for various twist angles in several different devices. Using scanning tunneling microscopy and spectroscopy at 4.5 K we obtain local density of states maps and dI/dV curves for these devices. |
Rachel Nieken; Takashi Taniguchi; Kenji Watanabe; John Schaibley; Brian LeRoy; |
| 223 | Phonon-limited Resistivity of Multilayer Graphene Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We calculate the theoretical contribution to the doping and temperature ($T$) dependence of electrical resistivity due to scattering by acoustic phonons in Bernal bilayer graphene (BBG) and rhombohedral trilayer graphene (RTG), as well as in twisted bilayer graphene (TBLG) near the magic angle. |
Seth Davis; |
| 224 | Strong Gate-tunability of Flat Bands in Multilayer Graphene Due to Moiré Encapsulation Between HBN Monolayers Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: On the other hand, gating can broadly tune the gap at the principal Dirac point, and may thereby strongly compress the first moiré mini-band in width against the moiré-induced gap at the secondary Dirac point. We reveal that in hBN-encapsulated bilayer graphene this novel mechanism can lead to bands flatter than 10 meV under moderate gating, hence presenting a convenient pathway towards electronically-controlled strongly-correlated states on demand. |
Robin Smeyers; Milorad Milosevic; Lucian Covaci; |
| 225 | Correlated States and Anomalous Transport in Twisted MoTe2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a magnetotransport study of twisted MoTe2 with a twist angle range of 3.2-4.8 degrees. |
Jiaqi Cai; Eric Anderson; William Holtzmann; Feng-ren Fan; Takashi Taniguchi; Kenji Watanabe; Wang Yao; Xiaodong Xu; |
| 226 | Spatial and Spectral Signatures of Intralayer Moiré Excitons in Layered Superlattices Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this study, we demonstrate spatially and spectrally resolved signatures of distinct intralayer moire excitons by employing monochromated electron energy loss spectroscopy (EELS) on prototypes of closely aligned WS 2/WSe 2 stacks. |
Medha Dandu; Jordan Hachtel; Mit Naik; Patrick Hays; Sriram Sankar; Elyse Barre; Takashi Taniguchi; Kenji Watanabe; Steven Louie; Felipe da Jornada; Sefaatin Tongay; Peter Ercius; Archana Raja; Sandhya Susarla; |
| 227 | Theoretical Study of The Pauli Violation Ratio in Magic-angle Twisted Multilayer Graphene Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Motivated by recent experimental studies on magic-angle twisted multilayer graphene [Park et al. Nature Materials 21, 877, 2022] who observed robust superconductivity with a critical magnetic field in excess of the Pauli limit, in this theoretical work we calculate how the upper bound on the Pauli violation ratio (i.e. the ratio between the critical magnetic field and the Pauli limit value) in this system depends on atomic relaxation, disorder and spontaneous emergence of ferroelectricity. |
Darryl Foo; Mohammed Alezzi; Giovanni Vignale; Shaffique Adam; |
| 228 | Temperature Dependent Electronic Structure of Cr1/4NbSe2 Thin Films Revealed By Angle-resolved Photoemission Spectroscopy Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Intercalation of 3 d transition metal atoms in transition metal dichalcogenides is known to produce magnetic phases with varied spin structures. Particularly, 3 d-intercalated Nb … |
Satoshi Hamao; Bruno Saika; Xiang Huang; Yuki Majima; Hideki Matsuoka; Miho Kitamura; Masato Sakano; Takuya Nomoto; Motoaki Hirayama; Koji Horiba; Hiroshi Kumigashira; Ryotaro Arita; Yoshihiro Iwasa; Masaki Nakano; Kyoko Ishizaka; |
| 229 | Role of Apical Ions in The CDW Phases of AV3Sb5 Kagome Metals Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, using first principles calculations, we show that the apical Sb ions are essential in determining the energy scale of the CDW phases. |
Turan Birol; Fan Yang; Rafael Fernandes; Ethan Ritz; |
| 230 | Tunable Magnetism in 1T-CrTe2 Due to Competing Charge and Spin Density Waves Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we applied density functional theory to investigate the lattice dynamics, electronic and magnetic properties of monolayer 1T-CrTe 2 in both magnetic orderings as well as their dependences on lattice parameters. |
Ahmed Elrashidy; Jia-An Yan; |
| 231 | In-operando Magneto-Raman Spectroscopy of 2D Materials: Graphene and 2M-WS2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We highlight the measurement capabilities of our custom-built magneto-Raman spectrometer with simultaneous electrical measurement, focusing on two different devices. |
Son Le; Tehseen Adel; Maria Munoz; Piumi Samarawickrama; Joseph McBride; John Ackerman; Brian Leonard; Jifa Tian; Angela Hight Walker; |
| 232 | Evidences for The Exciton Gas Phase and Its Condensation in Monolayer 1T-ZrTe2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report a distinct correlated phase beyond the 2×2 CDW ground state emerging in epitaxially grown monolayer 1T-ZrTe2 and its investigation by angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling microscopy (STM). |
Chunjing Jia; Thomas Devereaux; Jonathan Sobota; Patrick Kirchmann; Sung-Kwan Mo; Zhi-Xun Shen; Shujie Tang; |
| 233 | Lattice Distortions in The Gyrotropic Semimetal 1T-TiSe2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will discuss on our measurements of the phonon modes using Raman spectroscopy and inelastic x-ray scattering. |
Kwangrae Kim; Hyunwoo Kim; BJ Kim; |
| 234 | Doping-induced Nematic Charge Density Wave in 1T-TiSe2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: While the generally accepted charge density wave respects the threefold symmetry of the lattice, some experiments display signatures of the breaking of this symmetry. We propose that these seemingly contradictory observations can be rationalized by a nematic charge density wave state induced by electron doping, which arises due to the competition between two order parameters. |
Daniel Muñoz-Segovia; Jörn Venderbos; Adolfo Grushin; Fernando de Juan; |
| 235 | Dynamic Stability and Magnetism of David Star Charge Density Waves in Transition Metal Dichalcogenide Systems Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present ab initio calculations based on the density functional theory of different V-, Nb-, and Ta-based chalcogenides. |
Jan Phillips; Adolfo Fumega; Victor Pardo; |
| 236 | Symmetry of Real and Imaginary Charge Density Waves in AV3Sb5 Kagome Metals Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using group and representation theoretical approaches, we classify the various symmetry-allowed phases of the AV 3Sb 5 family in which both rCDW and iCDW order parameters condense. |
Ethan Ritz; Rafael Fernandes; Turan Birol; |
| 237 | Isotropic Strain Effects on Twisted Bilayer Graphene Near The Magic Angle Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Applying this technique to twisted bilayer graphene samples away from the magic angle, we are able to tune the Hofstadter butterfly of the system with strain. |
Dinesh Yadav; Chuankun Liu; Jasper Bradford; Kenji Watanabe; Takashi Taniguchi; Vikram Deshpande; |
| 238 | Chromium Substitution Suppresses The Charge Density Wave in ScV6Sn6 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Temperature dependent physical properties reveal that chromium substitution suppresses the CDW. I will discuss the how this observation sheds light on the factors which govern CDW formation in kagome metals. |
Charles Young; William Meier; Shirin Mozaffari; Richa Madhogaria; David Mandrus; |
| 239 | Magneto-Skyrmion Excitations of Bilayer Electron-hole Fluids Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk we will discuss the influence of strong perpendicular magnetic fields on bilayer electron-hole fluids. |
Bo Zou; Allan MacDonald; |
| 240 | Exciton Localization and Transport in Van Der Waals HeterostructuresXiaoqin Li Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: At the excitation density well exceeding the Mott density, we find a surprisingly rapid initial expansion of hot plasma to a few microns away from the excitation source within 0.2 ps. |
