Highlights of Condensed Matter Physics (DCMP) Talks @ APS 2019 March Meeting (1)
American Physics Society (APS) March meeting is one of the largest physics meetings in the world. In 2019, it was held in Boston, Massachusetts. More than 10,000 talks were presented in this meeting.
To help the community quickly catch up on the work presented in this meting, Paper Digest Team processed all talk abstracts, and generated one highlight sentence (typically the main topic) for each. Readers are encouraged to read these machine generated highlights / summaries to quickly get the main idea of each talk.
This article is on the talks related to Condensed Matter Physics (DCMP).
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TABLE : Condensed Matter Physics (DCMP) 1
| Title | Authors | Highlight | Session | |
|---|---|---|---|---|
| 1 | Perfectly gate-tunable graphene-WSe2 van der Waal�s heterostructure at the Schottky-Mott limit | LaGasse, Samuel; Dhakras, Prathamesh; Taniguchi, Takashi; Watanabe, Kenji; Lee, Ji Ung | By making one graphene-WSe 2 junction Ohmic, we perform electrical measurements of the Schottky barrier (SB) formed in the other junction. | Session 1: 2D Heterostructures — Transport |
| 2 | Naturally formed contacts between assorted metals and 2D TMD materials | Thorat, Ruhi; Wickramasinghe, Thushan; Jensen, Gregory; Bizhani, Maryam; Stinaff, Eric | We will present results from a modification of our growth process which allows for different metal contacts to be produced. | Session 1: 2D Heterostructures — Transport |
| 3 | Direct reversible writing of nanoscale doping patterns in van der Waals heterostructures | Shi, Wu; Kahn, Salman; Jiang, Lili; Wang, Sheng-yu; Tsai, Hsin-Zon; Wong, Dillon; Taniguchi, Takashi; Watanabe, Kenji; Wang, Feng; Crommie, Michael; Zettl, Alex | In this work we introduce a more flexible electron beam doping technique to induce controllable and erasable doping effect in (vdW) heterostructures. | Session 1: 2D Heterostructures — Transport |
| 4 | Effect of Remote Surface Optical Phonon Scattering in Ferroelectric-Gated Single- and Bi-layer Graphene | Chen, Hanying; Xiao, Zhiyong; Rajapitamahuni, Anil; Hao, Yifei; Watanabe, Kenji; Taniguchi, Takashi; Hong, Xia | We investigate the effect of the remote surface optical (RSO) phonon scattering on the transport properties of single and bi-layer graphene gated by ferroelectric Ba 0.6Sr 0.4TiO 3 (BSTO) thin films. | Session 1: 2D Heterostructures — Transport |
| 5 | Quantifying thermal boundary conductance of 2D-3D interfaces | Foss, Cameron; Aksamija, Zlatan | Here we investigate the temperature-dependent TBC of 42 interfaces formed between a group of six 2D materials and seven crystalline and amorphous substrates. | Session 1: 2D Heterostructures — Transport |
| 6 | Towards the Mechanism of Protonic Transport in Graphene Oxide | Samuilov, Vladimir; Poklonski, Nikolai | This report presents new experimental data of the protonic conduction in GO in a wide temperature range with the humidity as a parameter. | Session 1: 2D Heterostructures — Transport |
| 7 | AC Josephson effect in a capacitively shunted graphene Josephson junction | Yu, Fan; Kalantre, Sandesh; Finkelstein, Gleb; Amet, Francois; Williams, James | Here we study the AC Josephson effect on a junction made of graphene encapsulated in boron nitride and contacted by electrodes made of a superconducting molybdenum-rhenium alloy. | Session 1: 2D Heterostructures — Transport |
| 8 | Superconductivity in Graphene NbSe2 heterostructures | Gani, Satrio; Steinberg, Hadar; Rossi, Enrico | We study van der Waals heterostructures formed by graphene and monolayer NbSe 2 . | Session 1: 2D Heterostructures — Transport |
| 9 | Superconducting contact to 2D transition-metal dichalcogenide superconductors | Sinko, Michael; De La Barrera, Sergio; Lanes, Olivia; Hatridge, Michael; Hunt, Benjamin | By means of an in situ process of etching and angled Al evaporation, we present evidence of robust superconducting edge contact to NbSe 2 fully encapsulated by insulating hBN. | Session 1: 2D Heterostructures — Transport |
| 10 | Magnetotransport studies in hybrid 2D/0D nanostructures | Perez-Hoyos, Ethel; Luo, Yunqiu (Kelly); Dehankar, Abhilasha; Xu, Jinsong; Kawakami, Roland; Winter, Jessica; Johnston-Halperin, Ezekiel | The structures in this study are comprised of superparamagnetic iron oxide nanoparticles (SPIONs) and monolayer graphene. | Session 1: 2D Heterostructures — Transport |
| 11 | Transport measurements on 2D material devices | Huang, Yu | Transport measurements on 2D material devices | Session 1: 2D Heterostructures — Transport |
| 12 | Magnetism in two dimensions | Xu, Xiaodong | Magnetism in two dimensions | Session 2: 2D Materials (Metals, Superconductors, and Correlated Materials) — Magnetism |
| 13 | Gate-tunable Room-temperature Ferromagnetism in Two-dimensional Fe3GeTe2 | Deng, Yujun; Yu, Yijun; Song, Yichen; Zhang, Jingzhao; Wang, Nai Zhou; Sun, Zeyuan; Yi, Yangfan; Wu, Yi Zheng; Wu, Shiwei; Zhu, Junyi; Wang, Jing; Chen, Xianhui; Zhang, Yuanbo | Here, we developed a new device fabrication technique, and successfully isolated monolayers from layered metallic magnet Fe 3GeTe 2. | Session 2: 2D Materials (Metals, Superconductors, and Correlated Materials) — Magnetism |
| 14 | Magnetic properties of vanadium selenide epitaxial thin films | Nakano, Masaki; Yoshida, Satoshi; Bahramy, Saeed; Wang, Yue; Matsuoka, Hideki; Majima, Yuki; Kohama, Yoshimitsu; Ohigashi, Yuta; Kashiwabara, Yuta; Sakano, Masato; Ishizaka, Kyoko; Iwasa, Yoshihiro | In this presentation, we will show transport properties of our MBE-grown vanadium selenide epitaxial thin films, and discuss possible origins of this emergent ferromagnetism in our samples. | Session 2: 2D Materials (Metals, Superconductors, and Correlated Materials) — Magnetism |
| 15 | Gate-controlled charge-doping of a Mott insulator in Graphene/?-RuCl3 Heterostructures | Zhou, Boyi; Balgley, Jesse; Kelley, Paula; Mandrus, David; Henriksen, Erik | Here we study the electronic transport of van der Waals heterostructure devices containing thin a-RuCl3 flakes in contact with monolayer graphene Hall bars. | Session 2: 2D Materials (Metals, Superconductors, and Correlated Materials) — Magnetism |
| 16 | Ab initio mismatched interface theory of graphene on ?-RuCl3: doping and magnetism | Gerber, Eli; Yao, Yuan; Arias, Tomas; Kim, Eun-Ah | We propose a general strategy for studying such interfaces, “mismatched interface theory,” and apply it to a ?-RuCl 3-graphene heterostructure in which there is significant lattice mismatch between the two crystals. | Session 2: 2D Materials (Metals, Superconductors, and Correlated Materials) — Magnetism |
| 17 | Crystal Structure Reconstruction on Surface of Quantum Spin Liquid Candidate: ?-RuCl3 | Dai, Zhongwei; Yu, Jie-Xiang; Zhou, Boyi; Tenney, Samuel; Lampen-Kelley, Paige; Mandrus, David; Henriksen, Erik; Sadowski, Jerzy; Pohl, Karsten; Zang, Jiadong | We used a unique surface sensitive technique, low energy electron microscopy (LEEM), combined with dynamical selected-area low energy electron diffraction (?LEED- IV) to study the 2D crystal structure of ?-RuCl 3. | Session 2: 2D Materials (Metals, Superconductors, and Correlated Materials) — Magnetism |
| 18 | Probing magnetism in atomically thin van der Waals insulators using electron tunneling | MacNeill, David | In this talk, I will discuss the use of electron tunneling through ultrathin magnetic insulators as a probe of their magnetic ground state and excitations [1]. | Session 2: 2D Materials (Metals, Superconductors, and Correlated Materials) — Magnetism |
| 19 | Increased Interlayer Exchange in the Layered Magnetic Insulator CrCl3 | Klein, Dahlia; MacNeill, David; Song, Qian; Xu, Mingyu; Ribeiro, Raquel; Canfield, Paul; Comin, Riccardo; Jarillo-Herrero, Pablo | By measuring the magnetoresistance in spin filter magnetic tunnel junctions, we measure the interlayer exchange in CrCl 3 barriers two to four layers in thickness and find that it is greatly increased in thin films compared to bulk. | Session 2: 2D Materials (Metals, Superconductors, and Correlated Materials) — Magnetism |
| 20 | Microscopic understanding of magnetic interactions in bilayer CrI3 | Jang, Seung Woo; Jeong, Min Yong; Yoon, Hongkee; Ryee, Siheon; Han, Myung Joon | We performed a detailed microscopic analysis of the inter-layer magnetic couplings for bilayer CrI 3. | Session 2: 2D Materials (Metals, Superconductors, and Correlated Materials) — Magnetism |
| 21 | Pressure induced ferromagnetism and magnetic anisotropy in bilayer CrI3 | subhan, fazle; Hong, Jisang | We investigated the magnetic properties of bilayer CrI3 using density functional approach. | Session 2: 2D Materials (Metals, Superconductors, and Correlated Materials) — Magnetism |
| 22 | Transport properties of van der Waals heterostructures based on two-dimensional magnet | Matsuoka, Hideki; Nakano, Masaki; Iwasa, Yoshihiro | Here we created magnetic vdW heterostructures by molecular-beam epitaxy, where a new type of 2D magnet, vanadium selenide epitaxial thin film, was incorporated. | Session 2: 2D Materials (Metals, Superconductors, and Correlated Materials) — Magnetism |
| 23 | Toward Quantum Optoelectronics and Optomechanics in Flatland | Park, Hongkun | In particular, I will describe how we prepare high-quality van der Waals heterostructures that feature spatially homogeneous, nearly lifetime-broadened excitons. | Session 3: 2D Materials — Optical Properties |
| 24 | THz Electrical Response of Graphene Antennas | Carey, David; Dashti, Mojtaba | Here the GHz to THz response of graphene is investigated as a proof of principle concept for use as an ultrawide band patch antenna as part of a graphene based near-field communication system. | Session 3: 2D Materials — Optical Properties |
| 25 | Attosecond Dynamics and Electronic Rehybridization in MoS2 | Monti, Oliver; Eads, Calley; zachritz, sara; Maughan, Bret; nordlund, dennis | We show that increased electron density in the conduction band leads to orbital rehybridization, which is the source of the observed layer decoupling. | Session 3: 2D Materials — Optical Properties |
| 26 | Quantum optics with atomically thin materials | Vamivakas, Nick | In this talk I will describe some approaches that leverage atomically thin semiconductors, and other two-dimensional materials, assembled in layered van der Waals heterostructures for applications in these areas. | Session 3: 2D Materials — Optical Properties |
| 27 | Tunable nonlinearity in a Graphene-Silicon Nitride hybrid resonator | Singh, Rajan; Sarkar, Arnab; Guria, Chitres; Nicholl, Ryan; Chakraborty, Sagar; Bolotin, Kirill; Ghosh, Saikat | Here we propose a hybrid system that integrates high Q of SiNx resonator with nonlinearity of graphene resonator. | Session 3: 2D Materials — Optical Properties |
| 28 | Ambient effects on hysteresis and photogating in MoS2 photodetectors | Han, Peize; Adler, Eli; Liu, Yijing; St. Marie, Luke; El Fatimy, A; Barbara, Paola | Here we study the effect of ambient conditions on the performance of MoS 2 photodetectors through vacuum pumping and illumination. | Session 3: 2D Materials — Optical Properties |
| 29 | Temperature Dependence of the Photoconduction in the Few-Layered ReSe2 Field-Effect Transistor | Patil, Prasanna; Wasala, Milinda; Alkhaldi, Rana; Weber, Lincoln; Kovi, Kiran; Chakrabarti, Bhaswar; Rhodes, Daniel; Rosenmann, Daniel; Divan, Ralu; Sumant, Anirudha; Balicas, Luis; Pradhan, Nihar; Talapatra, Saikat | We will present the photo response of the few-layered ReSe 2 field-effect transistor fabricated using mechanically exfoliated crystals grown using the chemical vapor transport method. | Session 3: 2D Materials — Optical Properties |
| 30 | Temperature dependent electrical and photoconductive properties of few-layer Indium Selenide (InSe) FETs | Wasala, Milinda; Patil, Prasanna; Ghosh, Sujoy; Alkhaldi, Rana; Weber, Lincoln; Lei, Sidong; Sirikumara, Hansika; Jayasekera, Thushari; Vajtai, Robert; Ajayan, Pulickel; Talapatra, Saikat | These key findings and temperature dependent photoconductivity study will be presented and discussed. | Session 3: 2D Materials — Optical Properties |
| 31 | Electric field effect studies of atomically thin crystals of ferroelectric In2Se3 | Rodriguez, Justin; Chen, Yixuan; Lee, Seng Huat; Fujisawa, Kazunori; Zhang, Tianyi; Terrones, Mauricio; Murray, William; Liu, Zhiwen; Liu, Ying | We found that the crystals are easily gated to possess a finite electrical conductivity characterized by thermally activated behavior. | Session 3: 2D Materials — Optical Properties |
| 32 | Crossover between Photochemical and Photothermal Oxidations of Atomically Thin CrPS4 | Kim, Su Hyeon; Ryu, Sunmin | Based on various control experiments over photon energy, power density and humidity, we propose that the low-power photoreaction of CrPS 4 is a one-photon photochemical oxidation mediated by CrPS 4-sensitized generation of singlet O 2 and is switched over to a photothermal oxidation in a high-power regime. | Session 3: 2D Materials — Optical Properties |
| 33 | Spectroscopic Characterization of Interlayer Contaminants within van der Waals Heterostructures | Schwartz, Jeffrey; Chuang, Hsun-Jen; Rosenberger, Matthew; Jonker, Berend; Centrone, Andrea | Here, we use a photothermal induced resonance technique to obtain nanoscale infrared spectra and maps of the contamination with ~20 nm spatial resolution. | Session 3: 2D Materials — Optical Properties |
| 34 | Twisted Graphene Superlattices: Superconductivity, Electron Correlations and Beyond | Cao, Yuan; Rodan Legrain, Daniel; Rubies-Bigorda, Oriol; Fatemi, Valla; Fang, Shiang; Watanabe, Kenji; Taniguchi, Takashi; Kaxiras, Efthimios; Jarillo-Herrero, Pablo | In this talk I will present a new platform to investigate strongly correlated physics, based on graphene moir� superlattices. | Session 4: 2D Materials Twistronics: Correlations and Moir� Physics |
| 35 | Tuning flat bands in twisted bilayer graphene with pressure | Yankowitz, Matthew | Here we demonstrate the capability to vary the bandwidth at fixed rotation angle by using hydrostatic pressure to modify the interlayer coupling [1]. | Session 4: 2D Materials Twistronics: Correlations and Moir� Physics |
| 36 | Topology and Correlations in Magic Angle Bilayer Graphene | Vishwanath, Ashvin | We will discuss our theoretical efforts to derive faithful tight binding models that captures both the symmetry and topology of the flat bands, as well as their energetics. | Session 4: 2D Materials Twistronics: Correlations and Moir� Physics |
| 37 | Topologically Protected Helical States in Minimally Twisted Bilayer Graphene | LeRoy, Brian | Using scanning tunneling microscopy and spectroscopy, we have investigated these minimally twisted bilayer graphene heterostructures. | Session 4: 2D Materials Twistronics: Correlations and Moir� Physics |
| 38 | Quantum Simulation and Many-Body Physics in Moir� Bilayers | Wu, Fengcheng | Motivated by the observed superconductivity, I will present a candidate theory of phonon-mediated superconductivity in TBLG [4]. | Session 4: 2D Materials Twistronics: Correlations and Moir� Physics |