Xiaoqin Elaine Li; |
| 241 | Counterflow Conductivity and Quantum Geometry in Excitonic Condensates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Motivated by recent experiments in TMDs, we focus on inter-layer excitons and investigate the effects of particle-hole asymmetry and quantum geometry on the condensate within a mean-field framework. We make connections between phase stiffness, Coulomb drag and counterflow conductivity, and highlight how they are enhanced by the quantum geometry of Bloch wavefunctions. |
Nishchhal Verma; Daniele Guerci; Raquel Queiroz; |
| 242 | Contact Electrification of Two-Dimensional Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present an extension of the work to include charge transfer between normal and/or topological materials in one and two dimensions in order to assess the relevance of using two-dimensional materials in the design of TENGs. |
Lok Lew Yan Voon; Amanda Basant; Morten Willatzen; Zhong-Lin Wang; |
| 243 | Exciton Transport on A Polaritonic Quantum Wire Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we provide extensive numerical simulations of wave packet evolution on polaritonic wires. |
Gustavo Aroeira; Raphael Ribeiro; |
| 244 | Impact of Free Carriers on Exciton and Trion Diffusion in Monolayer WSe2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The impact of the exciton-electron interaction in the context of exciton propagation, however, remains unclear, while there is increasingly mounting evidence of mobile composite exciton-carrier states, known as trions and Fermi polarons. Here we address this question in a controlled experimental scenario and demonstrate diffusion of excitons in the presence of a continuously tunable Fermi sea. |
Marzia Cuccu; |
| 245 | Exciton Ground State Bleaching in (6,5) Single Walled Carbon Nanotubes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We explore a wide range of initial conditions and determine the dependency of the absorption spectrum as a function of the exciton and phonon populations. |
Stefano Dal Forno; Marco Battiato; |
| 246 | Temperature-dependent Photoresponse and Transport Properties of Silicon MoS2 Van Der Waals Heterostructure Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The study shows that for a particular dielectric, the enhancement is more prominent towards low temperatures. |
VRINDA NARAYANAN P; Atikur Rahman; Gokul M.A; Manisha Rajput; |
| 247 | Ballistic Transverse Magnetic Focusing in Monolayer Graphene on WSe2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we employ the transverse magnetic focusing technique to probe the effects of the SOC on the Fermi surface profile and electron dynamics in monolayer graphene-TMDC heterostructure. |
Qing Rao; Wun-Hao Kang; Hongxia Xue; Kenji Watanabe; Takashi Taniguchi; Ming-Hao Liu; Dong-Keun Ki; |
| 248 | Extreme Doping of Graphene Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we demonstrate that the large work function narrow-band Mott insulator RuCl3 enables modulation doping of exfoliated graphene. |
Yiping Wang; |
| 249 | Mobile Interlayer Excitons at The Mott Transition in Moiré-free Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using ultrafast microscopy, we show that the interlayer excitons propagate freely even at cryogenic temperatures and low densities. |
Edith Wietek; Mikhail Glazov; Matthias Florian; Takashi Taniguchi; Kenji Watanabe; Alexander Steinhoff; Alexey Chernikov; |
| 250 | Strong Plasmon-exciton Coupling Probed Through Electroluminescence and Polarization Control Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we investigate the formation of plasmon-exciton polaritons in hybrid structures consisting of a two-dimensional transition-metal dichalcogenide (TMDC) transferred onto a plasmonic metal tunnel junction. |
Yunxuan Zhu; Jiawei Yang; Jaime Abad Arredondo; Antonio Fernández Domínguez; Francisco José García-Vidal; Douglas Natelson; |
| 251 | Electron Optics and Valley Hall Effect in Undulated Graphene Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Graphene offers a unique opportunity as its strain gradients produce pseudo-electromagnetic fields to guide its electron motion. Based on this concept, we demonstrate the use of substrate topography to impart desirable strain patterns on graphene to induce useful pseudo-EM fields. |
Henry Yu; |
| 252 | Investigation of Polymer Controlled Solution Grown Single Crystal Organic-inorganic Hybrid Perovskites for Gamma Detection Applications Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report a high-quality single crystal organic-inorganic hybrid perovskites (ScOIHP) grown through a polymer-controlled solution method. |
Kaleab Ayalew; Jaeyun Moon; shea tonkinson; Maya Narayanan Kutty; Adam Hecht; Ganesh Balakrishnan; Alexander Barzilov; |
| 253 | Impact of Lattice Distortions on Unusual Bandgap Shift in Organic-inorganic Lead and Mixed-lead-tin Halide Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our study sheds new light on the thermal effects on the band structures of hybrid perovskites. |
Zhixuan Bi; Haochen Zhang; Zehua Zhai; Meng Ye; Han Gao; Hairen Tan; Yong Xu; Luyi Yang; |
| 254 | Temperature-Dependent Phase Stable Hybrid Halide Perovskite Films By Chemical Vapor Deposition Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Methylammonium lead iodide (MAPbI 3–xCl x) thin films were synthesized using chemical vapor deposition. Temperature-dependent grazing incidence synchrotron-based X-ray diffraction … |
Randy Burns; Christopher Arendse; Suchismita Guha; Stephen Klue; Evguenia Karapetrova; Siphelo Ngqoloda; |
| 255 | Effects of 10-Month Low Earth Orbit Exposure on Hybrid Perovskite Thin Film Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we examine the effects of low earth orbit (LEO) on a MHP sample via optical characterization. |
Samuel Erickson; William Delmas; Calista Lum; Jorge Arteaga; Kyle Crowley; Lyndsey McMillon-Brown; Timothy Peshek; Sayantani Ghosh; |
| 256 | Synthesis of Inorganic Metal Halide Perovskite for Radiation Detectors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The inorganic wide-bandgap perovskites such as CsPbBr 3 (CBP) are promising for the crystal design with homogeneous nucleation using Bridgman method. |
Charles Han; shea tonkinson; Maya Narayanan Kutty; Adam Hecht; Ganesh Balakrishnan; Alexander Barzilov; |
| 257 | Rotor Lattice Model of Ferroelectric Large Polarons Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we develop a one-dimensional rotor lattice model of charge carrier-transport, which provides an intuitive physical mechanism for the recently proposed formation of a large polaron at the ferroelectric domain boundaries of lead halide perovskites [1–3]. |
Georgios Koutentakis; Areg Ghazaryan; Mikhail Lemeshko; |
| 258 | Diffuse Neutron and X-Ray Scattering from Inorganic Halide Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Halide perovskites have enjoyed significant attention over the past several years due to their intriguing optoelectronic properties, both in hybrid organic-inorganic and pure … |
Matthew Krogstad; Alex Rettie; Stephan Rosenkranz; Duck Young Chung; Mercouri Kanatzidis; Feng Ye; Yaohua Liu; Jinsong Huang; Haotong Wei; Xing He; Tyson Lanigan-Atkins; Olivier Delaire; Raymond Osborn; |
| 259 | Strongly Anharmonic Phonons in All Inorganic Halide Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We used inelastic neutron scattering, diffuse neutron and x-ray scattering, and first-principles simulations to investigate the strong phonon anharmonicity, 2D correlated fluctuation dynamics, and phase transitions of CsMX 3 systems. |
Chengjie Mao; |
| 260 | Ab Initio Molecular Dynamics Calculations of Threshold Displacement Energies in Halide Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Ab initio molecular dynamics (AIMD) simulations have been performed for different halide perovskites to investigate their response to low-energy radiation. The threshold … |