| 39 | Experimentally Observed Electronic Coupling between Natively Functionalized 2-D layers of Ti3C2Tx MXenes | Lioi, David; Kennedy, William; Nepal, Dhriti; Vaia, Richard; Heckler, James; Neher, Gregory; Pachter, Ruth | Here we present spectroscopic observations of the electronic coupling in few layered MXenes with the topography being verified by atomic force microscopy (AFM). | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 40 | Valley-dependent impurity scattering in ?-T3 ??lattices and specific role of Lorentz forces | Huang, Danhong; Iurov, Andrii; Lai, Ying-Cheng; Xu, Hongya; Gumbs, Godfrey | We have obtained the angular distribution of extrinsic skew-scattering currents related to a set of randomly-distributed impurities in ?-T 3 lattices using the Boltzmann moment equations. | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 41 | Tuning the opto electronic properties of ultrasmooth large area rGO films grown via Pulsed laser deposition (PLD) technique | Juvaid, Muhammed | We present the growth of large area ultra-smooth reduced graphene oxide (rGO) thin films on a four inch wafer via beam scanning mode of Pulsed laser deposition technique. | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 42 | Intercalation of Cu and Ru beneath the top graphene layer of graphite surfaces | Han, Yong; Lii-Rosales, Ann; Tringides, Michael; Evans, James; Thiel, Patricia | We present an extensive study of energetics using density functional theory to compare stabilities of a wide variety of configurations of atoms, clusters, and layers of Cu and Ru on/under the graphite surface. | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 43 | Electrical and mechanical properties of h-BN nanoplates on Ir(111) studied by STM and NC-AFM | Liu, Mengxi; Qiu, Xiaohui | Here, we investigate the electrical and mechanical properties of h-BN nanoplate grown on Ir(111) using a combined approach of scanning tunneling microscopy (STM), noncontact atomic force microscopy (nc-AFM) and density functional theory (DFT) calculations. | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 44 | Scanning tunneling spectroscopy study of incorporated Al atoms in Si(100) substrate | Kim, Hyun-soo; Ramanayaka, Aruna; Tang, Ke; Pomeroy, Joshua | We have studied the structures and electrical properties of incorporated Al atoms in Si(100) using scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS) at room temperature in ultra-high vacuum. | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 45 | Discovery of a New Layered Crystal, Hexagonal Beryllium Oxide | Wang, Lifen; Liu, Lei; Chen, Ji; Gao, Shang-Peng; Gu, Gong | Here, using high-resolution transmission electron microscopy and electron energy loss spectroscopy, we show that BeO crystallizes in the sp 2-coordinated, layered structure in liquid cells formed by sheets of graphene. | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 46 | A Study of Vertical Transport in Silicon-Graphene Junction | Lei, Sidong; Zhu, Xiaodan; Tsai, Shin-Hung; Zhang, Xiang; Yin, Gen; torres, carlos; Navabi, Aryan; Jin, Zehua; Qasem, Hussam; Vajtai, Robert; Lake, Roger; Ajayan, Pulickel; Wang, Kang | In this report, we explore the important roles of single layer graphene in the vertical tunneling process as a tunneling barrier. | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 47 | Construction of graphene/silicene heterostructure by Si intercalation | Li, Geng | Here we report the fabrication of graphene/silicene van der Waals heterostructures by silicon intercalation. | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 48 | The mechanism for the stabilization and surfactant properties of epitaxial silicene | Curcella, Alberto; bernard, romain; Borensztein, Yves; Lazzeri, Michele; prevot, geoffroy | Using real-time in situ scanning tunneling microscopy and density functional theory simulations, we have studied the growth of Si films on Ag(111) for coverages above the silicene monolayer, evidencing the existence of metastable phases and an original growth mechanism. | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 49 | Ab initio study of 2D plasmon enhancement in alkali intercalated graphene on metallic substrates | Despoja, Vito; Marusic, Leonardo | We present the results of a theoretical simulation of alkali atoms intercalated between the graphene and a metallic substrate (e.g. Ir(111) or Al(111)) and forming a periodic superlattice, which causes a huge enhancement of DP and AP. | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 50 | First-Principles investigation of Epitaxial Pt Layer on Graphene | Choi, Ji Il; Alamgir, Faisal; Jang, Seung Soon | In this study, we present a computational research on the unique architecture of epitaxial platinum (mono/multi) layers grown on graphene (Pt_ML/GR), in support of remarkable recent progress in the synthesis of these architectures in simple cubic-like (SC-L) and face-centered cubic-like (FCC-L) phases on the graphene. | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 51 | Two dimensional phases of Ag on Ge(111): insights from first-principles calculations | Acharya, Shree Ram; Le, Duy; Chiang, Shirley; Fong, Ching; Rahman, Talat | In this comparative study of clean Ge(111) with (1×1), reconstructed c(2×8) and (2×1) geometries, and of sub-monolayer Ag covered Ge(111) with (4×4), (v3xv3)R30 and (1×1) overlayers, we find that Ge atoms on the surface prefer three-fold hollow sites and Ag adatoms prefer to form triangular structures. | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 52 | Liquid crystal (5CB) adsorption on two-dimensional materials | Brown, Paul; Fischer, Sean; Kolacz, Jakub; Spillmann, Christopher; Gunlycke, Daniel | In particular, we present electronic ground state properties obtained using density functional theory with nonlocal van der Waals corrections that reveal subtle orientational, energetic, and electronic properties for the characterization of local mesogen-substrate interactions, whereby the anchoring of liquid crystal can be understood more generally across atomically flat surfaces. | Session 5: 2D Materials and Graphene: Surface and Interface Connections |
| 53 | A first-principles study of the ferroelectricity of two-dimensional IV-VI group compounds | Xiong, Fen; Zhang, Xilin; Lin, Zhen; Chen, Yue | In this work, we focus on the theoretical calculations of the stability and ferroelectricity of 2D IV-VI compounds based on density functional theory (DFT) and the Berry phase method. | Session 6: 2D Materials and Heterostructures |
| 54 | Van der Waals induced rippling and anisotropy in the natural superlattice Franckeite | San-Jose, Pablo; Frisenda, Riccardo; Urban, Ioanna; Baranowski, Michal; Papadopoulos, Nikos; van der Zant, Herre; S�nchez-Santolino, Gabriel; Garc�a-Hern�ndez, Mar; Plochocka, Paulina; Castellanos-Gomez, Andres | Here we show, using continuum elasticity theory, that rippling is ultimately the result of a mechanical instability produced by a one-dimensional moir� superlattice forming in Franckeite’s interlayer alignment. | Session 6: 2D Materials and Heterostructures |
| 55 | Layer Dependent MCD on Van der Waal-like 2D ferromagnetism | Chiu, Yu-Che; Lu, Zhenguang; Rhodes, Daniel; Jiang, Yuxuan; Smirnov, Dmitry; Hone, James; Balicas, Luis | Therefore, In order to study the presence of magnetism and to understand the role spin-phonon interaction, we performed layer-dependent magnetization measurements via the magnetic circular dichroism (MCD) and Raman spectroscopy at different Ts. | Session 6: 2D Materials and Heterostructures |
| 56 | Strain induced half-semiconductor to half-metallic transition in 2D magnet CrI3 : A DFT approach | Mukherjee, Tista; Chowdhury, Suman; Jana, Debnarayan; Lew Yan Voon, Lok | In this work, compressive and tensile strain (uniaxial as well as biaxial) upto 12% have been applied to study the variation of the electronic and magnetic properties of CrI 3 employing density functional theory in (LDA+U) exchange correlation scheme. | Session 6: 2D Materials and Heterostructures |
| 57 | Emission of Geometrically Modulated Monolayer Semiconductors | Chen, I-Tung; Chen, Chun An; Yang, Tung-Han; Chiu, Kuan-Chang; Lai, Ying-Yu; Lee, Yi-Hsien | Emission of Geometrically Modulated Monolayer Semiconductors | Session 6: 2D Materials and Heterostructures |
| 58 | Barrier tunneling for the dice lattice under linearly-polarized light | Dahal, Dipendra; Gumbs, Godfrey; Iurov, Andrii; Huang, Danhong | We have investigated electron tunneling across a square barrier under external off-resonance dress- ing fields in ?-T 3 lattices with variable interatomic coupling parameter ? which yields the dice lattice limit (or T 3 material) when ? = 1. | Session 6: 2D Materials and Heterostructures |
| 59 | Nonreciprocity in �motion� | Morgado, Tiago; Silveirinha, Mario | In particular, we will show that a graphene sheet biased with a direct electric current is a very promising solution to break the Lorentz reciprocity and have a broadband regime of unidirectional propagation of surface plasmons protected against backscattering from obstacles and imperfections [3]. | Session 6: 2D Materials and Heterostructures |
| 60 | Twisted-bilayer graphene devices fabricated with polymer-free graphene | Lyu, Rui; Wang, Dongying; Codecido, Emilio; Watanabe, Kenji; Taniguchi, Takashi; Lau, Chun Ning; Bockrath, Marc | We will present our recent work in fabricating twisted bilayer graphene heterostructures. | Session 6: 2D Materials and Heterostructures |
| 61 | Electronic and Magnetic Properties of Patterned Hydrogenated Graphene: A First-principles Study | Wu, Bi-Ru | We found the bare carbon chains and embedded GQDs can interact with each other. | Session 6: 2D Materials and Heterostructures |
| 62 | Transport measurement of twisted bilayer-bilayer graphene | Dinh, Thao; Zheng, Zhiren; Ma, Qiong; Xu, Suyang; Watanabe, Kenji; Taniguchi, Takashi; Jarillo-Herrero, Pablo; Gedik, Nuh | In this work, we explore such broken symmetry effect in a twisted bilayer-bilayer graphene structure. | Session 6: 2D Materials and Heterostructures |
| 63 | Inter-Landau-level Andreev Reflection at the Dirac Point in a Graphene Quantum Hall State Coupled to a NbSe2 Superconductor | SAHU, MANAS; Liu, Xin; Paul, Arup; Das, Sourin; Raychaudhuri, Pratap; Jain, Jainendra; Das, Anindya | As a step toward that goal, we report observation of Andreev reflection at the junction of a quantum Hall edge state in a single layer graphene and a quasi-twodimensional niobium diselenide (NbSe 2) superconductor. | Session 6: 2D Materials and Heterostructures |
| 64 | Band structure tuning of doped Graphene/hBN heterostructure | Zhang, Hongyun; Wang, Eryin; Wang, Shuopei; Lu, Xiaobo; Denlinger, Jonathan; Fedotov, Alexei; Taniguchi, Takashi; Zhang, Guangyu; Zhou, Shuyun | Here we report our recent ARPES progress on the electronic band structure of doped graphene/BN, which shows intriguing band structure engineering of both the valence and conduction bands. | Session 6: 2D Materials and Heterostructures |
| 65 | Nonequilibrium noise measurements using hBN tunnel barriers | Zhao, Xuanhan; Zhou, Panpan; Stevens, Loah; Natelson, Douglas | Here we report nonequilibrium charge current noise measurements in a variety of tunnel junctions prepared using different ways of transferring hBN as monolayer tunnel barriers. | Session 6: 2D Materials and Heterostructures |
| 66 | Imaging non-circular cyclotron orbits in a graphene/hBN superlattice | Barnard, Arthur; Sharpe, Aaron; Wallbank, John; Watanabe, Kenji; Taniguchi, Takashi; Falko, Vladimir; Goldhaber-Gordon, David | We study a hall-bar device with collimating contacts and use a home-built multi-terminal lock-in technique to efficiently determine where electrons are electrostatically deflected by the SGM tip. | Session 6: 2D Materials and Heterostructures |
| 67 | THz spectroscopy of graphene coupled to LaAlO3/SrTiO3 nanoscale junctions | Sutton, Erin; Chen, Lu; Li, Jianan; Guo, Qing; Lee, Hyungwoo; Lee, Jungwoo; Eom, Chang-Beom; Irvin, Patrick; Levy, Jeremy | We investigate the gate-dependent optical response of graphene using the broadband nonlinear generation and detection capabilities of nanoscale junctions created at the LaAlO3/SrTiO3 interface [1]. | Session 6: 2D Materials and Heterostructures |
| 68 | Relative stability and magnetic ground state of all stacking patterns in bilayer chromium trihalides from first principles | Gibertini, Marco | Here, we address this controversy by studying bilayers of these materials using density functional theory. | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 69 | C1 vacancy in pentagraphene | Manjanath, Aaditya; Hsu, Chao-Ping; Kawazoe, Yoshiyuki | Here, we explore the C1 vacancy in PG using first-principles density functional calculations. | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 70 | Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr 3 | Ghazaryan, Davit; Greenaway, Mark; Wang, Zihao; Vera Marun, Ivan; Yin, Jun; Morozov, Serge; Lichtenstein, Alexander; Katsnelson, Mikhail; Mishchenko, Artem; Eaves, Laurence; Geim, Andre; Novoselov, Kostya; Misra, Abhishek | I will report on a few layers of exfoliated CrBr 3 (2-6 layers) that are also ferromagnetic by fabricating and characterising functional tunnelling devices where the CrBr 3 layer is sandwiched in between two graphene electrodes. | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 71 | Spin texture of a quasi-two-dimensional ferromagnetic kagome metal | Ma, Xiao-Ming; Wang, Xiao-Bo; Hao, Yu-Jie; Feng, Yue; Yang, Jie-Ming; Han, Tian-Xiong; Shen, Hui-Wen; Xu, Yi-Ming; Song, Rong-Rong; Ding, Hong; Liu, Chang | In this talk, we report our study on the spin texture of Fe 3Sn 2, using both spin-resolved ARPES and DFT calculations. | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 72 | Bulk electronic and local magnetic properties of semiconducting 2H-MoTe2 | Krieger, Jonas; Schr�ter, Niels; Biswas, P. K.; Chatzichristos, Aris; Fujimoto, Derek; Holenstein, Stefan; Karner, Victoria; McFadden, Ryan; Ticknor, John; MacFarlane, W; Kiefl, Robert; Balakrishnan, Geetha; Strocov, Vladimir; Salman, Zaher | Here we present the full 3D band structure of 2H-MoTe 2, determined with soft X-ray ARPES. | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 73 | Many-body quantum Monte Carlo study of 2D materials: cohesion and band gap in single-layer phosphorene | Frank, Tobias; Derian, Ren?; Tok�r, Kamil; Mitas, Lubos; Fabian, Jaroslav; Stich, Ivan | Using the recently uncovered universal scaling between the exciton binding energy and ? f, we predict the optical gap of about 1.7 eV that can be directly related to experiments. | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 74 | Interacting Rydberg Exciton-Polaritons in Two-Dimensional Transition Metal Dichalcogenides | Gu, Jie; Waldecker, Lutz; Rhodes, Daniel; Boehmke, Alexandra; Koots, Rian; Raja, Archana; Hone, James; Heinz, Tony; Menon, Vinod | Here we demonstrate the formation of Rydberg exciton-polaritons in monolayer WSe2 embedded in a microcavity. | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 75 | Room temperature dynamical control and electroluminescence from microcavity polaritons in monolayer transitional metal dichalcogenides | Chakraborty, Biswanath; Gu, Jie; Sun, Zheng; KHATONIAR, MANDEEP; BUSHATI, REZLIND; Boehmke, Alexandra; Koots, Rian; Menon, Vinod | We demonstrate modulation of exciton-photon interaction in strong coupling regime showing polariton branches at room temperature in monolayer WS 2 field effect transistor embedded inside a microcavity. | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 76 | Collective electronic properties of an ?