Rosty Martinez Duque; Ian Sellers; Ahmed Kirmani; Mario Borunda; |
| 261 | Magneto-Optical Properties of Methylammonium Lead Iodide Perovskite Thin Films in The Orthorhombic Domain Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work reports magneto-photoluminescence (MPL) and magneto-Raman (MR) measurements of methylammonium lead iodide CH 3NH 3PbI 3 (MAPbI 3) ~ 280 nm thin film materials at low temperatures (<60 K), where the crystalline structure is in the orthorhombic domain. We obtained different MPL spectra from random spots on the sample surface and fitted them with gaussian curves at 55 K and 1.6 K. |
Maria Munoz; Angela Hight Walker; He Wang; Xinwen Zhang; |
| 262 | Manipulation of Chirality Dependent Nonlinear Optical Effect in 2D Halide Perovskite Under Light-matter Strong Coupling Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this paper, we investigate the CDSHG in isotropic chiral polycrystalline perovskite thin film to study the effect of chirality itself. |
DAICHI OKADA; Fumito Araoka; |
| 263 | Strong Coupling of Carriers to Acoustic Phonons in Bismuth Perovskite Cs3Bi2I9 Revealed By Optical Transient Reflectivity and Ultrafast Electron Diffraction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we present the electronic and structural dynamics of bismuth-based perovskite Cs 3Bi 2I 9. |
Ding-Shyue Yang; Xing He; |
| 264 | Temperature Dependent Angle-resolved Photoemission and X-ray Diffraction of CsPbBr3 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate weak orthorhombic features in the band structure at 300 K which become very pronounced at low temperature, including an extra valence band maximum at Γ. |
Oliver Rader; Maryam Sajedi; Maxim Krivenkov; Dmitry Marchenko; Jaime Sánchez-Barriga; Andrei Varykhalov; Daniel Toebbens; Thomas Unold; Saleem Khan; Ján Minár; |
| 265 | High Magnetic Field Spectroscopy of 2D Hybrid Organic Inorganic Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have studied films of two-dimensional (2D) hybrid organic inorganic perovskites (2D-HOIP) using magneto-circular-dichroism (MCD), magneto-electro-absorption (MEA) and field-induced circularly polarized (FICPO) emission at high magnetic fields (up to 25 Tesla) at liquid-He temperature. |
Daniel Nikiforov; Heshan Hewawalpitage; Valy Vardeny; |
| 266 | Superconducting Proximity Effect in Topological Dirac Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In the last few years, our research has demonstrated the possibility of realizing the topological superconductivity in engineered 3D topological insulators [1], 3D Dirac semimetals [2,3], and their 1D hinge states. |
Chuan Li; Alexander Brinkman; Anqi Wang; Caizhen Li; Dapeng Yu; Zhimin Liao; Peter Schüffelgen; Daniel Rosenbach; Alexander Golubov; |
| 267 | Measuring Induced Gap of InAs/NbTiN Using Quantum Point Contacts in Integer Quantum Hall Regime Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We introduce NbTiN-InAs in a strong magnetic field as a potential candidate platform to realize non-Abelian anyons, and study the gap induced via the proximity effect, in strong magnetic fields. |
Mehdi Hatefipour; Ashley Argueta; William Strickland; Ido Levy; Enrico Rossi; Javad Shabani; |
| 268 | Data-driven Identification of Connate Topological Superconductor Candidates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present a data-driven approach to compile a catalog of potential connate topological superconductor materials, starting with experimentally-confirmed superconductors and cross-referencing their topological nature via high-throughput computational data. |
Aurland Hay; Ram Seshadri; |
| 269 | Monolayer WTe2 Superconductivity from Repulsive Interactions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We show that the desired p-wave state arises naturally as a consequence of the Kohn-Luttinger mechanism. |
Ammar Jahin; |
| 270 | Understanding Disorder in InAs Quantum Wells on Metamorphic III-V Buffer Layers for Topological Josephson Junction Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we present the study of the structural properties of InAs quantum well – Al superconducting layer heterostructures grown by molecular beam epitaxy. |
Ido Levy; William Strickland; Mehdi Hatefipour; Ashley Argueta; Lukas Baker; Melissa Mikalsen; Dylan Langone; Mohammad Farzaneh; Javad Shabani; |
| 271 | Α- and Β-phases of Sn Thin Films Grown on GaSb(001) Surface By Molecular Beam Epitaxy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: This work highlights a strong connection among novel electronic phases and structure metastability that is critical for controlling the topological and superconducting nature of Sn. |
Anjali Rathore; Pradip Adhikari; Chandima Edirishinghe; Gyehyeon Kim; Hyoungtaek Lee; Rachel Woodrum; Sinchul Yeom; Hyeong-Ryeol Park; Changhee Sohn; Benjamin Lawrie; Mina Yoon; Matthew Brahlek; Joon Sue Lee; |
| 272 | Superconducting Properties of Ta3Sb and Ti3Sb, A15 Compounds Which Are Candidate Topological Superconductors Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a study of the superconducting properties of polycrystalline Ti 3Sb (T c ~ 5.9 K) and Ta 3Sb (T c ~ 0.67 K), candidate topological superconductors of the A15 family. |
Matthew Smylie; Ramakanta Chapai; Andreas Rydh; Jared Dans; Hendrik Hebbeker; Duck Young Chung; Hong Zheng; Alexei Koshelev; John Pearson; Wai-Kwong Kwok; John Mitchell; Ulrich Welp; |
| 273 | Probing for Topological Signatures in Phase-controlled Multiterminal Josephson Junctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report on the fabrication and measurement of 3 terminal diffusive and ballistic devices, using a sample design that permits us to vary the two distinct phases independently. |
Maxwell Wisne; Venkat Chandrasekhar; Pertti Hakonen; Ilari Lilja; |
| 274 | Topological Aspects of Electron-Phonon Coupling Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We revealed the topological aspects of the electron-phonon coupling strength. |
Jiabin Yu; Chris Ciccarino; Raffaello Bianco; Yuanfeng Xu; Chao-Xing Liu; Ion Errea; Prineha Narang; B. Andrei Bernevig; |
| 275 | Pair Density Waves and Superconductivity in The Π-flux Hofstadter Model Using Mean-Field and Renormalization Group Analyses Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our work we consider the model away from half-filling and study the possibility of weak coupling instabilities in the presence of extended Hubbard interactions occuring around the less-studied fillings corresponding to Van Hove singularities. |
Daniel Shaffer; Luiz Santos; |
| 276 | Quantized Magnetoelectric Effect in Antiferromagnetic MnBi2Te4 Tunnel Junctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using time-dependent non-equilibrium Green’s functions, we theoretically demonstrate that if the tunnel barrier is indeed an axion insulator, it should be directly reflected in the quantized tunnel current density. |
Yuhang Li; Ran Cheng; |
| 277 | Transport and Tunneling Studies of Ferromagnetic Mn(Bi,Sb)6Te10 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we synthesize Mn(Bi,Sb) 6Te 10 crystals with a ferromagnetic ground state and study exfoliated sheets of several tens of nm in thickness using Hall bar and tunnel junction structures prepared inside a glovebox. |
Carlton Drew; Jun Zhu; |
| 278 | The Axion Insulator State in Hundred-Nanometer-Thick Magnetic Topological Insulator Sandwich Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we use MBE to synthesize magnetic TI sandwich heterostructures with thicknesses up to 106 nm. |
Deyi Zhuo; |
| 279 | Axion Optical Induction of Antiferromagnetic Order Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In our work, we report the surprising observation of helicity-dependent optical control of fully-compensated antiferromagnetic (AFM) order in 2D even-layered MnBi2Te4, a topological Axion insulator with neither chirality nor M. By shining circularly-polarized light while cooling across the Néel temperature, surprisingly, we found that light helicity and wavelength can directly control the AFM order parameter. |