-T3 lattice at finite temperatures | Iurov, Andrii; Gumbs, Godfrey; Huang, Danhong; Zhemchuzhna, Liubov | We have thoroughly investigated the role of the coupling strength parameter $\alpha$ for the extra atom at the center of the honeycomb lattice, which in our case could be continuously varied from 0 (graphene) to 1 (the dice lattice). | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 77 | Probing Moir� Interlayer Exciton States in van der Waals Heterostructures | Jin, Chenhao; Regan, Emma; Wang, Danqing; Utama, Iqbal; Cain, Jeffrey; Qin, Ying; Shen, Yuxia; Zheng, Zhiren; Watanabe, Kenji; Taniguchi, Takashi; Tongay, Sefaattin; Zettl, Alex; Wang, Feng | In this talk, I will discuss our effort to observe distinct interlayer exciton states and to probe the possible effects of the moir� angular momentum on the interlayer exciton states. | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 78 | Controlling Optical Properties of Electron Hole Plasma in Monolayer Transition Metal Dichalcogenides | Younts, Robert | Controlling Optical Properties of Electron Hole Plasma in Monolayer Transition Metal Dichalcogenides | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 79 | Excitonic and lattice contributions to the charge density wave in 1T-TiSe2 revealed by a relaxation bottleneck | Sayers, Charles; Hedayat, Hamoon; Bugini, Davide; Dallera, Claudia; Wolverson, Daniel; Batten, Tim; Karbassi, Sara; Friedemann, Sven; Cerullo, Giulio; Van Wezel, Jasper; Clark, Stephen; Carpene, Ettore; Da Como, Enrico | Using time- and angle-resolved photoemission spectroscopy (TR-ARPES), we have studied the femtosecond dynamics of the charge density wave (CDW) in 1 T-TiSe 2. | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 80 | Elecromagnetic Fileld dependendent Coulomb renormalisation in Dirac Materials | Leone, Di Mauro Villari; Galbraith, Ian; Biancalana, Fabio | starting from the quantisation of the instantaneous Dirac field we include Coulomb interactions and provide a fully renormalised version of the DBEs. | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 81 | Excited excitonic states in second harmonic spectra of 2D materials with ab-initio many-body methods | Beach, Kory; Lucking, Michael; Terrones, Humberto; Brongersma, Mark; Asian, Ozgur | Excited excitonic states in second harmonic spectra of 2D materials with ab-initio many-body methods | Session 7: 2D Materials: Magnetism and Optoelectronics |
| 82 | Scanning Probe Microscopy of Inhomogeneous States in 2D Materials | Pabbi, Lavish; Banerjee, Riju; Granzier-Nakajima, Tomotaroh; Binion, Anna; Terrones, Mauricio; Hudson, Eric | As one example, I will here present results of recent STM measurements of single-layer graphene on copper, and on the graphene nano-ribbons that form when draped over copper step edges. | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 83 | Isotropic charge screening of the anisotropic black phosphorus revealed by potassium adatoms | Tian, Zhen; Xue, Jiamin | To this end, we use scanning tunneling microscopy to study black phosphorus with potassium adatoms. | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 84 | Substrate screening effects on the quasiparticle band gap and defect charge transition levels in MoS2. | Naik, Mit; Jain, Manish | We find a giant renormalization to the free-standing quasiparticle band gap in the presence of metallic substrates, in agreement with recent scanning tunneling spectroscopy and photoluminescence experiments. | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 85 | Scanning Tunneling Microscopy Study of Epitaxial Growth of Wafer Scale, Single Atomic Sheet Honeycomb BeO Two-dimensional Insulator | Holbrook, Madisen; Zhang, Hui; Cheng, Fei; Nam, Hyoungdo; Liu, Mengke; Pan, Chi-Ruei; West, Damien; Zhang, Shengbai; Chou, Mei-Yin; Shih, Chih-Kang | We report the discovery of a novel 2D insulator comprised of a single atomic sheet honeycomb structure BeO, though its bulk counterpart has a wurtzite structure. | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 86 | The Band Structure and Contact Issues of Quasi One Dimensional TiS3 | Gilbert, Simeon; Yi, Hemian; Komesu, Takashi; Lipatov, Alexey; Hao, Guanhua; Yost, Andrew; Sinitskii, Alexander; Avila, Jose; Chen, Chaoyu; Asensio, Maria; Dowben, Peter | The Band Structure and Contact Issues of Quasi One Dimensional TiS3 | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 87 | Bulk compressibility measurements of WSe2 heterostructures | Shi, Qianhui; Shih, En-Min; Rhodes, Daniel; Kim, Bumho; Taniguchi, Takashi; Watanabe, Kenji; Hone, James; Dean, Cory | Here we report on magneto-capacitance measurements on WSe 2 heterostructures which probe the bulk electronic compressibility. | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 88 | Flavor Symmetry and Ferroelectric Nematics in Transition Metal Dichalcogenides | Cheung, Patrick; Bao, Zhi-qiang; Zhang, Fan | We study the flavor SU(3) symmetry breaking when each Landau level triplet is one-third filled or empty and predict that a pure flavor nematic phase and a flavorless charge-density-wave phase will occur respectively below and above a critical magnetic field. | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 89 | ARPES microscopy of hBN flakes | Koch, Roland; Katoch, Jyoti; Moser, Simon; Schwarz, Daniel; Kawakami, Roland; Bostwick, Aaron; Rotenberg, Eli; Jozwiak, Chris; Ulstrup, Soren | We will present the full valence-band (VB) electronic structure of micrometer-sized exfoliated flakes of hBN using angle-resolved photoemission spectroscopy with micrometer and nanometer spatial resolution. | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 90 | Large-Area Epitaxial Growth of Curvature-Stabilized ABC Trilayer Graphene with Tunable Band Gap | Gao, Zhaoli; Wang, Sheng; Berry, Joel; Zhang, Qicheng; Gebhardt, Julian; Parkin, William; Avila, Jose; Yi, Hemian; Chen, Chaoyu; Hurtado Parra, Sebastian; Drndi?, Marija; Rappe, Andrew; Srolovitz, David; Kikkawa, J.; Luo, Zhengtang; Asensio, Maria; Wang, Feng; Johnson, Alan | Here we present a scalable approach to epitaxial TLG growth via chemical vapor deposition that reliably enhances the fraction and size of ABC stacked TLG domains compared to other methods. | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 91 | Spin and valley degree of freedom in a bulk massless-Dirac electron system, ?-(BEDT-TTF)2I3 under magnetic fields | Miyagawa, Kazuya; Manabu, Matsuno; Hirata, Michihiro; Masafumi, Tamura; Kanoda, Kazushi | Spin and valley degree of freedom in a bulk massless-Dirac electron system, ?-(BEDT-TTF)2I3 under magnetic fields | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 92 | Strain-dependent ab-initio tight binding Hamiltonians for T-type transition metal dichalcogenides | Larson, Daniel; Fang, Shiang; Chen, Wei; Coulter, Jennifer; Torrisi, Steven; Carr, Stephen; Kaxiras, Efthimios | Using Density Functional Theory followed by a Wannier transformation we extract the strain-dependent tight binding parameters for single-layer TMDs. | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 93 | Interplay between p- and d- orbitals yields multiple Dirac states in two-dimensional ZrB2 and CrB4 | Lopez Bezanilla, Alejandro | Interplay between p- and d- orbitals yields multiple Dirac states in two-dimensional ZrB2 and CrB4 | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 94 | The effect of the adsorption of the toxic hydrazine on the electronic structure of the WS2 monolayer: the first principle calculations | Musa, Md Rajib khan; Zhang, Congyan; Alruqi, Adel; Sumanasekera, Gamini; Yu, Ming | The effect of the adsorption of the toxic hydrazine on the electronic structure of the WS2 monolayer: the first principle calculations | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 95 | Symmetry controlled adsorption of di-iodobenzene on MoS2 | Hooshmand Gharehbagh, Zahra; Evans, Prescott; Le, Duy; Dowben, Peter; Rahman, Talat | We have applied van der Waals corrected density functional theory based calculations to understand the subtleties in the electronic structure and geometry of adsorption of these three di-iodobenzene isomers on MoS 2(0001). | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 96 | Portable Surface-Enhanced Raman Spectroscopy of Pyridine and Diazines on MoS2 | Hart, Robert; Ambardar, Sharad; Sahoo, Prasana; Voronine, Dmitri | We investigate the effects of the addition of few-layer molybdenum disulfide (MoS 2) nanocrystals on the enhancement of Raman signals of pyridine and its diazine derivatives. | Session 8: 2D Materials: Probing and Tuning Electronic Structure |
| 97 | First-Principles Electronic Structure Investigation of 2D Twisted Bilayers | Kumar, Ishaan; Luo, Xuan | We utilize the first-principles method to calculate both band structures and density of states (DOS) for various sized 2D twisted bilayers of Graphene, BN and MoS 2. | Session 9: 2D Materials: Stack and Twist Theory |
| 98 | A multi-scale numerical approach to model two-dimensional layered materials | Fang, Shiang; Carr, Stephen; Zhu, Ziyan; Kaxiras, Efthimios | We develop a multi-scale numerical approach to model these layers and their heterostructures. | Session 9: 2D Materials: Stack and Twist Theory |
| 99 | Gate-Tunable Topological Flat Bands in Trilayer Graphene-Boron Nitride Moir� Superlattices | Chittari, Bheema Lingam; Chen, Guorui; Zhang, Yuanbo; Wang, Feng; Jung, Jeil | We investigate the electronic structure of the flat bands induced by moir� superlattices and electric fields in nearly aligned ABC trilayer graphene-boron nitride interfaces where Coulomb effects can lead to correlated gapped phases. | Session 9: 2D Materials: Stack and Twist Theory |
| 100 | Composition and Stacking Dependent Topology in Bilayers from the Graphene Family | Woods, Lilia; Popescu, Adrian; Rodriguez Lopez, Pablo | We investigate from first-principles the electronic and structural properties of silicene, germanene, and stanene bilayers. | Session 9: 2D Materials: Stack and Twist Theory |
| 101 | Ultraflat bands and shear solitons in Moir� patterns of twisted bilayer transition metal dichalcogenides | Naik, Mit; Jain, Manish | We extend our analysis for twisted bilayer MoS 2 to show that flat bands can occur at the valence band edge of twisted bilayer WS 2, MoSe 2 and WSe 2 as well. | Session 9: 2D Materials: Stack and Twist Theory |
| 102 | Topological phases and twisting of graphene on a dichalcogenide monolayer | Alsharari, Abdulrhman; Asmar, Mahmoud; Ulloa, Sergio | We show that the misaligned system can also exhibit multiple different topological phases depending on the relative twist angle and applied gate voltages between the layers[1]. | Session 9: 2D Materials: Stack and Twist Theory |
| 103 | Band nesting and valley exciton in monolayer MoS2 | Bieniek, Maciej; Szulakowska, Ludmila; Hawrylak, Pawel | We report the effect of band nesting on single valley excitons in monolayer MoS 2 . | Session 9: 2D Materials: Stack and Twist Theory |
| 104 | A metal-insulator transition by hole doping in boron triangular Kagome lattice | Han, Woo Hyun; Kim, Sunghyun; Lee, In-Ho; Chang, Kee Joo | In this work, through first-principles calculations, we investigate the electronic structure and structural stability of a paritally-filled flat band in boron triangular Kagome lattice which has been recently predicted. | Session 9: 2D Materials: Stack and Twist Theory |
| 105 | Landau levels in bilayer transition metal dichalcogenides | Zheng, Peng Peng; Zhang, Fan | To understand the underlaying mechanics, we develop an effective model accurate within the experimental range to model and analyze the results. | Session 9: 2D Materials: Stack and Twist Theory |
| 106 | Tunable spin-polarized edge currents in proximitized transition metal dichalcogenides | Cortes, Natalia; Avalos Ovando, Oscar; Rosales, Luis; Orellana, Pedro; Ulloa, Sergio | We explore proximity-induced ferromagnetism on transition metal dichalcogenide (TMD), focusing on molybdenum ditelluride (MoTe 2) ribbons with zigzag edges, deposited on ferromagnetic europium oxide (EuO). | Session 9: 2D Materials: Stack and Twist Theory |
| 107 | Tight-binding modeling of bilayer TMDCs with lithium intercalation | Lu, Zheyu; Carr, Stephen; Larson, Daniel; Kaxiras, Efthimios | We present an ab-initio tight-binding modeling of bilayer TMDCs with lithium intercalation based on the wannier transformation of first-principles calculations. | Session 9: 2D Materials: Stack and Twist Theory |
| 108 | Properties of doubly-aligned graphene/boron nitride heterostructures | Finney, Nathan; Yankowitz, Matthew; Muraleetharan, Lithurshanaa; Watanabe, Kenji; Taniguchi, Takashi; Dean, Cory; Hone, James | We investigate the behavior of BN-encapsulated graphene in which the bottom BN is aligned to the graphene and the top BN can be rotated freely. | Session 9: 2D Materials: Stack and Twist Theory |
| 109 | Modifying the Band Structure of Hexagonal Boron Nitride with Metal Electrodes | Dogan, Mehmet; Cohen, Marvin | In this DFT-based study, we propose an alternate scheme for tuning the electronic states in BN. | Session 9: 2D Materials: Stack and Twist Theory |
| 110 | Exchange driven dimerization, band gap, and magnetism of diamond(111) surface from first principles | Pamuk, Betul; Calandra, Matteo | Exchange driven dimerization, band gap, and magnetism of diamond(111) surface from first principles | Session 9: 2D Materials: Stack and Twist Theory |
| 111 | Nano-Makisu: Two-Dimensional Carbon derived from One-Dimensional Carbon | Zhao, Lei; Liu, Wei; Hu, Tao; Khodagholian, Dalar; Gu, FengLong; Lin, Hai-Qing; Zheng, Yonghao; Miao, Maosheng | Herein, we report first-principles calculations on novel two-dimensional carbon allotropes that are formed from embedding single-walled carbon nanotubes (SWNTs) within graphene sheets. | Session 9: 2D Materials: Stack and Twist Theory |
| 112 | Entropy changes and caloric effects driven by charge transfer: Application to YbInCu4 | De Oliveira, Nilson; Troper, Am�s | In this work, we propose a new physical mechanism based on charge transfer to produce large entropy and caloric effects even in non magnetic solid materials. | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 113 | High field magnetostriction and magnetization of uranium monoantimonide single crystals | Ding, Xiaxin; Shrestha, Keshav; Antonio, Daniel; Weickert, Franziska; Jaime, Marcelo; Harrison, Neil; Salamon, Myron; Durakiewicz, Tomasz; Smith, James; Gofryk, Krzysztof | During the talk we will present results of our recent magnetization and magnetostriction measurements of high-quality single crystals of USb at pulsed magnetic fields up to 65 T. | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 114 | Pressure-Driven 5f Localized-Itinerant Transition and Valence Fluctuation in Californium | Huang, Li; Lu, Haiyan | We predict that its 5 f electrons could undergo an orbital-selective localized-itinerant transition under moderate pressure. | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 115 | Effective Coulomb interaction in actinides from linear response approach | Qiu, Ruizhi; Ao, Bingyun; Huang, Li | The effective on-site Coulomb interaction (Hubbard U) between 5 f electrons in actinide metals (Th-Cf) is calculated with the framework of density-functional theory (DFT) using linear response approach. | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 116 | Unifying DFT+U approach for plutonium modeling | Dorado, Boris; Amadon, Bernard; Torrent, Marc; Bottin, Francois; Bouchet, Johann | In the present study, we investigate the influence of these weaker electron correlations on the ground state properties of the ?, ? and ? phases of Pu, calculated with DFT+U (GGA), which is a static approximation of the DMFT. | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 117 | Crystal structure and thermal stability of uranium nitride | Wang, Xiaofang; Yang, Ruilong; Pan, Qifa; Hu, Yin; Liu, Kezhao | In this work, thermal decomposition of nitrogen-rich uranium nitride (denoted as UN 2 ? x) under ultrahigh-vacuum (UHV) conditions was investigated by thermal desorption spectroscopy (TDS). | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 118 | Plutonium in high magnetic fields. | Wartenbe, Mark; Tobash, Paul; Harrison, Neil; Singleton, John; Winter, Laurel; Hebert, Jessica | We present the data in the context of gaining in site into the 5f electrons physics of the material. | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 119 | Atomistic Modelling of Nano-Indentation and Scratching of Nuclear Graphite | Jolley, Kenny; Maerz, Ben; Wu, Houzheng; Smith, Roger | Atomistic Modelling of Nano-Indentation and Scratching of Nuclear Graphite | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 120 | Ab-Initio Simulation of Fission Product Diffusion in Graphite | McHugh, James; Jolley, Kenny; Mouratidis, Pavlos; Heggie, Malcolm; Briddon, Patrick | We have performed high-accuracy DFT simulations of nuclear fission products on graphene and in bulk graphite using LDA, GGA and van der Waals exchange-correlation functionals. | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 121 | Magnetostriction and magnetic torque measurements of uranium monosulfide single crystals | Poudel, Narayan; Jaime, Marcelo; Weickert, Franziska; Jeffries, Jason; Gofryk, Krzysztof | In this talk, our recent measurements of the magnetostriction and magnetic torque of uranium monosulfide single crystals will be presented. | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 122 | Extreme Fermi surface smearing in a maximally disordered concentrated solid solution | Dugdale, Stephen; Robarts, Hannah; Millichamp, Thomas; Lagos, Daniel; Laverock, Jude; Billington, David; Duffy, Jonathan; O’Neill, Daniel; Giblin, Sean; Taylor, Jonathan; Kontrym-Sznajd, Grazyna; Samsel-Czekala, Malgorzata; Bei, Hongbin; Mu, Sai; Samolyuk, German; Stocks, George | Extreme Fermi surface smearing in a maximally disordered concentrated solid solution | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 123 | Ballistic effects in squares and crosses of the ultra-pure delafossite PtCoO2 | McGuinness, Philippa; Zhakina, Elina; Sunko, Veronika; Koenig, Markus; Khim, Seunghyun; Mackenzie, Andrew | Using focused ion beam microstructuring, we have created PtCoO 2 square and cross devices which demonstrate strong ballistic behavior when their dimensions are similar to this mesoscopic length scale. | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 124 | Optical properties of the delafossite PdCoO2 | Homes, Christopher; Khim, Seunghyun; Mackenzie, Andrew P. | The Drude model for the optical properties of a metal may be used to estimate the free-carrier scattering rate, 1/? ~ 80 cm -1 at 5 K, which is well above the transport estimate of 1/? < 0.2 cm -1; this suggests that the scattering rate is strongly renormalized with frequency, and that the optical value is an average of these scattering rates. | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 125 | Controlled introduction of defects to delafossite metals by electron irradiation | Sunko, Veronika; McGuinness, Philippa; Zhakina, Elina; Konczykowski, Marcin; Lef�vre, J�r�mie; Sichelschmidt, J�rg; Mackenzie, Andrew | We report on a systematic study in which both bulk single crystals and focused ion beam sculpted mesostructures are irradiated with 0.8 – 2.5 MeV electrons and their transport properties studied both in- and ex-situ. | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 126 | Local Analysis of Disorder Driven Insulator-to-Metal Transition in the 2D Mott-Hubbard Model. | Szabo, Joseph; Lee, Kyungmin; Trivedi, Nandini; O’Neal, Jared | We present these local measurements to explain and provide avenues to characterize disorder induced transitions in ongoing experimental efforts. | Session 10: Actinides, Valence Fluctuation, Heavy Fermions, and metals |
| 127 | Strained-induced Landau levels in momentum space | Lantagne-Hurtubise, �tienne; Nigge, Pascal; Qu, Amy; M�rsell, Erik; Link, Stefan; Tom, Gary; Gutierrez, Christopher; Starke, Ulrich; Bonn, Douglas; Burke, Sarah; Damascelli, Andrea; Franz, Marcel | Here we extend this body of work by considering momentum-resolved signatures of large-scale, strain-induced pseudo-magnetic fields in graphene. | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 128 | Emergence of Kondo Resonance in Graphene Intercalated with Cerium | Hwang, Jinwoong; Kim, Kyoo; Ryu, Hyejin; Kim, Jingul; Lee, Ji-Eun; Kim, Sooran; Kang, Minhee; Min, Byung; Lanzara, Alessandra; Chung, Jinwook; Mo, Sung-Kwan; Denlinger, Jonathan; Park, Byeong-Gyu; Hwang, Choongyu | Here we report the realization of the Kondo resonance in a prototypical two-dimensional system, graphene, induced by the presence of cerium with the localized spin of a 4 felectron. | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 129 | Gate Modulated Interaction Between Quantum Dots in a Graphene/hBN Heterostructure | Quezada, Eberth; Joucken, Frederic; Ge, Zhehao; Davenport, John; Taniguchi, Takashi; Watanabe, Kenji; Velasco Jr., Jairo | We will discuss and present spatially-resolved scanning tunneling spectroscopy studies performed on a pair of quantum dots. | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 130 | Proximity-induced Ising spin orbit coupling in bilayer graphene/WSe2 van der Waals heterostructures | Cui, Xiaomeng; Island, Joshua; Khoo, Jun; Lewandowski, Cyprian; Zhou, Haoxin; Spanton, Eric; Rhodes, Daniel; Hone, James; Taniguchi, Takashi; Watanabe, Kenji; Levitov, Leonid; Zaletel, Michael; Young, Andrea | Here we report on the direct observation of proximity induced SOC in bilayer graphene in contact with tungsten selenide (WSe2). | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 131 | Strain engineering of a pseudo gauge field superlattice in a suspended graphene nanoribbon studied by scanning probe microscopy | Banerjee, Riju; Nguyen, Viet-Hung; Pabbi, Lavish; Granzier-Nakajima, Tomotaroh; Lherbier, Aurelien; Binion, Anna; Terrones, Mauricio; Charlier, Jean-Christophe; Hudson, Eric | In this talk, we report strain engineering of pseudo electric and magnetic superlattices in suspended graphene nanoribbons by extreme (>10%) strain and study the local electronic density of states by scanning tunneling microscopy. | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 132 | Charge density wave induced proximity spin-orbit coupling effects in graphene on 1T-TaS2 | Szalowski, Karol; Gmitra, Martin | We present our first-principles results for the electronic band structures of graphene on 1T-TaS 2 in normal state and for periodic lattice distorted David star pattern providing commensurate CDW phase. | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 133 | Synthetic topological phases in bilayer graphene via van der Waals proximity induced spin orbit coupling | Island, Joshua; Cui, Xiaomeng; Khoo, Jun; Lewandowski, Cyprian; Zhou, Haoxin; Spanton, Eric; Rhodes, Daniel; Hone, James; Taniguchi, Takashi; Watanabe, Kenji; Levitov, Leonid; Zaletel, Michael; Young, Andrea | At zero magnetic field, we observe a new incompressible phase at charge neutrality due to proximity induced Ising-type SOC, having equal and opposite magnitude on each layer. | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 134 | Topological phases in intercalated epitaxial graphene | Wang, Cai-Zhuang; Kim, Minsung; Ho, Kai-Ming | We find that the electronic band structure near the Fermi energy shows Dirac-cone type or quadratic band dispersion depending on the type of intercalants, and topologically nontrivial band gap opens due to the considerable strength of the spin-orbit coupling. | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 135 | Effect of High gate-voltage application on the molecular adsorption on Graphene | Takai, Kazuyuki; Umehara, Taichi; Ishiguro, Yasushi | In this study, the electrochemical potential is widely varied by graphene FET in order to induce various electro chemical reactions for the charge transfer phenomena. | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 136 | Graphene-Bi (111) interface: atomic structure and electronic properties | Naumov, Ivan; Dev, Pratibha | In this work, using first-principles calculations, we study the interfacial interaction between graphene and Bi (111) surfaces. | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 137 | Comparative Mapping of the Local Potential of Graphene/hBN Systems Using Scanned Probe Techniques | Behn, Wyatt; Brar, Victor; Krebs, Zach; Smith, Keenan; Holdman, Gregory | We present preliminary results comparing three scanned probe methods for mapping electrostatic potential of a graphene sheet: Kelvin probe force microscopy (KPFM), scanning tunneling potentiometry (STP), and scanning tunneling spectroscopy (STS). | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 138 | Concomitant enhancement of electron-phonon coupling and electron-electron interaction in graphene decorated with ytterbium | Kang, Minhee; Hwang, Jinwoong; Lee, Jieun; Fedorov, Alexei; Hwang, Choongyu | Here we report that the presence of Yb results in the enhancement of not only electron-phonon coupling, but also electron-electron interaction in graphene. | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 139 | Nanoscale distribution of strains and defects in graphene transferred onto polymethylmethacrylate | Voylov, Dmitry; Vlassiouk, Ivan; Lavrik, Nick; Kisliuk, Alex; Sokolov, Alexei | Here we present tip-enhanced Raman Spectroscopy (TERS) study of single layer graphene on top of PMMA. | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 140 | Deposition of single-molecule magnets on graphene quantum dots. | St. Marie, Luke; Hruby, Jakub; Hunt, James; Neugebauer, Petr; Nemec, Ivan; El Fatimy, A; Myers-Ward, Rachael; Gaskill, David; Kruskopf, Mattias; Yang, Yanfei; Elmquist, Randolph; Barbara, Paola | We have investigated various methods of grafting transition-metal-based SMMs to the graphene and characterizing the deposited molecules. | Session 11: Adatom and Proximity Driven Electronic Interactions in Graphene |
| 141 | Parallel approaches to long-time atomistic simulations: decomposition, replication, and speculation | Perez, Danny | In this talk, I discuss additional parallelization strategies, namely replication and speculation, that can be used to address the timescale limitation of MD for systems that evolve through rare transitions, concentrating primarily on the Parallel Trajectory Splicing (ParSplice) method and its recent developments. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 142 | Advanced computational methods for an accurate thermodynamic description of the paramagnetic state of magnetic materials from first principles | Gambino, Davide; Alling, Bjorn | To improve the description of magnetic materials in the high temperature paramagnetic phase from first principles, we develop a method [Physical Review B 98, 064105 (2018)] to perform structural relaxations in the paramagnetic phase based on the disordered local moment (DLM) model, and we apply it to the case of a vacancy and a C interstitial in bcc Fe, bcc Fe 1-xCr x random alloys, and defects in CrN. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 143 | Coupled spin dynamics and ab initio molecular dynamics approach for paramagnetic materials | Stockem, Irina; Bergman, Anders; Glensk, Albert; Grabowski, Blazej; K�rmann, Fritz; Hickel, Tilmann; Neugebauer, J�rg; Alling, Bjorn | Coupled spin dynamics and ab initio molecular dynamics approach for paramagnetic materials | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 144 | Full spin modeling and efficient mapping of the high dimensional Hamiltonian in Dy2Ti2O7 | Samarakoon, Anjana; Tennant, David; Batista, Cristian; Zhang, Qiang; Ye, Feng; Zhou, Haidong; Eisenbach, Markus; Barros, Kipton; Grigera, Santiago; Li, Ying Wai; Dun, Zhiling | Here, we present a machine learning workflow to fit multi-experimental datasets to find an optimal Hamiltonian while undertaking phase classification and extracting information about the topography around the region of interest. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 145 | Digital Alchemy Applied to Molecular Dynamics | Proctor, James; Van Anders, Greg; Glotzer, Sharon | Here, we describe a Molecular Dynamics implementation of the �Digital Alchemy� framework. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 146 | Exploring the Early Stages of Corrosion with ab initio Adaptive Kinetic Monte Carlo Simulations of Non-Equilibrium Oxides | Waters, Michael; Rondinelli, James | In order to simulate the atomistic kinetics on such long-time scales in a natural manner, we employ the state-of-the-art ab initio adaptive kinetic Monte Carlo method. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 147 | Removing Lattice Constraints from Lattice Protein Models: A Wang-Landau Study | Farris, Alfred; Seaton, Daniel; Landau, David | In this study, we compare and contrast thermodynamics during the folding process of the continuum model to the original HP lattice protein model for sequences mapped from Crambin, a 46 amino acid plant protein. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 148 | Ensemble Monte Carlo Growth simulations of polymers in confined environments | Vernizzi, Graziano; Nguyen, Trung; Orland, Henri; Olvera de la Cruz, Monica | We apply a recent Ensemble Monte Carlo Growth algorithm to sample the microcanonical density of states of polymers in confined geometries. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 149 | Model Amyloid Protofibrils Simulated with Replica-Exchange Wang-Landau | Wilson, Matthew; Shi, Guangjie; Landau, David; Wuest, Thomas; Schmid, Friederike | The ability to form an amyloid state has been posited as a general feature of peptide systems, and is considered in this study by simulating a collection of coarse-grained, generic model peptides. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 150 | Conformational mechanics for polymers doubly-grafted to a homogeneous substrate | Zhang, Shengming; Bachmann, Michael | We thoroughly investigated the conformational phases of a coarse-grained flexible homopolymer model with both ends of the chain grafted to a homogeneous attractive substrate by means of parallel tempering computer simulations. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 151 | Framework to track Order-Disorder Transitions – From Particles to Block Copolymers | Mukhtyar, Ankita; Escobedo, Fernando | Framework to track Order-Disorder Transitions – From Particles to Block Copolymers | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 152 | Noise reduction and automated molecule detection in atomistic diffusion calculations of correlated systems | Molinari, Nicola; Leifer, Ian; Xie, Yu; Kozinsky, Boris | We propose a new method that systematically reduces the noise in the diffusion constant calculation. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 153 | Scaling relations for the continuum limit from collisions between nanoclusters and rough surfaces | Switzer, Eric; Bhattacharya, Aniket | We report molecular dynamics simulation studies of the coalescence of small clusters with each other and with heterogeneous surfaces, as well as bouncing and fragmentation of clusters. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 154 | Sampling large deviations of mobility and its application to glassy dynamics | Turci, Francesco; Royall, Paddy; Speck, Thomas | I will present numerical and experimental results on the coexistence of the normal supercooled liquid with a phase that is rich in locally favored structures and dynamically arrested. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 155 | Data-Free Deep Neural Networks for Solving Partial Differential Equations in Nanobiophysics | Magill, Martin; Nagel, Andrew; de Haan, Hendrick | In this talk, I will illustrate some benefits of this method for solving PDEs in NBP. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 156 | Machine Learning Surrogate Models to Accelerate Monte-Carlo Calculation | Eisenbach, Markus; Zhang, Jiaxin; Pei, Zongrui; Lupo Pasini, Massimiliano; Li, Ying Wai; Yin, Junqi | Here we present our results of deriving surrogate models from total energy calculations that replicate the behavior of first principles calculations of alloy ordering transitions. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 157 | Reinforcement Learning and the Scientific Method | Coles, Rory; Tamblyn, Isaac | In this work, we present an alternative to model-based reinforcement learning in which exploring and updating the model are separate actions. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 158 | Statistical Precision Annealing Method for Deep Learning | Fang, Zheng; Abarbanel, Henry | We formulate an equivalence between deep learning and state/parameter estimation problems in nonlinear dynamical systems. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 159 | Training Classifiers With a Multi-Grid DMRG Algorithm | Reyes, Justin; Stoudenmire, Edwin | We introduce a novel machine learning architecture for the classification of large vector data. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 160 | Expanded Wang-Landau simulations: Towards a partition function-based prediction of properties for single component systems, mixtures and adsorbed phases | Desgranges, Caroline; Delhommelle, Jerome | In recent work, we proposed an approach, known as Expanded Wang-Landau simulations, that yields highly accurate estimates of the grand-canonical partition function for a wide range of applications, ranging from the bulk to fluids confined in nanoporous materials. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 161 | Relaxation Augmented Free Energy Perturbation | Chiang, Ying-Chih; Cave-Ayland, Christopher; Samways, Marley; Otto, Frank; Essex, Jonathan | We find a close resemblance between the operation in sFEP and the vertical transition between two different electronic states in quantum mechanics. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 162 | Directed random walks and global updates for improved convergence in multicanonical Monte Carlo algorithms | Li, Ying Wai; Farris, Alfred; Eisenbach, Markus | We propose a novel scheme to achieve faster convergence and improve the efficiency of these algorithms. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 163 | Selecting initial distributions of states for efficient Monte Carlo sampling | Baker, Thomas | A simple but massively parallel Monte Carlo method is demonstrated here [1]. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 164 | Development of effective stochastic potential method using random matrix theory for calculation of ensemble-averaged quantum mechanical properties at non-zero temperatures | Scher, Jeremy; Chakraborty, Arindam | In this work, the effective stochastic potential (ESP) method is presented for performing large-scale calculations of ensemble-averaged quantum mechanical properties, and alleviates the computational cost associated with the conformational sampling required to obtain these properties. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 165 | Constructing Generative Models via the Functional Renormalization Group | Yirga, Nahom; Campbell, David | We apply this inverted fRG scheme to the Ising and XY models. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 166 | Population Annealing for Equilibrium Sampling in Statistical Physics | Machta, Jonathan; Amey, Chris; Rose, Nathan | Population Annealing for Equilibrium Sampling in Statistical Physics | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 167 | Population annealing: A massively parallel algorithm for simulating systems with rough free energy landscapes | Amey, Chris; Rose, Nathan; Machta, Jonathan | We will describe both canonical and microcanonical versions of the population annealing algorithm, and discuss applications to spin glasses, binary hard sphere fluids in the glassy regime, and large q Potts models. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 168 | Quantum Free Energy Differences from Non-Equilibrium Path Integral Methods | Hernandez de la Pena, Lisandro; van Zon, Ramses; Schofield, Jeremy; Peslherbe, Gilles | In this work, we discuss how the imaginary-time path integral representation of the quantum canonical partition function and non-equilibrium work fluctuation relations can be combined to yield methods for computing free energy differences in quantum systems using non-equilibrium processes. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 169 | Stable Recursion Relation for the Canonical Partition Function of Non-Interacting Fermions | Yu, Jiangyong; Barghathi, Hatem; Del Maestro, Adrian | In this talk we will present a general recursion scheme for the canonical partition function of free fermions with a quadratic energy level spacing as might be present for ultracold fermionic atoms confined inside a box trap. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 170 | New Approaches to Tensor Network Simulation of 2D Quantum Systems | Hyatt, Katharine; Stoudenmire, Miles | We discuss the benefits and some drawbacks of the method, and we present some preliminary successes in fully two dimensional simulations with an eye to working towards simulating models on the frontier of numerical and analytical understanding. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 171 | Accelerating Monte Carlo Simulations of Two-Dimensional Spin Models using GPUs | Himberg, Benjamin; Sengupta, Sanghita | Utilizing the vast computational power of Graphics Processing Units, we develop novel algorithms in both OpenCL and CUDA to study the statistical mechanical properties of two-dimensional spin models. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 172 | Accelerated simulation of gelation | Dupuis, Romain; Beland, Laurent; Pellenq, Roland | Using such cost-efficient method, we were able to study the formation of alkali-silica gels that is key to understand concrete structures failure. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 173 | Heuristic optimization and sampling with tensor networks for quasi-2D spin glass problems | Mohseni, Masoud; Rams, Marek; Gardas, Bartek | We devise a deterministic classical algorithm to reveal the structure of low energy spectrum for certain spin-glass systems that encode classical optimization problems. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 174 | Studying the finite temperature properties of ferroelectrics | Pitike, Krishna Chaitanya; Li, Ying Wai; Yuk, Simuck; Eisenbach, Markus; Nakhmanson, Serge; Cooper, Valentino | We investigate the influence of XC functionals on the prediction accuracy of ferroelectric phase transitions in PbTiO 3. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 175 | Predicting the surface phase diagram of Ag(111) using ab initio grand canonical Monte Carlo | Wexler, Robert; Qiu, Tian; Rappe, Andrew | We present an implementation of ab initio grand canonical Monte Carlo (GCMC) that automatically predicts surface phase diagrams and apply it to the Ag(111) system. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 176 | A Lattice Boltzmann Method for Simulating Dry and Dense Active Fluids | Nesbitt, David; Pruessner, Gunnar; Lee, Chiu Fan | Surprisingly, the development of a lattice Boltzmann method for dry active fluids is still lacking, which is what we accomplish here. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 177 | Spin-flop transition in the 3D anisotropic Heisenberg antiferromagnet: Finite size scaling for a first order transition where a continuous symmetry is broken | Xu, Jiahao; Tsai, Shan-Ho; Landau, David; Binder, Kurt | We use Monte Carlo simulations to explore the 3D anisotropic Heisenberg antiferromagnet in a field in order to study the finite size behavior of the first order �spin-flop� transition between the Ising-like antiferromagnetic state and the canted, XY-like state[1]. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 178 | Evaluating the Jones polynomial with tensor networks | Meichanetzidis, Konstantinos; Kourtis, Stefanos | We introduce tensor network contraction algorithms for the evaluation of the Jones polynomial of arbitrary knots. | Session 12: Advances in Computational Methods for Statistical Physics and Their Applications |
| 179 | Multi-node quantum networks based on spins and photons | Hanson, Ronald | Multi-node quantum networks based on spins and photons | Session 13: Advances in the Quantum Control of Single Spins in Semiconductors |
| 180 | Spin and Orbital Resonance Driven by a Mechanical Resonator | Fuchs, Gregory | I describe our experiments to drive spin and orbital resonance of single diamond nitrogen-vacancy (NV) centers using the gigahertz-frequency strain oscillations produced within a diamond acoustic resonator. | Session 13: Advances in the Quantum Control of Single Spins in Semiconductors |
| 181 | Probing spin-phonon interactions in semiconductors with x-rays and Gaussian acoustics | Whiteley, Samuel | We demonstrate all-optical detection of acoustic paramagnetic resonance, which enables quantum sensing of phonons without magnetic microwaves. | Session 13: Advances in the Quantum Control of Single Spins in Semiconductors |
| 182 | Quantum nano-photonics with rare-earth-doped materials | Faraon, Andrei | I present quantum nano-photonic devices based on nanophotonic resonators coupled to rare-earth-ions in crystals. | Session 13: Advances in the Quantum Control of Single Spins in Semiconductors |
| 183 | Theory of electrical readout of deep defect qubits in solids | Gali, Adam | In my talk, I will show the power and significance of ab initio atomistic simulation techniques that can provide deep insight into the microscopic mechanisms behind the observed phenomena, and how it can be applied to optimize the conditions of qubit measurements. | Session 13: Advances in the Quantum Control of Single Spins in Semiconductors |
| 184 | Superdiffusive transport of energy in generic Luttinger liquids | Moore, Joel; Bulchandani, Vir; Karrasch, Christoph | We show that the expansion of energy when such a non-integrable Luttinger liquid is locally heated above its ground state shows superdiffusive behavior (i.e., spreading of energy that is intermediate between diffusion and ballistic propagation), by combining an analytical anomalous diffusion model with numerical matrix product state calculations. | Session 14: Beyond Fermi Liquid Theory |
| 185 | Lorentz ratio of a compensated metal | Li, Songci; Maslov, Dmitrii | We obtain the Lorentz ratio of a clean compensated metal with intercarrier interaction as the dominant scattering mechanism by solving exactly the system of coupled integral Boltzmann equations. | Session 14: Beyond Fermi Liquid Theory |
| 186 | Uncovering non-Fermi-liquid behavior in Hund metals: critical behavior of a three-orbital Kondo model | Walter, Elias; Stadler, Katharina; Lee, Seung-Sup; Wang, Yilin; Kotliar, Gabriel; Weichselbaum, Andreas; Von Delft, Jan | We find excellent agreement between conformal field theory (CFT) predictions and numerical renormalization group (NRG) results. | Session 14: Beyond Fermi Liquid Theory |
| 187 | Transport properties of a disordered two-dimensional metal in the vicinity of SDW order: A memory matrix calculation | Freire, Hermann | We implement the memory-matrix approach that allows the calculation of all transport coefficients for the corresponding field-theory model beyond the quasiparticle paradigm. | Session 14: Beyond Fermi Liquid Theory |
| 188 | Transconducting Transition for a Dynamic Boundary Coupled to Several Tomonaga-Luttinger Liquids | Horovitz, Baruch; Giamarchi, Thierry; Le Doussal, Pierre | We analyze this transition line and compare it with large N predictions. | Session 14: Beyond Fermi Liquid Theory |
| 189 | T-linear resistivity in models with local self-energy | Kim, Eun-Ah; Cha, Peter; Patel, Aavishkar; Gull, Emanuel | In this work, we discuss two models that demonstrate T-linearity: lattice-Sachdev-Ye-Kitaev model and the Hubbard model within the dynamical mean-field theory (DMFT). | Session 14: Beyond Fermi Liquid Theory |
| 190 | Theory of Strange Metals from Hot Fermions | Mousatov, Connie; Berg, Erez; Hartnoll, Sean | We study a metal where a large Fermi surface coexists with a set of `hot spots’ with a high density of states. | Session 14: Beyond Fermi Liquid Theory |
| 191 | Emergent Anisotropic Non-Fermi Liquid | Han, SangEun; Lee, Changhee; Moon, Eun-Gook; Min, Hongki | Using the standard renormalization group methods, large Nf theory and the ?=4? d method with fermion flavor number Nf and spatial dimension d, we obtain the anomalous dimensions of electrons ( ?f=0.366/ Nf) in large Nf theory and the associated anisotropic scaling relations of various physical observables. | Session 14: Beyond Fermi Liquid Theory |
| 192 | Fermi liquid corrections for non-equilibrium transport through an SU(N) Anderson impurity with arbitrary electron fillings | Teratani, Yoshimichi; Oguri, Akira | We extend a Fermi-liquid description, which has recently been revisited to derive exact nonequilibrium transport formulas applicable to the particle-hole asymmetric case [1,2], for studying the Anderson impurity model with N orbitals at low temperatures T and at low bias voltages eV. | Session 14: Beyond Fermi Liquid Theory |