Jian-Xiang Qiu; Ni Ni; Suyang Xu; |
| 280 | Polar Kerr Effect in Antiferromagnets By Optical Axion Electrodynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will introduce a theory of optical axion electrodynamics that allows for a simple quantitative analysis. |
Junyeong Ahn; Suyang Xu; Ashvin Vishwanath; |
| 281 | Topological Magnetoelectric Effects in Magnetic Topological Insulator Thin Films Via First-principles Calculations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To elucidate salient features of the AI phase, we present here a first-principles study of the crystal and electronic structure of multilayered magnetized TI thins films. |
Shahid Sattar; Nezhat Pournaghavi; Chao Lei; Perry Mahon; Allan MacDonald; Carlo Canali; |
| 282 | High Throughput Search of Magnetic Topological Materials II Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we apply the formalism of magnetic topological quantum chemistry, which provides a connection between the symmetry properties of Bloch functions topology. |
Iñigo Robredo; |
| 283 | Field-induced Topological Hall Effect in Antiferromagnetic Axion Insulator Candidate EuIn2As2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: EuIn 2As 2 has been theoretically recognized as a long-awaited intrinsic antiferromagnetic bulk axion insulator. In this talk, we will discuss the magnetotransport properties of this material through our magnetoresistance (MR) and Hall measurements. |
Jian Yan; Zhong Zhu Jiang; Rui Chun Xiao; Xuan Luo; Yu Ping Sun; Minoru Yamashita; |
| 284 | Modeling The Complex Magnetic Phase Diagram of The Axion Insulator Candidate EuIn2As2 in A Magnetic Field Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Motivated by the recent neutron scattering experiments that report a complex magnetic behavior in an external magnetic field, we design and study a minimal symmetry-constrained spin model that exhibits a broken-helix ground state. |
Ana-Marija Nedic; Simon Riberolles; Brinda Kuthanazhi; Thais Trevisan; Feng Ye; Paul Canfield; Robert McQueeney; Peter Orth; Benjamin Ueland; |
| 285 | Coexisting Magnetic Domains with Distinct Field-induced Symmetries in The Topological Magnet EuIn2As2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We predict that the presence of domains with differing magnetic symmetries has the potential to induce bulk topological edge modes at the magnetic domain boundaries. |
Simon Riberolles; Ana-Marija Nedic; Thais Victa Trevisan; Brinda Kuthanazhi; Feng Ye; Paul Canfield; Robert McQueeney; Peter Orth; Benjamin Ueland; Sergey Bud’ko; |
| 286 | Unraveling Magnetoelectric Effect in Axion Insulator Candidate EuIn2As2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: EuIn2As2 has been proposed to be a promising candidate for the Axion insulator. In this work, we perform optical Second Harmonic Generation(SHG) and symmetry analysis to understand its magnetic order. |
Houchen Li; Paul Canfield; Suyang Xu; |
| 287 | Gapped Surface States in Axion Insulator Candidate EuIn2As2 Imaged By Scanning Tunneling Microscopy Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we use scanning tunneling microscopy (STM) and quasiparticle interference (QPI) imaging to measure the band structure of EuIn2As2. |
Yizhe Sun; Yu Liu; Christian Matt; Harris Pirie; Jennifer Hoffman; Lin-Lin Wang; Brinda Kuthanazhi; Paul Canfield; Sergey Bud’ko; |
| 288 | Realizing Dirac and Weyl Fermions in Magnetically Tunable Zintl Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our study identifies Sr 1-xEu xIn 2(As, P) 2 as a tunable materials platform for investigating the physics and applications of Weyl and nodal fermions in the scaffolding of crystalline and axion insulator states. |
Sougata Mardanya; Barun Ghosh; Cheng-Yi Huang; Shin-Ming Huang; Hsin Lin; Tay-Rong Chang; Sugata Chowdhury; Arun Bansil; Bahadur Singh; |
| 289 | Spin-valley Locking, Bulk Quantum Hall Effect and Nonlinear Hall Effect in A Noncentrosymmetric Dirac Material Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will report a bulk spin-valley locked electronic state in a 3D non-centrosymmetric Dirac material BaMnSb 2 [1]. |
Zhiqiang Mao; |
| 290 | Field-direction Dependent Quantum-limit Magnetoresistance in Correlated Dirac Semimetal CaIrO3 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this study, we report a largely anisotropic quantum-limit magnetoresistance (MR) in perovskite CaIrO 3, which is a strongly-correlated Dirac semimetal on the verge of Mott transition [1,2]. |
Rinsuke Yamada; Jun Fujioka; Minoru Kawamura; Shiro Sakai; Motoaki Hirayama; Ryotaro Arita; Tatsuya Okawa; Daisuke Hashizume; Ryosuke Kurihara; Masashi Tokunaga; Yoshinori Tokura; |
| 291 | Anomalous Hall Effect in HfTe5 Thin Flakes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we report on the magnetotransport properties of HfTe 5 thin flakes We fabricate the HfTe 5 thin flake devices, with a thickness ranging from 90 nm to 280 nm, inside an argon filled glove-box and cap the samples with hBN to ensure that the sample quality is pristine. |
Robert Welser; Jinyu Liu; David Graf; Michael Pettes; Javier Sanchez-Yamagishi; Luis Jauregui; |
| 292 | Chiral Anomaly Across The Lifshitz Transition in ZrTe5 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we study the chiral anomaly across the temperature-induced Lifshitz transition, in which the Fermi level goes from the conduction to the valence band with increasing temperature, by performing measurements of the CME and PHE in ZrTe 5 in a broad temperature range and high magnetic fields. |
Pedro Mercado; Genda Gu; Qiang Li; |
| 293 | Non-monotonic Temperature Dependence of The Thermal Chiral Anomaly in Bi(1-x)Sb(x) Weyl Semimetals Below 10K Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The anomalous thermal conductivity at 4K is about one order of magnitude larger than the theory predicts. |
Minyue Zhu; Dung Vu; Joseph P Heremans; Joonsang Kang; |
| 294 | Unconventional Resistivity Scaling in Topological Semimetal CoSi Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our study shows that topological semimetals bear the potential of overcoming the resistivity scaling challenges in back-end-of-line interconnect applications. |
Hsin Lin; Shang-Wei Lien; Ion Garate; Utkarsh Bajpai; Cheng-Yi Huang; Chuang-Han Hsu; Yi-Hsin Tu; Nicholas Lanzillo; Arun Bansil; Tay-Rong Chang; Gengchiau Liang; Ching-Tzu Chen; |
| 295 | Unconventional Resistivity Scaling in Polycrystalline NbP Thin Films Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The electrical resistivity of ultrathin metal films increases with decreasing thickness due to electron scattering from the film surfaces. This behavior limits the performance of … |
Asir Intisar Khan; Xiangjin Wu; Byoungjun Won; Emily Lindgren; Christopher Perez; Kenneth Goodson; Yuri Suzuki; Il-Kwon Oh; H.-S. Philip Wong; Eric Pop; |
| 296 | Nonlinear Hall Effects in Weyl Semimetal Thin Films Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we will focus on the nonlinear Hall effects in WSM thin films in which the surface states are expected to play a more important role in charge transport due to large surface-to-volume ratio. |
Ruihao Li; Shulei Zhang; |
| 297 | Investigation of Nonlinear Hall Effect Induced By Berry Curvature Dipole in A Topological Semimetal Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we discuss electronic and transport properties of a topological semimetal exhibiting BCD-induced nonlinear Hall effect using angle-resolved photoemission spectroscopy, first-principles calculations, and transport measurements. |
Ji-Eun Lee; Yu Liu; Minseong Kwon; Jinwoong Hwang; Minhyun Cho; Dong-Soo Han; Jun Woo Choi; Young Duck Kim; Zhi-Xun Shen; Sung-Kwan Mo; Cedomir Petrovic; Choongyu Hwang; Se Young Park; Chaun jang; Hyejin Ryu; |
| 298 | Thermopower of Nodal Line Semimetals in A Magnetic Field Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We consider the thermoelectric response of a nodal line semimetal as a function of temperature T and applied magnetic field B. |
Poulomi Chakraborty; Brian Skinner; Aaron Hui; |
| 299 | P X N-Type Transverse Thermoelectrics in A Type-II Weyl Semimetal TaIrTe4 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report the observation of p x n-type behavior in TaIrTe 4, a type-II Weyl semimetal, with an in-plane thermopower anisotropy Sxx-Syy reaching a maximum value 40 μ V/K at 200 K. Intriguingly. |
Cheng-Chien Chen; Joshua Mutch; Wei-Chih Chen; Cheng-Yi Huang; Paul Malinowski; Jiun-Haw Chu; |
| 300 | Transport Evidence of Weyl Orbit in Dirac Semimetal ZrSiSe Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Fast Fourier Transform of Shubnikov-de Haas oscillations in thin flakes of ZrSiSe, a nonsymmorphic Dirac semimetal, reveals the unexpected frequency of 140 T not related to any known surface (450 T) or bulk (220 T) Fermi surface. We show that this frequency has a 2D nature by providing angle dependence and thickness dependence of quantum oscillations. |
Arash Fereidouni; Ashby Philip John; Krishna Pandey; Rabindra Basnet; Jin Hu; Hugh Churchill; |
| 301 | Sustainable Manufacturing Supply Chains for Vehicle Electrification Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Life cycle assessment is a valuable tool to evaluate the overall sustainability of lithium-ion battery manufacturing. I will describe how this holistic analysis framework along with material flow analysis can help us design and pursue a battery supply chain that is tailored to limit negative environmental and social effects of lithium-ion battery manufacturing. |
Jennifer Dunn; |
| 302 | Reducing Cement and Concrete Environmental Impact: A Physicist’s Perspective Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Cement is the main binding agent in concrete, literally gluing together rocks and sand into the most-used synthetic material on Earth. However, cement production is responsible … |
Emanuela Del Gado; Abhay Goyal; Nicos Martys; |
| 303 | Greene Dissertation Award Winner: Characterising Nanostructure and Understanding Its Influence on Phase Stability in Halide Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we use correlated nanoscale characterisation methodologies to explore the nanoscopic landscape of beam-sensitive halide perovskite materials. |
Tiarnan Doherty; |
| 304 | Greene Dissertation Award Winner: Negative Capacitance Electronics: Manipulating Ferroelectricity in Atomically Thin Simple Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: The explosion in energy consumption from microelectronics is projected to exceed 20% of worldwide electricity production by 2030 and is continuing to exponentially rise, which calls for fundamental breakthroughs in information processing and on-chip energy technologies. In this talk, I will introduce electronic metamaterials as a new atomic scale platform towards this goal of energy-efficient and energy-autonomous electronics, in which negative capacitance phenomena lead to unprecedented charge responses beyond what is possible in traditional materials. |
Suraj Cheema; |
| 305 | Manipulation and Topological Entanglement of Fractionalized Injected Charge in The Metastable State of 1T-TaS2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we investigate the microscopic dynamics of injected charges in the metastable state after photoexcitation or carrier injection in a multiple-tip scanning tunnelling microscope. |
Dragan Mihailovic; |
| 306 | Coherent Resonant Tunneling Transport Through Non-centrosymmetric GaN/AlN Multi-barrier Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, using a combined experimental and theoretical approach, we elucidate the important consequences of the built-in polarization fields on the resonant tunneling transport characteristics of multiple-barrier GaN/AlN heterostructures. |
Jimy Encomendero; Vladimir Protasenko; Debdeep Jena; Grace Xing; |
| 307 | Universality and The Thermoelectric Transport Properties Through Quantum Dots Systems: Seeking for Conditions That Could Improve The Efficiency Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We describe “anomalies” in the photo-emission spectroscopy and inverse photo-emission spectroscopy that “arise” associated to the conditions that enhance the efficiency in order to guide possible experimental work that submit to the experimental test our theoretical predictions, discussing to possible temperature values and conditions that could be linked with the experimental research of our results. |
Roberto Franco Penaloza; |
| 308 | Accumulation-mode Single-electron Pumping in Undoped GaAs Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We demonstrate single-electron pumping at high frequencies in accumulation-mode undoped SEPs, distinct from the depletion-mode devices typically used in doped AlGaAs/GaAs heterostructures. |
Stephen Harrigan; Francois Sfigakis; Arjun Shetty; Lin Tian; Nachiket Sherlekar; HoSung Kim; Alan Tam; Zbigniew Wasilewski; Michael Reimer; Jonathan Baugh; |
| 309 | Nonlinear Current-voltage Characteristics of Mesoscopic Structures in Non-equilibrium Ballistic Transport Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present nonlinear current-voltage characteristics in both 2- and 4-probe configurations in several progressively complex mesoscopic geometries and point contacts under non-equilibrium transport. |
Jean Heremans; G. Kataria; A. Gupta; Mani Chandra; R. Sundararaman; S. Fallahi; G. Gardner; M. Manfra; |
| 310 | Inverse Design of Semiconductor Heterostructures Using First-Principles Modelling and Machine Learning Approaches Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will discuss our machine learning (ML) based approaches that extend the applicability of ab initio techniques for predicting electronic properties of fabricated heterostructures. |
Sanghamitra Neogi; Artem Pimachev; |
| 311 | Transport Properties of Polarization-Induced 2D Electron Gases in Epitaxial AlScN/GaN Heterojunctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report the epitaxial growth of AlScN/GaN heterostructures by plasma-assisted molecular beam epitaxy (MBE) and the study of transport characteristics of the polarization-induced 2D electron gases (2DEGs) using temperature-dependent magnetotransport measurement. |
Thai-Son Nguyen; Joseph Casamento; Chandrashekhar Savant; Yongjin Cho; Huili Grace Xing; Debdeep Jena; |
| 312 | Universality Classes of The Anderson Transitions Driven By Quasiperiodic Potential in The Three-dimensional Wigner-Dyson Symmetry Classes Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we study the critical behavior of the ATs driven by QP in the three-dimensional (3D) Anderson model, the Peierls phase model, and the Ando model, which belong to the Wigner-Dyson symmetry classes. |
Tomi Ohtsuki; Xunlong Luo; |
| 313 | Driven-dissipative Charge Transport in Small Networks: Negative Conductance and Light-induced Currents Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Nanojunction experiments with single molecules or quantum dots placed between macroscopic leads allow the exploration of quantum transport at the nanoscale [1]. We model these systems adopting a Markovian open-quantum system approach to compute the current-voltage response of small-size networks of interacting two-level conducting sites that are coupled to leads, and radiative and non-radiative reservoirs [2]. |
Felipe Recabal; Felipe Herrera; |
| 314 | A Highly Scalable NEGF Solver for Modeling Time-Dependent Quantum Transport in Nanomaterials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Quantum transport through these nanomaterials can be accurately characterized using the time-dependent non-equilibrium Green’s function method that must be self-consistently coupled with Poisson’s equations. In this work, we present an open-source, GPU-accelerated software framework to solve these equations and demonstrate its scaling on manycore/GPU architectures. |