| 193 | Out-of-equilibrium dynamics and thermalization across a solvable non-Fermi liquid to Fermi liquid transition | Haldar, Arijit; Haldar, Prosenjit; Banerjee, Sumilan | We study the non-equilibrium dynamics of an interacting model [1] having a quantum phase transition from a Sachdev-Ye-Kitaev (SYK) non-Fermi liquid(NFL) to a Fermi liquid(FL). | Session 14: Beyond Fermi Liquid Theory |
| 194 | Solvable lattice models for intermediate scale non-Fermi liquid metals | Chowdhury, Debanjan; Todadri, Senthil | Going beyond these approaches, I will propose other models and setups where a broad incoherent metallic regime arises in the presence of a finite configurational entropy. | Session 14: Beyond Fermi Liquid Theory |
| 195 | Conductivity of a compensated metal near a Pomeranchuk quantum critical point: the absence of mass renormalization | Maslov, Dmitrii; Li, Songci | In this work, we employ a model case of a compensated metal near a Pomeranchuk-type criticality. | Session 14: Beyond Fermi Liquid Theory |
| 196 | Entanglement signatures of quantum-to-classical crossover of a Fermi surface | Shapourian, Hassan; Ryu, Shinsei | To this end, we analytically compute the bipartite entanglement negativity of a finite-temperature state and show that the coherent Fermi surface is gradually destroyed as a function of temperature and eventually turns into an incoherent classical system, where the entanglement is completely lost. | Session 14: Beyond Fermi Liquid Theory |
| 197 | Strong-Coupling Study of Interlayer Pairing in Bilayer Composite Fermion Metals | Mendoza, Luis; Bonesteel, Nicholas | We study the T=0 Eliashberg equations for interlayer pairing in the composite fermion description of the ?=1/2+1/2 quantum Hall bilayer system. | Session 14: Beyond Fermi Liquid Theory |
| 198 | Spatio-temporal quenches for fast preparation of ground states of critical models | Agarwal, Kartiek; Sondhi, Shivaji; Bhatt, Ravindra; Ippoliti, Matteo; Mitra, Prahar | I will describe the state of the art in the field and discuss our proposal(s) using spatio-temporal quenches to efficiently prepare the ground states of arbitrary interacting critical theories in one dimension and beyond. | Session 15: Breakthroughs in Quantum Dynamics |
| 199 | Localization and Thermalization in Nuclear Spin Chains | Cappellaro, Paola | Localization and Thermalization in Nuclear Spin Chains | Session 15: Breakthroughs in Quantum Dynamics |
| 200 | Many body localization with long range interactions | Nandkishore, Rahul | I will present nonperturbative arguments indicating that MBL can arise in systems with long-range (Coulomb) interactions, through a mechanism dubbed �order enabled localization.� | Session 15: Breakthroughs in Quantum Dynamics |
| 201 | Exploring Quantum Thermalization Near Integrability in a Dipolar Quantum Newton�s Cradle | Lev, Benjamin; Tang, Yijun; Gopalakrishnan, Sarang; Rigol, Marcos; Kao, Wil; Li, Kuan-Yu; Mallayya, Krishnanand | We explore this question by studying the dynamics of the momentum distribution function in a dipolar quantum Newton’s cradle consisting of highly magnetic dysprosium atoms. | Session 15: Breakthroughs in Quantum Dynamics |
| 202 | Many body quantum chaos | Prosen, Tomasz | Many body quantum chaos | Session 15: Breakthroughs in Quantum Dynamics |
| 203 | Performance of Open-Source Real-Space Multigrid DFT Code on Pre-Exascale Architecture | Briggs, Emil; Lu, Wenchang; Bernholc, Jerry | Performance of Open-Source Real-Space Multigrid DFT Code on Pre-Exascale Architecture | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 204 | Full-potential LSMS method for ab initio electronic structure calculations at large scale | Wang, Yang; Liu, Xianglin; Eisenbach, Markus; Stocks, George | In this presentation, we will show the scalability of the full-potential LSMS method on supercomputers, and discuss its applications in the study of mechanical properties of transition metal alloys. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 205 | Application of full-potential LSMS method in high entropy alloys | Liu, Xianglin; Wang, Yang; Eisenbach, Markus; Stocks, George | Here we demonstrate our latest implementation of the full potential LSMS method (FP-LSMS) that can accurately calculate systems with thousands of atoms. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 206 | Opportunities for exascale in the characterization of uranium materials | Shields, Ashley; Miskowiec, Andrew; Niedziela, Jennifer; Kirkegaard, Marie; Kapsimalis, Roger; Anderson, Brian | Here we present progress toward correlating vibrational properties with the fundamental coordination environments, aiming to facilitate interpretation of experimental analytical data from spectroscopy to characterize complex uranium phases. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 207 | Moving the Effective Fragment Molecular Orbital method towards exascale | Gunina, Anastasia; Gordon, Mark | In this study, a major effort is related to optimizing the bottleneck step of generating EFP parameters, called MAKEFP, which needs to be repeated for every new fragment geometry in the EFMO method. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 208 | Recent Advances in PARSEC for Performing Large-scale Electronic Structure Calculations in Real Space | Liou, Kai-Hsin; Chelikowsky, James; Yang, Chao | We will present a number of recent advances made in PARSEC that allow users to tackle larger systems that contain tens of thousands of atoms. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 209 | Towards Paradigm Shifts in Electronic Structure Calculation for Large Systems: Wavelets, Fragments and Advanced Treatments of Excited States | Ratcliff, Laura; Mohr, Stephan; DEUTSCH, Thierry; Genovese, Luigi | We will demonstrate the advantages of wavelets as a basis for large scale DFT calculations, as implemented in BigDFT. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 210 | Affordable and accurate large-scale hybrid-functional calculations on GPU-accelerated supercomputers | DEUTSCH, Thierry; Genovese, Luigi; Ratcliff, Laura | We present a highly optimized multiple graphics processing unit implementation of the exact exchange operator which allows one to perform fast hybrid functional density-functional theory (DFT) calculations with systematic basis sets without additional approximations for up to a thousand atoms. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 211 | Attacking the Strong and Weak Scaling Limits in Linear Scaling Hybrid Density Functional Theory | Distasio, Robert; Ko, Hsin-Yu; Jia, Junteng; Santra, Biswajit; Sparrow, Zachary; Vazquez-Mayagoitia, Alvaro; Wu, Xifan; Car, Roberto | In this work, we present a series of theoretical developments and algorithmic improvements which drastically reduce the time to solution and take us one step closer to routine hybrid DFT-based ab initio molecular dynamics simulations of large-scale condensed-phase systems. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 212 | Large-Scale Benchmark of Electronic Structure Solvers with the ELSI Infrastructure | Yu, Victor; Dawson, William; Garcia, Alberto; Havu, Ville; Hourahine, Ben; Huhn, William; Jacquelin, Mathias; Jia, Weile; Keceli, Murat; Laasner, Raul; Li, Yingzhou; Lin, Lin; Lu, Jianfeng; Roman, Jose; Vazquez-Mayagoitia, Alvaro; Yang, Chao; Blum, Volker | We here present an update to the ELectronic Structure Infrastructure (ELSI), an open-source software interface to facilitate the implementation and optimal use of high-performance solver libraries covering cubic scaling eigensolvers, linear scaling density-matrix-based algorithms, and other reduced scaling methods in between. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 213 | Enabling Large-Scale Isobaric-Isothermal Hybrid Density Functional Theory Simulations in the Condensed Phase | Ko, Hsin-Yu; Distasio, Robert; Santra, Biswajit; Car, Roberto | In this work, we derive and implement the exact-exchange contributions to the stress tensor, thereby enabling hybrid DFT-based AIMD simulations of arbitrary cell sizes and shapes in the NpT ensemble. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 214 | NWChemEx: Tackling Chemical, Materials, and Biochemical Challenges in the Exascale Era | De Jong, Wibe; Keipert, Kristopher; Bair, Raymond; Richard, Ryan; Boschen, Jeffrey; Windus, Theresa; Harrison, Robert; Dunning, Thomas | In the first portion of this talk, the limitations of NWChem will be described. Next, we will illustrate how the scalability limitations are addressed in the NWChemEx design via the implementation of novel reduced-scaling methods with a new high-performance tensor library. Finally, we will show how lossy compression and differenced checkpointing techniques are utilized in NWChemEx to address more general exascale challenges related to data volume and system resilience. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 215 | Fast Heat-Bath Configuration Interaction | Li, Junhao; Otten, Matthew; Holmes, Adam; Sharma, Sandeep; Umrigar, Cyrus | I present recent advances we have made to the method that allow us to use 2 billion variational determinants and trillions of perturbative determinants. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 216 | OpenAtom: massively-parallel simulations for molecular and electronic dynamics | Kim, Minjung; Mandal, Subhasish; Mikida, Eric; Chandrasekar, Kavitha; Li, Qi; Bohm, Eric; Jain, Nikhil; Kale, Laxmikant; Martyna, Glenn; Ismail-Beigi, Sohrab | Here, we describe recent advances in OA capabilities: 1) Path-integral Car-Parinello MD simulations implementation and performance results of a hydrogen adsorption in a metal-organic framework (MOF) and 2) release of a GW method implementation for quasiparticle properties and the scaling results up to 32K cores on Mira and Blue Waters. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 217 | Automated Discovery of Chemical Mechanisms using Reactive Molecular Dynamics | Koval, James; Ismail, Ahmed | As examples, we apply this approach to the combustion mechanism of non-petroleum-based alternative fuel candidates. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 218 | MOLECULAR DYNAMICS SIMULATIONS OF AN ENTIRE HIV VIRION | Perilla, Juan; Reddy, Tyler | Here, we present the steps performed towards the construction of an atomistic model of a mature and immature virion. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 219 | Co-design in molecular dynamics for exascale | Reeve, Sam; Belak, James | We focus here on molecular dynamics, assessing common algorithmic choices (e.g. ordering of computation and data layout in memory) and discussing new choices for novel machines. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 220 | Extending the accuracy, size, and duration of atomistic simulations on exascale hardware | Perez, Danny; Voter, Arthur; Niklasson, Anders; Negre, Christian; Cawkwell, Marc; Uberuaga, Blas; Plimpton, Steven; Thompson, Aidan; Wood, Mitchell; Cusentino, Mary Alice; Wirth, Brian; Yang, Li | The EXAALT project aims at addressing this challenge for systems that evolve through sequences of rare, thermally activated, events. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 221 | Large-Scale Simulations of Protein Self-Assembly | Glaser, Jens; Glotzer, Sharon | Here we present results of our efforts to simulate the nucleation of protein crystals on the Titan supercomputer, employing large-scale simulations of rigid protein models to form the experimentally observed crystal structure. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 222 | First-principles simulations of electronic excitations and real-time dynamics on high-performance super computers | Schleife, Andre | I will illustrate how fast iterative eigensolvers help us tackle these problems on Blue Waters and broaden the applicability of many-body perturbation theory towards more diverse material systems. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 223 | Massively-parallel time-dependent density functional theory calculations for optical near-field excitations in silicon | Noda, Masashi; Iida, Kenji; Yamaguchi, Maiku; Ishimura, Kazuya; Yatsui, Takashi; Nobusada, Katsuyuki; Yabana, Kazuhiro | We have applied the code to wave vector excitations in three silicon bilayers with a Si(111) surface terminated by hydrogen atoms by optical near fields (ONF). | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 224 | Combined Next-Generation Neutron Vibrational Spectroscopy and High-Accuracy Massively Parallel DFT Calculations Benchmark Electronic Descriptions of Complex Organic Molecular Systems | Pandey, Anup; Sedova, Ada; Daemen, Luke; Cheng, Yongqiang; Ramirez-Cuesta, Anibal | By exploiting the parallel nature of finite-displacement methods, we can calculate the spectra of complex pharmaceutical and bio-organic solids using very large basis sets and a number of DFT functionals and dispersion descriptions in a few hours using the Titan supercomputer. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 225 | ExaAM: Additive manufacturing process modeling at the fidelity of the microstructure | Belak, James; turner, John | In FY17, the USDOE Exascale Computing Project (ECP) initiated projects to design and develop simulation codes to use exascale computing, including the Exascale Additive Manufacturing Project (ExaAM), a partnership between LLNL, LANL, and ORNL. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 226 | Cross-scale atomistic simulations of crystal plasticity | Bulatov, Vasily | We will discuss new insights into physics of crystal plasticity brought about by our simulations and discuss challenges and strategies for on-the-fly learning on immense data generated in such simulations. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 227 | Beyond Petascale: HPC and Polymeric Materials Design | Goswami, Monojoy | In this talk, I will highlight the importance of beyond-petascale computing in advanced manufacturing, polyelectrolyte complexation and phase change materials using molecular dynamics simulations that can help achieve future materials design goal. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 228 | Towards Exascale Quantum Transport Calculations | Lu, Wenchang; Briggs, Emil; Bernholc, Jerry | Based on the non-equilibrium Green�s function (NEGF) methodology within the density functional theory, we have developed a NEGF module within the real-space multigrid (RMG) suite of codes (www.rmgdft.org) by which the quantum transport properties can be studied for nanoscale devices containing tens of thousands of atoms. | Session 16: Building the Bridge to Exascale: Applications and Opportunities for Materials, Chemistry, and Biology |
| 229 | Honeycomb Lattice-Type CDW associated with Interlayer Cu Ions Ordering in 1T-CuxTiSe2 | Kitou, Shunsuke; Kobayashi, Shintaro; Kaneko, Tatsuya; Katayama, Naoyuki; Yunoki, Seiji; Nakamura, Toshikazu; Sawa, Hiroshi | We succeeded in synthesis of single crystal samples of Cu xTiSe 2 ( x = 0 ~ 0.35) and performed physical property measurements, synchrotron x-ray diffraction experiments, and density-functional-theory calculations. | Session 17: Charge Order |
| 230 | Charge disproportionation, mixed valence, and Janus effect in multiorbital systems: A tale of two insulators | Isidori, Aldo; Berovic, Maja; Fanfarillo, Laura; De Medici, Luca; Fabrizio, Michele; Capone, Massimo | We characterize this interaction-resilient metal as a mixed-valence state. | Session 17: Charge Order |