Saurabh Sawant; Jackie Yao; Revathi Jambunathan; Francois Leonard; Andy Nonaka; |
| 315 | Gate-induced Metallic Transition in Colloidal Quantum Dots Superlattice Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we demonstrate a fascinating transition from insulating to metallic behavior on lead sulfide (PbS) colloidal QDs. |
Ricky Septianto; Retno Miranti; Takaaki Hikima; Nobuhiro Matsushita; Yoshihiro Iwasa; Satria Bisri; |
| 316 | Spatially-Complex 2D/3D Geometries and Boundary Conditions in Electron Hydrodynamics Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we use our spatially-resolved Boltzmann transport framework SpaRTaNS to investigate the effect of spatially-complex 2D and 3D geometries, as-well as common boundary conditions, on the observed current profiles. |
Georgios Varnavides; Adam Jermyn; Prineha Narang; |
| 317 | Alloy-based Tuning of The Bandgap and Exciton Binding Energy in Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We have used the technique of electroabsorption (EA) to study the exciton binding energy and other properties of 2D metal-halide perovskites (MHPs). |
John Colton; Kameron Hansen; Michele Eggleston; Carrie McClure; Blake Romrell; Carter Shirley; Luisa Whittaker-Brooks; |
| 318 | Screening of The Electron-Hole Interaction in Two-Dimensional Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Two-dimensional perovskites provide an ideal template to explore this question due to their large exciton binding energies (E b) and highly frequency-dependent dielectric properties. Using density functional theory calculations, dielectric spectroscopy, and electroabsorption spectroscopy on over 30 distinct perovskite structures, we determine the frequency range of the dielectric spectrum that modulates E b. Additionally, we answer several long-standing questions regarding dielectric and exciton properties in this important class of optoelectronic materials, namely, the dielectric values of the barrier and well layers, the value of E b for the popular BA 2PbI 4 compound, the point where 2D MHPs transition from isolated quantum wells to superlattices, the correct model for describing exciton states in 2D MHPs, and the following effects on E b: temperature, sample morphology, octahedral tilting, barrier polarizability, well polarizability, barrier length, and well length. |
Kameron Hansen; John Colton; Carrie McClure; Andre Schleife; Cindy Wong; Luisa Whittaker-Brooks; |
| 319 | Ion Migration in 2D and 3D Metal Halide Perovskites Studied Using Electrochemical Impedance Spectroscopy on An Interdigitated Electrode Geometry Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Permittivity is connected to important characteristics of these materials such as exciton binding energy, effective mass, and transition dipole moment, but has proven challenging to accurately measure. Using experimental measurements of the impedance of perovskite layers on interdigitated electrodes, we have been able to develop a model which allows us to deduce the frequency dependence of permittivity in these materials. |
Carrie McClure; Kameron Hansen; Chapman Lindsay; Carter Shirley; John Colton; |
| 320 | Trends in Acceptor Dopants for Halide Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, possible acceptor dopants are evaluated in the halide perovskites, using first-principles calculations based on a hybrid functional with spin-orbit coupling. |
John Lyons; Michael Swift; |
| 321 | Persistent Photoconductivity in Perovskite Oxide Semiconductors Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The interaction of transparent oxide semiconductors with light is a central issue for a range of applications. Persistent effects could be exploited for holographic memory or … |
Matthew McCluskey; |
| 322 | Vibrational Study of Hybrid Organic-inorganic Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We would be presenting our results from inelastic neutron scattering measurements on partial-deuterated powder sample of MAPbI 3 and non-deuterated single crystal of MAPbBr 3. |
Haritha Sindhu Rajeev; Xiao Hu; Seunghun Lee; Joshua Choi; Mina Yoon; |
| 323 | Direct Evidence of Polaron Formation in Halide Perovskites Via Carrier Effective Mass Measurements Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Our work demonstrated a new approach to track the strength and ultrafast lifetimes of photoinduced carrier-boson interactions down to picosecond timescales, that can be applied to a wide range of solid-state systems. |
Di Bao; |
| 324 | Exploring The PT Structural Phase Diagram of ABX3 Perovskite PV Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Perovskite photovoltaic (PV) ABX 3 systems possess high energy-conversion efficiencies. Understanding their atomic-level properties will lead to their optimization and utilization … |
Sizhan Liu; Stella Chariton; Vitali Prakapenka; Zhenxian Liu; Tieyan Chang; Yu-Sheng Chen; Sanjit Ghose; Yong Yang; Sandun Amarasinghe; Trevor Tyson; |
| 325 | Fine Structure of Excitons in Vacancy Ordered Double Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we analyse the role of electron-hole (e-h) interactions in VODP by employing state-of-art G 0W 0 method and Bethe-Salpeter equation (BSE) calculations. |
Bruno Cucco; Claudine KATAN; Jacky Even; Mikael Kepenekian; George Volonakis; |
| 326 | One-dimensional Metal Halides with Edge-sharing Octahedra at High Pressure Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here I will focus on two examples where lattice compression is used to modulate the electronic structures and search for intriguing electronic states in one-dimensional metal halides with edge-sharing octahedra. |
Yu Lin; |
| 327 | The Electronic Disorder Landscape of Mixed Halide Perovskite Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we use localization landscape theory to reveal that the static disorder due to compositional alloying for Iodide:Bromide perovskite contributes at most 3 meV to the Urbach energy. |
Yun Liu; Jean-Philippe Banon; Kyle Frohna; Yu-Hsien Chiang; Ganbaatar Tumen-Ulzii; Samuel Stranks; Marcel Filoche; Richard Friend; |
| 328 | Halide Perovskites As Capable Thermoelectric Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: For future thermoelectric applications, reliable materials synthesis methods and thermoelectric property measurements are required. In this talk, we introduce perovskites as a new thermoelectric materials system and discuss research capabilities and future perspectives on these materials systems. |
Amin Nozariasbmarz; Luyao Zheng; Bed Poudel; Kai Wang; WENJIE LI; YU ZHANG; Shashank Priya; |
| 329 | Symmetry-informed Tight-binding Modeling of Disordered Hybrid Perovskites Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I will describe how a model tight-binding Hamiltonian can be extended from the archetypal CH 3NH 3PbI 3 bulk perovskite [3-5] to mixed halide perovskites and two-dimensional perovskites using a combination of symmetry considerations and DFT calculations. |
Simon Thebaud; Claudio Quarti; Yorgos Volonakis; Mikael Kepenekian; Laurent Pedesseau; Claudine KATAN; Jacky Even; |
| 330 | Macro/Mesoscopic Scale Oscillatory PL Ring Structure Due to Photo-induced Ion Displacement in Mixed-Halide Perovskites (FA,MA)Pb(BrxI1-x)3 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Contrary to the common belief that the light-induced halide ion segregation in a mixed halide alloy occurs within the illuminated area, we discover that the anion segregation in a (FA,MA)Pb(Br xI 1-x) 3 thin film is a nonlocal effect of which the Br ion are expelled from the illuminated area, forming a ring with the size proportional to the illumination beam size, from μm up to well over mm, depending on the beam size. |
Xiaoxiao Sun; Yong Zhang; Weikun Ge; |
| 331 | Higher-order Topological Insulators Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using minimal examples, I will explain the fundamental types of HOTIs and their symmetry protection. |
Frank Schindler; |
| 332 | Two-atom-thin Topological Crystalline Insulators Lacking Out of Plane Inversion Symmetry Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: A two-dimensional topological crystalline insulator (TCI) with a single unit cell (u.c.) thickness is demonstrated here. The chiral nature of the bulk TCI Hamiltonian from Fu [1] … |
Salvador Barraza-Lopez; |
| 333 | Metal-Organic Molecular Beam Epitaxy of WTe2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we introduce a molecular beam epitaxy method, based on the metal-organic precursor W(CO) 6, for growing monolayer WTe 2 [1]. |
Kevin Hauser; Gregory Lapit; Christian Matt; Jason Hoffman; Jennifer Hoffman; |
| 334 | Tuning Topological Properties in Bi2Se3/VSe2 Heterostructures Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we present a combined angle-resolved photoemission spectroscopy (ARPES) and first-principles study of the topological properties of few-layer 1T VSe 2 on few-quintuple layer Bi 2Se 3 heterojunctions. |
Xuance Jiang; Elio Vescovo; Turgut Yilmaz; Deyu Lu; |
| 335 | Weak Antilocalization in Selective-area Grown Pb1-xSnxTe Nanowire Networks Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Hybrid TCI/superconductor nanowire networks are of interest for applications in quantum computation, as these are predicted to host non-abelian quasiparticles, such as Majorana fermions or parafermions [4]. Towards this goal, we use a pre-patterned SiNx mask on a InP(111) substrate for selective area growth of Pb 1-xSn xTe by molecular beam epitaxy [5], and define Hall bar devices with side gates that allow for simultaneous Hall and field-effect measurements. |
Maarten Kamphuis; Femke Witmans; Joost Ridderbos; Jonas Kareem; Sander Schellingerhout; Chuan Li; Erik P. A. M. Bakkers; Floris Zwanenburg; Alexander Brinkman; |
| 336 | Close-to-Dirac Point Shift of Large-area MOCVD-grown Bi2Te3’s Fermi Level Following Growth on Sb2Te3 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We developed a Metal Organic Chemical Vapour Deposition (MOCVD) process to grow the bi-layered Bi 2Te 3(top)/Sb 2Te 3 topological insulator on top of 4’’ Si(111). |
Roberto Mantovan; Lorenzo Locatelli; Polychronis Tsipas; Athanasios Dimoulas; Akylas Lintzeris; Emanuele Longo; Arun Kumar; Massimo Longo; |
| 337 | Exploration of Topological Electronic Structures in Bismuth Halide Series Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In addition, discovery of gate-tunable Josephson supercurrent as well as existence of electronic instabilities driven by topological surface states (TSS) bring Bi 4X 4 a fertile candidate to study topological many-body physics and emergent quantum physics. In this talk, I will present experimental characterizations for electronic structures among the Bi 4X 4 series in terms of angle-resolved photoemission spectroscopy (ARPES), which is smoking-gun evidence to identify TSS and instabilities in them. |
Ji Seop Oh; Tianyi Xu; Nikhil Uday Dhale; Jianwei Huang; Sheng Li; Chiho Yoon; Chao Lei; Hanlin Wu; Makoto Hashimoto; Donghui Lu; Jonathan Denlinger; Christopher Jozwiak; Aaron Bostwick; Eli Rotenberg; Chun Ning Lau; Bing Lv; Fan Zhang; Robert Birgeneau; Ming Yi; |
| 338 | Shubnikov-de Haas Oscillations in Pb1-xSnxTe Epitaxial Films Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We analyzed Shubnikov de-Haas (SdH) oscillations in samples with various Sn concentrations at various temperatures and field angles. |
Samuel Poage; Antonio Gonzalez; Athby Al-Tawhid; Ian Mercer; Andrew Liao; Shalinee Chikara; Kaveh Ahadi; |
| 339 | G-factor of Topological States from Magnetooptical Spectroscopy and Quantum Oscillations in Pb1-xSnxSe Quantum Well Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, we report the high g-factor of the surface state in Pb 1-xSn xSe quantum wells. |
Jiashu Wang; Tianyi Wang; Mykhaylo Ozerov; Maksym Zhukovskyi; Tatyana Orlova; Dmitry Smirnov; Xinyu Liu; Badih Assaf; |
| 340 | Highly Tunable Band Inversion in AB2X4 (A=Ge, Sn, Pb; B=As, Sb, Bi; X=Se, Te) Compounds Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using density functional theory (DFT) calculations, we have studied the septuple layered AB 2 X 4 series compounds, where A=(Ge, Sn and Pb), B=(As, Sb and Bi) and X=(Se and Te). |
Lin-Lin Wang; |
| 341 | Reducing The 3D-2D Crossover Thickness in Bi2Se3 By Heterostructure Engineering Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here, a combined first-principles theory and experimental study shows that an energy separation of the two surface states can be sustained to prevent surface state hybridization until 3 QLs. |
Yuanxi Wang; Hemian Yi; Danielle Hickey; Nasim Alem; Cui-Zu Chang; |
| 342 | Molecular Beam Epitaxy and Characterization of Bi2Se3 and Sb2Te3 on In2Se3 Layers Via Selenium Passivation of Non-vicinal InP(111)B Substrates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this study, we explore the quality of epitaxial Bi 2Se 3 and Sb 2Te 3 on 5 nm ultra-thin In 2Se 3 layers grown by a selenium passivation technique during the oxide desorption of the InP(111)B substrates, without the use of an indium source. |
Kaushini Wickramasinghe; Candice Forrester; Ido Levy; Maria Tamargo; |
| 343 | Quantum Interference in SnTe Nanowires Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To this end, we perform transport measurements on SnTe nanowires. |
Femke Witmans; Maarten Kamphuis; Joost Ridderbos; Job Noordkamp; Mathijs Mientjes; Max Hoskam; Xin Guan; Chuan Li; Erik P. A. M. Bakkers; Floris Zwanenburg; Alexander Brinkman; |
| 344 | Topology from Band (co-)representation Theory in Spinful Systems: Spin Groups and Magnetic Line Groups Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: Topological Quantum Chemistry (TQC) has been successful in diagnosing band topology using only the symmetries of the system [1, 2]. We begin extending TQC to magnetic systems in … |
Hana Schiff; Judit Romhanyi; Saša Dmitrovic; Paul McClarty; Alberto Corticelli; |
| 345 | Symmetry Indicators in Commensurate Magnetic Flux Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We derive a framework to apply topological quantum chemistry in systems subject to magnetic flux. |
Yuan Fang; Jennifer Cano; |
| 346 | Vortex Excitations in Dirac Bose-Einstein Condensates Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We explore vortices in non-equilibrium Dirac Bose-Einstein condensates (Dirac BEC) described by a multi-component Gross-Pitaevskii equation. |
Joris Schaltegger; Alexander Balatsky; |
| 347 | Surface-induced Ferromagnetism and Anomalous Hall Transport at Hf2S(0001) and Zr2S(0001) Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Using first-principles calculations, we predict that the bulk layered electrides Hf 2S and Zr 2S are nonmagnetic with massive Dirac nodal-line (DNL) states arising from Hf-5 d/Zr-4 d cationic and interlayer anionic electrons. |
Shuyuan Liu; Jun-Hyung Cho; |
| 348 | Multi-state Stripe Domain Racetrack Memory Devices Utilizing Weyl Magnetoresistance Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we instantiate the Dirac equation on a lattice and model NEGF transport through magnetic stripe domains in a toy MWSM Hamiltonian. |
Vivian Rogers; Swati Chaudhary; Jean Anne Incorvia; |
| 349 | Giant Anomalous Hall Effect in A Spin Orbit Coupled Ferromagnet MnBi Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this presentation, we report the giant AHE and anomalous Nernst effect (ANE) in a simple binary ferromagnet MnBi. |
Bin He; Dong Chen; Fan Li; Walter Schnelle; Yu Pan; Claudia Felser; |
| 350 | Evolution of Structure and Magnetism in The Square Net Series TbTe2-xSbx Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: A recent example was seen in GdSb xTe 2-x-δ, where Sb substitution results in structural modulations that coincide with modification of the electronic state and magnetic order [1]. Motivated by this, we investigated TbTe 2-xSb x (0 < x < 0.55) , which is structurally similar – but additionally has an anisotropic f-state with a non-zero orbital quantum number. |