| 231 | Unraveling spin and charge dynamics in two-leg spin ladders using resonant inelastic x-ray scattering | Kumar, Umesh; Nocera, Alberto; Dagotto, Elbio; Johnston, Steven | We investigate the RIXS spectra of undoped and doped antiferromagnetic spin-ladder cuprate in both the non-spin conserving (NSC) and spin-conserving (SC) channels at the Cu L 3 -edge. | Session 17: Charge Order |
| 232 | Stripes and Nematicity in a Hole-Doped Three-Orbital Spin-Fermion Model for Superconducting Cuprates | Moreo, Adriana | These results indicate that the spin and charge distribution experimentally observed in hole-doped cuprates is captured by unbiased Monte Carlo studies of a doped charge-transfer insulator. | Session 17: Charge Order |
| 233 | New long-lived metastable state mediated by mode-selective electron-phonon coupling in 1T-TaSe2 | You, Wenjing; Shi, Xun; Zhang, Yingchao; Tao, Zhensheng; Oppeneer, Peter; Wu, Xianxin; Thomale, Ronny; Rossnagel, Kai; Bauer, Michael; Kapteyn, Henry; Murnane, Margaret | Here we present a new ultrafast electron calorimetry technique that can systematically uncover new phases of quantum matter. | Session 17: Charge Order |
| 234 | Observation of M2 phase coming from the charge density wave for the insulator-to-metal transition in VO2. | Cho, Jin-Cheol; Slusar, Tetiana; Kim, Hyun-Tak | In this talk, through simultaneous measurements of temperature dependence of micro-Raman spectra and resistance, as well as in-situ XRD and resistance, we observed that T IMT is prior to temperature of structural phase transition, and that M2 Raman peak still remains from screening effect despite high temperature of 370 K. Therefore, we suggest that the observed M2 Raman peak is caused by the remained CDW structure. | Session 17: Charge Order |
| 235 | Ultrafast recovery of charge density wave order controlled in a pump-pump-probe free electron laser experiment | Gorobtsov, Oleg; Hua, Nelson; Patel, Sheena; Shabalin, Anatoly; Zhu, Diling; Fullerton, Eric; Shpyrko, Oleg; Singer, Andrej | We now use two optical pump pulses, with x-ray FEL pulse providing feedback, to fine-tune the state of the material. | Session 17: Charge Order |
| 236 | Ultrafast probing of collective mode of the charge order in La1.875Ba0.125CuO4 | Ergecen, Emre; Yilmaz, Mehmet; Ilyas, Batyr; Gu, Genda; Gedik, Nuh | Here, we perform time resolved transient reflectivity measurements on La 1.875Ba 0.125CuO 4 (LBCO) and La 1.885Ba 0.115CuO 4 (LBCO). | Session 17: Charge Order |
| 237 | The role of non-local correlations in the valence band spectra in NiO | Kang, Byungkyun; Choi, Sangkook; Semon, Patrick; Kutepov, Andrey; Hubertus, Van Dam; Kotliar, Gabriel | By Using recently developed LQSGW + DMFT along with charge self-consistent LDA+DMFT, we will discuss the role of non-local correlation in the formation of the second peak and their temperature dependence. | Session 17: Charge Order |
| 238 | Magnetotransport in H || c of La1.875Ba0.125CuO4 near the charge order (CO) transition | Stanley, Lily; Baity, Paul; Popovic, Dragana; Tranquada, John; Gu, Genda | Our work on La 2-xBa xCuO 4 with x=0.125 (LBCO) in zero magnetic field ( H) reveals the presence of dynamic behavior within the charge-ordered state in the form of avalanches, similar to that in La 1.48Nd 0.4Sr 0.12CuO 4 (LNSCO). | Session 17: Charge Order |
| 239 | Precision measurement of charge-order formation by coherent Resonant X-ray Scattering | Yue, Li; Li, Jiarui; Mazzoli, Claudio; Comin, Riccardo; Li, Yuan | We report experimental research on the spontaneous formation of charge order and its relationship with disorder pinning effects. | Session 17: Charge Order |
| 240 | Femtosecond electron imaging of a transformation between different symmetry broken ground states of 2D charge density wave near a nonthermal critical point | Zhou, Faran; Williams, Joseph; Malliakas, Christos; Kanatzidis, Mercouri; Ruan, Chong-yu | We study the atomic scale dynamics of a CDW phase transition from a stripe phase into a new topological phase in rare-earth tritelluride compound. | Session 17: Charge Order |
| 241 | Charge Density Wave Order in the Half-Filled Three Dimensional Holstein Model | Cohen-Stead, Benjamin; Chen, Chuang; Meng, Zi Yang; Scalettar, Richard | Here we demonstrate that the recent development of Self-Learning Monte Carlo (SLMC)[1,2] has made it possible to significantly reduce autocorrelation times, thereby allowing for simulation studies of the Holstein model on a fully three-dimensional cubic lattice at half-filling. | Session 17: Charge Order |
| 242 | Mechanical strain-tuned magnetism and AFM Neel temperature by 90 K in PrVO3 thin films | Prellier, Wilfrid | Here, we present an experimental study of magnetic response to the residual strain in PVO thin films by growing PVO films on a variety of single crystal substrates and by varying PVO film thickness on a single crystal substrate. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 243 | Unusual Electronic Phase Separation Phenomena in Manganite Ultrathin Films | Chen, Hongyan; Yu, Yang; Yu, Bai; Lin, Hanxuan; Li, xiaolong; Liu, Hao; Miao, Tian; Kou, Yunfang; Zhang, Yongsheng; li, Yan; Tang, Jin; Wang, Zechao; Cai, Peng; Zhu, Yinyan; Wang, Zhe; Cheng, Zhaohua; Zhong, Xiaoyan; Wang, Wenbin; Gao, Xingyu; Wu, Ruqian; Yin, Lifeng; Shen, Jian | In this work, we show an unusual behavior in La 0.7Sr 0.3MnO 3 (LSMO) ultrathin films grown on SrTiO 3 (001) (STO) substrate. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 244 | 2DEG state at LaInO3/BaSnO3 interface | Kim, Young Mo; Kim, Youjung; Shin, Juyeon; Char, Kookrin | Based on such findings, we developed a model for interface polarization in LIO, in which the polarization exists only in the 4 unit cell thick LIO near the interface. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 245 | Tuning the physical properties via Sr doping in the 4d transition metal oxide LaRhO3 | Jiang, Juan; Lee, Sangjae; Walker, Frederick; Ahn, Charles | We discuss the physical properties of Rhodate thin film in this talk. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 246 | Modulation of manganite thin-film properties by strontium titanate excitons | Tang, Chi Sin; Yin, Xinmao; Wang, Le; Wee, Andrew Thye Shen; Wang, Junling; Rusydi, Andrivo | A comprehensive investigation of the optical, electronic and magnetic properties of La 0.7Sr 0.3MnO 3 films on SrTiO 3 (LSMO/STO) and other substrates is conducted using multiple experimental techniques. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 247 | Thickness-dependent metal-to-insulator transition in La-doped SrTiO3 thin films | Shin, Yeongjae; Lau, Claudia; Lee, Sangjae; Walker, Frederick; Ahn, Charles | We demonstrate that electronic transport is highly affected by the insulating dead layers inside LSTO films, whose thickness depends on La doping. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 248 | Thickness-dependent oxygen octahedral distortions in perovskite thin films as an adaption to the heterointerface | Fowlie, Jennifer; Lichtensteiger, C�line; Gibert, Marta; Meley, Hugo; Willmott, Philip; Triscone, Jean-Marc | In this study, we analyse the thickness-dependence of the octahedral tilts and rotations of thin films of LaNiO 3. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 249 | The spin texture in a SrTiO3(111) two-dimensional electron gas | He, Pan; McKeown Walker, Siobhan; Zhang, Shulei; Bruno, F. Y.; Bahramy, M. S.; Lee, Jongmin; Ramaswamy, Rajagopalan; Cai, Kaiming; Heinonen, Olle; Vignale, Giovanni; Baumberger, Felix; Yang, Hyunsoo | We report the observation of a bilinear magnetoelectric resistance (BMER) signal in the d-orbital two-dimensional electron gas (2DEG) at the SrTiO 3 (STO) (111) surface, demonstrating a spin-splitting. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 250 | Anomalous behaviour of phonon modes � Magnetic properties correlations in La0.7Sr0.3MnO3/SrRuO3 superlattices | S H, Roshna; Padhan, P; Prellier, Wilfrid | Anomalous behaviour of phonon modes � Magnetic properties correlations in La0.7Sr0.3MnO3/SrRuO3 superlattices | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 251 | Induced ferromagnetism due to oxygen vacancies at the YBa2Cu3O7/SrTiO3 Interface | Boom, Kyro; He, Mi; Chia, Ee Min; Zhu, Jian-Xin; Haraldsen, Jason | In the study, we set out to explain the emergent magnetic properties at the interface between YBa 2Cu 3O 7/SrTiO 3. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 252 | Mechanism of the irreversible back gate doping at the LaAlO3/SrTiO3 Interface | Yin, Chunhai; Smink, Sander; Leermakers, Inge; Tang, Lucas; Lebedev, Nikita; Zeitler, Uli; Hilgenkamp, Hans; Aarts, Jan | In this work, we study the mechanism of the irreversible field-effect doping by means of a back gate. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 253 | Influence of defects on surface morphology and electronic structure in BiVO4 | Wang, Wennie; Liu, Mingzhao; Choi, Kyoung-Shin; Galli, Giulia | Here, we use density functional theory calculations to study the surface morphology and electronic structure of BiVO4, and compare them with experiment. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 254 | Electronic Symmetry of La0.67Sr0.33MnO3/SrTiO3 Interfaces as a Function of Film Thickness | Taylor, Joel; Zhao, Kun; Saghayezhian, Mohammad; Zhang, Jiandi; Haber, Louis; Plummer, E | Electronic Symmetry of La0.67Sr0.33MnO3/SrTiO3 Interfaces as a Function of Film Thickness | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 255 | Decoupling carrier concentration and electron-phonon coupling in oxide heterostructures | Meyers, Derek; Nakatsukasa, Ken; Mu, Sai; Hao, Lin; Yang, Junyi; Cao, Yue; Fabbris, Gilberto; Miao, Hu; Pelliciari, Jonathan; McNally, Daniel; Dantz, Marcus; Paris, Eugenio; Karapetrova, Evguenia; Choi, Yongseong; Haskel, Daniel; Shafer, Padraic; Arenholz, Elke; Thorsten, Schmitt; Berlijn, Tom; Johnston, Steven; Liu, Jian; Dean, Mark | We present the results of resonant inelastic x-ray scattering at the O K-edge on superlattices of form nSrIrO 3/ mSrTiO 3. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 256 | Operando bi-modal studies of complex oxides growth with RHEED and surface x-ray diffraction | Hong, Hawoong; Fang, Xinyue; Lin, Meng-Kai; Chiang, Tai-Chang; Wrobel, Friederike; Bhattacharya, Anand | This bimodal study was made during La 2CuO 4 (001) film growth on SrLaAlO 4 (001) substrates with MBE techniques. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 257 | Suppression of Bi disproportionation in minimally electron doped BaBiO3 epitaxial thin films | Cao, Hui | We have studied the three-dimensional charge-density-wave in high quality BaBiO 3 and electron doped BaBiO 3 single crystal thin films by X-ray photoelectron spectroscopy, X-ray absorption spectroscopy, Raman shift and ellipsometry technique.The electron doping is achieved by very small amount of oxygen vacancies purposely induced by vacuum annealing. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 258 | Polarization switch on h-LuFeO3 multiferroic | da Silva, Petrucio; Prasad, Bhagwati; Thakare, Vishal; Das, Sujit; Ramesh, Ramamoorthy | In this work, we study the ferroelectric properties of hexagonal LuFeO 3 (h-LFO). | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 259 | Superconductivity in doped SrTiO3 | Galletti, Luca; Ahadi, Kaveh; Li, Yuntian; Stemmer, Susanne | We report on the transport properties of a series of doped 250-nm-thick SrTiO 3 films, grown by molecular beam epitaxy on undoped (001) SrTiO 3 substrates. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 260 | Comparative Study of Surface Structural and Physical Properties of Sr3T2O7 (T = Mn, Ru) | Yang, Yifan; Xing, Lingyi; Saghayezhian, Mohammad; Jin, Rongying; Plummer, E | Using low-energy electron diffraction (LEED) and high-resolution electron energy loss spectroscopy (HREELS), we have investigated the surface structural and physical properties of Sr 3T 2O 7 (T = Mn, Ru). | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 261 | Electronic and magnetic properties of double perovskite thin film Sr2CrReO6 | Flores, Jose; Meng, Keng-Yuan; Ahmed, Adam; Yang, Fengyuan | We explore this possibility in high magnetic ordering temperature Sr 2CrReO 6thin films. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 262 | High-k perovskite dielectric BaHf1-xTixO3 | Lee, Hahoon; Song, Dowon; Char, Kookrin | In this study, we fabricated capacitors with an atomically-mixed BaHf 1-xTi xO 3 (BHT, with x varying from 0 to 0.8) layer as the dielectric insulator with a perovskite semiconductor La-doped BaSnO 3 (BLSO) layer as the electrode. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 263 | Defect-controlled transport phenomena at complex oxide interfaces | Boergers, Jacqueline; Rose, Marc; Dittmann, Regina; Gunkel, Felix | We provide a comprehensive discussion of the coupling of electronic gating and gradual defect profiles. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 264 | Superoxygenation study of cuprate and iridate thin films | Zhang, Hao; Zhang, Chao; Gauquelin, Nicolas; Cheng, Shaobo; Botton, Gianluigi; McMahon, Christopher; Hawthorn, David; Clancy, Patrick; Chun, Sae Hwan; Seo, Ambrose; Kim, Young-June; Wei, John | We extend this superoxygenation technique to YBa 2Cu 3O 7-? thin films, which are more reactive due to their large surface-to-volume ratio, and to the layered iridate Sr 2IrO 4, which is difficult to hole-dope by cation substitution. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 265 | Temperature-induced metal-to-insulator transition in epitaxially grown NbO2 films | Joshi, Toyanath; Cirino, Eli; Lederman, David | In this presentation, we will demonstrate temperature dependent electrical resistivity of epitaxially grown NbO 2 thin films revealing the actual mechanism of MIT in NbO 2. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 266 | Interfacial Mott state in iridate-nickelate superlattices | Liu, Xiaoran; Kotiuga, Michele; Kim, Heung Sik; N’Diaye, Alpha; Choi, Yongseong; Cao, Yanwei; Pal, Banabir; Wen, Fangdi; Kareev, Mikhail; Freeland, John; Haskel, Daniel; Shafer, Padraic; Arenholz, Elke; Haule, Kristjan; Vanderbilt, David; Rabe, Karin; Chakhalian, Jak | Interfacial Mott state in iridate-nickelate superlattices | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 267 | Doping study of ultra-wide bandgap spinel semiconductor ZnGa2O4 films | Hong, Sungyun; Jang, Yeaju; Seo, Jihoon | We will report the effect of various dopants on ZnGa 2O 4. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 268 | AFM Study of Temperature Driven Phase Transitions in Vanadates | Binion, Anna; Banerjee, Riju; Pabbi, Lavish; Lapano, Jason; Engel-Herbert, Roman; Hudson, Eric | Here we present results from atomic force microscopy studies of vanadates undergoing temperature driven phase transitions. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 269 | Inversion symmetry breaking at the heterointerface of SrRuO3 thin films | Roh, Chang Jae; Kim, Jeong Rae; Jo, Yong Ryun; Choi, Jeong Gi; Kim, Jin Kwon; Shin, Yeongjae; Kim, Bongju; Kim, Bong Joong; Noh, Tae Won; Lee, Jongseok | We investigate the structural symmetry of SrRuO 3 thin films grown on the SrTiO 3 substrate by exploiting optical second harmonic generation (SHG) technique. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 270 | Effect of perovskite dielectric BaxSr1-xHfO3 on BaSnO3 | CHO, HYEONGMIN; Kim, Young Mo; Char, Kookrin | We reduced BSHO lattice mismatch with BLSO by finding a suitable ratio of BHO to SHO. | Session 18: Complex Oxide Surfaces, Interfaces, and Thin Films |