Olatunde Oladehin; Moises Bravo; Keke Feng; Jorge Galeano-Cabral; Kaya Wei; Julia Chan; Ryan Baumbach; |
| 351 | High-efficiency Quantum Rectenna for Millimeter Wave and Terahertz Technologies Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a new concept for rectenna that utilizes the nonlinear transverse current-voltage characteristic of junction-free quantum materials to rectify millimeter and terahertz waves into DC electricity. |
Yugo Onishi; Liang Fu; |
| 352 | Disorder Effects in Planar Topological Josephson Junctions Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Planar Josephson junctions based on InAs and Al are another promising platform for the realization of Majorana bound states for which the effects of disorder, so far, have not been studied in depth. In this talk I will present some of the recent results that we have obtained to quantitatively estimate the dominant sources of disorder in planar topological Josephson junctions, and their effects on the robustness and detection of the Majorana bound states that can be realized in such junctions. |
Han Fu; Joseph Cuozzo; Michael Sizemore; Enrico Rossi; |
| 353 | Anomalous Magnetotransport of Single Crystal CsV3Sb5 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We report on measurements of the in-plane transverse magnetoresistance (MR) of the Kagome superconductor CsV 3Sb 5. |
Ulrich Welp; Ramakanta Chapai; Alexei Koshelev; Matthew Smylie; Duck Young Chung; Mercouri Kanatzidis; John Mitchell; Wai-Kwong Kwok; |
| 354 | Magnetic Breakdown in The Kagome Superconductor CsV3Sb5 Under High Magnetic Field Related Papers Related Patents Related Grants Related Venues Related Experts View Abstract: The recently discovered layered Kagome metals of composition AV 3Sb 5 ( A = K, Rb, Cs) exhibit a complex interplay among superconductivity, charge density wave order, … |
Ramakanta Chapai; Maxime Leroux; Vincent Oliviero; David Vignolles; Nicolas Bruyant; Matthew Smylie; Duck Chung; Mercouri Kanatzidis; Wai-Kwong Kwok; John Mitchell; Ulrich Welp; |
| 355 | Absence of Edge States in The Valley Chern Insulator in Moire Graphene Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present results from exact diagonalization of the tight-binding model of commensurate structures in the ribbon geometry. |
Ahmed Khalifa; Ganpathy Murthy; Ribhu Kaul; |
| 356 | Towards The Quantum Spin Hall Regime in (Bi1−xSbx)2Te3 Ultrathin Films Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Theory predicts that reducing the thickness of 3D topological insulator thin films opens a hybridization gap at the Dirac point. |
Sofie Kölling; Feike van Veen; Roel Metsch; Karola Neeleman; Daniel Rosenbach; Inanc Adagideli; Alexander Brinkman; |
| 357 | Fermi Surface Topology and Interlayer Modulation of Charge Density Waves in The Kagome Material CsV3Sb5 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we investigated the Fermi surface reconstruction and topology in the presence of interlayer CDW (2x2x2) on CsV 3Sb 5 by theoretical calculations. |
Binghai Yan; Hengxin Tan; Yongkang Li; Yizhou Liu; Daniel Kaplan; Ziqiang Wang; |
| 358 | Resistivity Anomaly and Negative Longitudinal Magnetoresistance in ZrTe5 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose a theory of quasiparticles to address a series of anomalous behaviors measured in ZrTe 5. |
Bo Fu; |
| 359 | First Principle Study of WTe2 from Monolayer to Bilayer and Bulk Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We use density functional theory (DFT) to calculate the total energy of a series of monolayer transition metal dichalcogenides, for three phases 1H (hexagonal), 1T (orthorhomibic) and 1T’ (orthorhomibic). |
ke liu; |
| 360 | Minimal Model of Two-Band Quadratic Band Crossing Capturing Wave Function Geometry Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we propose a simple model which captures full geometrical aspect of the general two-band quadratic band crossing points (QBCPs) with minimal parameters. |
Junseo Jung; Hyeongmuk Lim; Bohm-Jung Yang; |
| 361 | Band Energy Dependence of Defect Formation in The Topological Semimetal Cd3As2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: To computationally study the self-doping of Cd 3As 2, we combine density functional theory (DFT) calculations for defect formation energies with quasi-particle self-consistent GW (QSGW) electronic structure calculations. |
Chase Brooks; Mark van Schilfgaarde; Dimitar Pashov; Jocienne Nelson; Dan Dessau; Kirstin Alberi; Stephan Lany; |
| 362 | Valley Axion Field and Surface Phonon Modes in 3D Time Reversal Invariant Dirac Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this work, we consider a thin film of a 3D time reversal invariant Dirac semi metal <! |
Abhinava Chatterjee; Chaoxing Liu; |
| 363 | Black Hole Mirages: Electron Lensing and Berry Curvature Effects in Inhomogeneously Tilted Weyl Semimetals Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, I present our recent study about electronic transport in Weyl semimetals with spatially varying nodal tilt profiles. |
Andreas Haller; Suraj Hedge; Chen Xu; Thomas Schmidt; Tobias Meng; Christophe De Beule; |
| 364 | Nonlinear Quantum Electrodynamics in Dirac Materials Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We propose experiments and discuss the applications in novel materials. |
Aydin Keser; Yuli Lyanda-Geller; Oleg Sushkov; |
| 365 | Revisiting The Fate of Interacting 3D Semimetals in The Ultra-quantum Limit Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We revisit the fate of semimetals in the ultra-quantum limit using functional renormalization group techniques, allowing for general symmetry-allowed bare interactions. |
Nandagopal Manoj; Jason Alicea; |
| 366 | Computing Symmetry-Protected Band Crossings and Boundary Nodes from Random Matrix Models Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Quantifying these properties, such as the band-crossings and boundary modes, can be difficult for real materials with complicated Hamiltonians. Here, we model them with a random matrix model proposed by Wilkinson and coauthors, which combined translationa symmetry with the successful description of complex systems by random matrices. |
Hung-Hwa Lin; Daniel Arovas; Yi-Zhuang You; |
| 367 | Electronic Transport in Weyl Semimetals with A Uniform Concentration of Torsional Dislocations Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this article, we consider a theoretical model for a type I Weyl semimetal, under the presence of a diluted uniform concentration of torsional dislocations. |
Enrique Munoz; Daniel Bonilla; |
| 368 | Anomalous Electron-phonon Coupling in The Kagome Ferromagnetic Weyl Semimetal Co3Sn2S2 Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: We present a theoretical analysis based on first principles of the Raman response from the magnetic Kagome Weyl semimetal Co 3Sn 2S 2. |
Malhar Kute; Ge He; Leander Peis; Daniel Jost; Emily Been; Brian Moritz; Ramona Stumberger; Changjiang Yi; Youguo Shi; Andreas Baum; Rudi Hackl; Thomas Devereaux; |
| 369 | Dominant Two-dimensional Electron-phonon Interactions in The Dirac Semimetal Na3Bi Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: In this talk, we will present first-principles calculations of electron-phonon (e-ph) interactions and phonon-limited transport in the Dirac semimetal Na 3Bi. |
Dhruv Desai; Jinsoo Park; Jin-Jian Zhou; Marco Bernardi; |
| 370 | Topological Features in The Optical Response of Nodal Ring Semimetals Related Papers Related Patents Related Grants Related Venues Related Experts View Highlight: Here we calculate the optical conductivity and spectra of transmitted and reflected electromagnetic waves for different types of nodal ring semimetals. |
Maria Sebastian; Ashutosh Singh; Po-Yao Chang; Alexey Belyanin; |