| 271 | Out-of-equilibrium transverse field XY chain – non-equilibrium phase transitions, transport, and entanglement | Puel, Tharnier; Chesi, Stefano; Kirchner, Stefan; Ribeiro, Pedro | Here we explore the non-equilibrium steady-state of an XY spin chain in a transverse magnetic field coupled at its ends to magnetic thermal reservoirs. | Session 19: Correlated Chains and Ladders |
| 272 | Estimates of the Quantum Fisher Information in the $S=1$ Anti-Ferromagnetic Heisenberg Spin Chain with Uniaxial Anisotropy | Lambert, James; Sorensen, Erik | We focus on the $S=1$ anti-ferromagnetic Heisenberg model with uniaxial anisotropy. | Session 19: Correlated Chains and Ladders |
| 273 | Reduced density operators of finite-sized Heisenberg XXZ chains | Lu, Bohan; Seidel, Alexander | Here we present studies on the size dependence of this mysterious boundary manifold. | Session 19: Correlated Chains and Ladders |
| 274 | Localization in a t ? J type ladder with translational symmetry | Sun, Rongyang; Zhu, Zheng; Weng, Zheng-Yu | Localization in a t ? J type ladder with translational symmetry | Session 19: Correlated Chains and Ladders |
| 275 | Flexible magnetism in flexible crystals | Kenny, Elise; Jacko, Anthony; Powell, Ben | We predict that the elastically flexible crystal, [Cu(acac) 2] [1], contains quasi-one-dimensional magnetic interactions that change dramatically when the crystal is bent. | Session 19: Correlated Chains and Ladders |
| 276 | Ladder-like optical conductivity in the spin-fermion model | Classen, Laura; Robinson, Neil; Tsvelik, Alexei | We show that the RG flow of the corresponding ladder is towards the dMott phase, a gapped spin-liquid with short-ranged d-wave pairing correlations, and reveals an intermediate SO(5)xSO(3) symmetry. | Session 19: Correlated Chains and Ladders |
| 277 | Spectrum of Dissipative Ising Chain | Wang, Jian; Chakravarty, Sudip | This paper extends the (0+1)D spin-boson problem to its (1+1)D version, a dissipative Ising Chain. | Session 19: Correlated Chains and Ladders |
| 278 | Single-component fermion chain: emergent mode and liquids of bound states | He, Yuchi; Tian, Binbin; Pekker, David; Mong, Roger | We study the formation of bound states in a single-component Fermi chain with attractive interactions. | Session 19: Correlated Chains and Ladders |
| 279 | Spontaneous SUSY breaking and NG modes in interacting Majorana chains | Sannomiya, Noriaki; Katsura, Hosho | We thus introduce and study interacting Majorana chains with N = 1 SUSY [3]. | Session 19: Correlated Chains and Ladders |
| 280 | Majorana-Hubbard Ladders | Rahmani, Armin; Pikulin, Dmitry; Affleck, Ian | Extending the results on one- and two-dimensional Majorana-Hubbard models, here we study two- and four-leg ladders using both field theory and the {density-matrix renormalization group (DMRG)} methods, finding a phase diagram largely consistent with that proposed for the two-dimensional model on the square lattice. | Session 19: Correlated Chains and Ladders |
| 281 | Ising ferromagnet to valence bond solid transition in a one-dimensional spin chain-analogies to deconfined quantum critical points | Jiang, Shenghan; Motrunich, Olexei | We study a 1D system that shows many analogies to proposed 2D deconfined quantum critical points. | Session 19: Correlated Chains and Ladders |
| 282 | X-ray resonant scattering study on the minor canted moment of spin-1 1 dimensional chain system NiTe2O5 | Kim, Donghwan; Ko, Kyung-Tae; Kim, Younghak; Oh, Yoon Seok; Park, Jae-Hoon | A detailed analysis on the azimuthal and polarization dependence of the (010) structural forbidden peak reveals that the resonant peak is a result of interference between the anisotropic tensor susceptibility and the magnetic resonant scattering amplitude from ‘up-down-down-up’ minor canted moment in ac plane. | Session 19: Correlated Chains and Ladders |
| 283 | Correlation between spatial and spectral inhomogeneities in the quasi one-dimensional purple bronze Li0.9Mo6O17 | Detmer, Samuel; Soumyanarayanan, Anjan; Yee, Michael; He, Yang; Greenblatt, Martha; Hussey, Nigel; Hoffman, Jennifer | Here we present spectroscopic scanning tunneling microscope (STM) images of 1D ‘chains’ on the surface of LMO. | Session 19: Correlated Chains and Ladders |
| 284 | Slow Dynamics of the Fredkin Spin Chain | Adhikari, Khagendra; Beach, Kevin | We present numerical results for the Fredkin model—a quantum spin chain with an unusual three-body interaction term—which exhibits a dynamical exponent z ? 3. | Session 19: Correlated Chains and Ladders |
| 285 | Dynamical spin conductivity in disordered quantum spin chains | Takayoshi, Shintaro; Giamarchi, Thierry | We study the dynamical spin conductivity in XXZ antiferromagnets with random magnetic field. | Session 19: Correlated Chains and Ladders |
| 286 | Enhanced Magnetic Ordering in Sm Metal under Extreme Pressure | Deng, Yuhang; Schilling, James | Enhanced Magnetic Ordering in Sm Metal under Extreme Pressure | Session 20: Correlated Magnetism and Other Ordered Phases |
| 287 | Superparamagnetic clusters in antiferromagnetic Eu0.52Ca0.48B6 seen by Small Angle Neutron Scattering (SANS) | Beaudin, Gabrielle; Bianchi, Andrea; Laver, Mark; Arnold, Robert | Here we report on experiment which extends an earlier experiment on EuB6 where SANS indicated the presence of magnetic polarons. | Session 20: Correlated Magnetism and Other Ordered Phases |
| 288 | NMR Studies of TmVO4 | Wang, Zhipan; Mei, Ziwen; Menegasso, Paulo; Kissikov, Tanat; Massat, Pierre; Fisher, Ian; Curro, Nicholas | We have performed 51V NMR in a single crystal to investigate the role of magnetic and quadrupolar fluctuations. | Session 20: Correlated Magnetism and Other Ordered Phases |
| 289 | NMR Studies of Nematicity in TmVO4 and TmAsO4 | Mei, Ziwen; Wang, Zhipan; Menegasso, Paulo; Massat, Pierre; Fisher, Ian; Curro, Nicholas | We have studied the critical nematic fluctuations via 51V and 75As NMR in TmVO 4 and TmAsO 4. | Session 20: Correlated Magnetism and Other Ordered Phases |
| 290 | Electronic correlations in potential new rare-earth permanent magnet materials | Galler, Anna; Pourovskii, Leonid; Biermann, Silke | We solve the corresponding quantum impurity problem by means of a continuous-time Quantum Monte Carlo solver and analyze the resulting electronic structure focusing on the degree of localization of the Ce-4f states as well as the magnetic properties of the compounds. | Session 20: Correlated Magnetism and Other Ordered Phases |
| 291 | Microscopic Theory of ?3 Quadrupole Ordering in Pr Compounds on the Basis of a j-j Coupling Scheme | Yamamura, Ryosuke; Hotta, Takashi | For the purpose, we introduce the ? 7-? 8 Hubbard model on a simple cubic lattice with the effective interactions which induce local ? 3 states. | Session 20: Correlated Magnetism and Other Ordered Phases |
| 292 | Investigating 4f ferrroquadrupolar phase transitions: local moment realizations of nematicity | Rosenberg, Elliott; Fisher, Ian | We implement an elastoresistivity technique previously used in probing another 4f intermetallic, YbRu 2Ge 2 , and extend this technique to investigate the nematic behavior of TmAg 2 while applying a �transverse� magnetic field to suppress the ferroquadrupolar phase transition to 0K. | Session 20: Correlated Magnetism and Other Ordered Phases |
| 293 | Ferromagnetic spin correlations in the filled skutterudite SrFe4As12 revealed by 75As NQR-NMR studies | Furukawa, Yuji; Ding, Qing-Ping; Rana, Khusboo; Nishine, Kohei; Hayashi, Jun-ichi; Kawamura, Yukihiro; Sekine, Chihiro | In this study, as the first step for the systematic studies, we have carried out nuclear quadrupole resonance (NQR) and nuclear magnetic resonance (NMR) measurements on the filled skutterudite SrFe 4As 12 in order to investigate the magnetic properties from a microscopic point of view. | Session 20: Correlated Magnetism and Other Ordered Phases |
| 294 | Antiferromagnetic order in Sr(Co1-xNix)2As2 revealed by single-crystal neutron diffraction | Wilde, John; Kreyssig, Andreas; Vaknin, David; N. S., Sangeetha; Li, Bing; Ueland, Benjamin; Johnston, David; McQueeney, Robert; Goldman, Alan | Here we show results from neutron diffraction and magnetization experiments on single-crystals of Sr(Co 1-xNi x) 2As 2. | Session 20: Correlated Magnetism and Other Ordered Phases |
| 295 | Electronic Structure and the Origin of the Phase Transition in BaAg2As2 Revealed by ARPES and REXS Studies | Lou, Xia | To study the mechanism, we applied systematic angle-resolved photoemission spectroscopy (ARPES) combined with resonant elastic soft X-ray scattering (REXS) and identified the exact structural transition and density-wave-like transition in it for the first time. | Session 20: Correlated Magnetism and Other Ordered Phases |
| 296 | Neutron diffraction studies of the composition induced moment reorientation in antiferromagnetically ordered Ca1-xSrxCo2As2 | Li, Bing; N. S., Sangeetha; Wilde, John; Tian, Wei; Kreyssig, Andreas; Ueland, Benjamin; Johnston, David; Goldman, Alan; McQueeney, Robert | Here, we present and discuss quantitative results from neutron and high-energy x-ray diffraction experiments on single crystals with x = 0.25 and 0.40. | Session 20: Correlated Magnetism and Other Ordered Phases |
| 297 | Electrical and Magnetic Properties of Layered CaMn2Bi2 | Blawat, Joanna; Gui, Xin; Nepal, Roshan; Chapai, Ramakanta; Cava, Robert; Xie, Weiwei; Jin, Rongying | Electrical and Magnetic Properties of Layered CaMn2Bi2 | Session 20: Correlated Magnetism and Other Ordered Phases |
| 298 | Electronic Structure and Magnetic Phase Transition in Double Perovskite La2-xNaxMnMoO6 (x=0, 0.5, 1.0, 1.5, 2.0) | Yadav, Dinesh; Belbase, Bishnu; Bhandari, Shalika; Ghimire, Madhav; Kaphle, Gopi Chandra | Here, we investigate the electronic and magnetic properties of this recently synthesized material. We found that consistent with the experiment, for x=1.5, a ferromagnetic (FM) ground state is observed. | Session 20: Correlated Magnetism and Other Ordered Phases |
| 299 | Neutron scattering study of the evolution from ferromagnetism to antiferromagnetism in NaCrSixGe2-xO6 pyroxenes | Tian, Wei; Yan, Jiaqiang; Kolesnikov, Alexander; Sales, Brian | Here we present a systematic neutron scattering study of NaCrSi xGe 2-xO 6 that reveals how the substitution of Ge by Si affects the evolution from ferromagnetism to antiferromagnetism in theses compounds. | Session 20: Correlated Magnetism and Other Ordered Phases |
| 300 | Band structure induced electronic correlations in nickel and iron: van-Hove singularities vs. Earth’s core conditions | Hausoel, Andreas; Karolak, Michael; Sasioglu, Ersoy; Lichtenstein, Alexander; Held, Karsten; Katanin, Andrey; Toschi, Alessandro; Sangiovanni, Giorgio | Here we show with ab-initio calculations of unprecedented accuracy and model studies, that their synergy represents instead the underlying physical mechanism in two of the most important ferromagnets: nickel and iron. | Session 20: Correlated Magnetism and Other Ordered Phases |
| 301 | Study of the Dirac/Weyl candidates (Ce,Nd)Sb(Se,Te) | Chen, Kuan-Wen; Lai, You; Wei, Kaya; Rahn, Marein; Chiu, Yu-Che; Graf, David; Janoschek, Marc; Balicas, Luis; Baumbach, Ryan | Here we present results for other members of this family compounds, including CeSbSe [2], NdSbSe, and NdSbTe. | Session 21: Correlations and Topological States |
| 302 | Importance of electron correlations in understanding the photo-electron spectroscopy and the Weyl character of MoTe2 | Manousakis, Efstratios; Aryal, Niraj | We study the role of electron correlations in the type II Weyl semimetallic candidate ?-MoTe 2 by using density functional theory (DFT) where the on-site Coulomb repulsion (Hubbard U) for the Mo 4d states is included within the DFT+U scheme. | Session 21: Correlations and Topological States |
| 303 | Abelian Topological Phases with Background Electromagnetic Field on Lattice, and Deligne-Beilinson Double Cohomology in Continuum | Chen, Jing-Yuan | In this talk, I introduce a systematic approach to this problem for abelian topological phases, which is to exactly retrieve the spacetime lattice model from the corresponding Chern-Simons theory in the continuum, via the latter’s formal structure known as Deligne-Beilinson double cohomology. | Session 21: Correlations and Topological States |
| 304 | Majorana zero mode on the edge of an interacting quantum wire subject to spin-orbit interaction and transverse magnetic field | Furusaki, Akira; Starykh, Oleg | We revisit the problem of an interacting quantum wire subject to spin-orbit interaction and transverse magnetic field. | Session 21: Correlations and Topological States |
| 305 | Topological exciton insulator phase in two-dimensional semiconductor systems | Lou, Wen-Kai; Yang, Wen; Chang, Kai | Here, We demonstrate theoretically the existence of topological exciton insulating phases in two-dimensional (2D) semiconductor systems. | Session 21: Correlations and Topological States |
| 306 | Full Commuting Projector Hamiltonians of Interacting Symmetry-Protected Topological Phases of Fermions | Tantivasadakarn, Nathanan; Vishwanath, Ashvin | We then turn to 2+1D, and construct the square roots of the Levin-Gu bosonic SPT phase, protected by Z2�Z2F symmetry, in a concrete model of fermions and spins on the triangular lattice. | Session 21: Correlations and Topological States |
| 307 | Origin of Mott insulating behavior and superconductivity in twisted bilayer graphene | Zou, Liujun; Po, Hoi Chun; Vishwanath, Ashvin; Todadri, Senthil | We will present a phenomenological picture of the Mott insulator with intervalley coherence that spontaneously breaks U(1) valley symmetry, and describe a mechanism that selects this order over the competing magnetically ordered states favored by the Hunds coupling. | Session 21: Correlations and Topological States |
| 308 | Coupled wire models on compact manifolds and the entanglement entropy for Abelian and non-Abelian topological orders | Han, Bo; Teo, Chi Yan Jeffrey | We construct coupled wire models for topologically ordered systems on the 2d torus and study the ground state degeneracy, with explicit ground states. | Session 21: Correlations and Topological States |
| 309 | Classification of fermionic symmetry-protected topological phases | Wang, Qing-Rui; Gu, Zhengcheng | We give a systematic construction and classification of fermionic symmetry-protected topological states for generic fermionic symmetry group G_f, which is a central extension of bosonic symmetry group G_b (may contain time reversal symmetry) by the fermion parity symmetry group Z_2^f. For each class in the classification (except those with 2D p+ip chiral superconductor decorations), we construct a fixed-point wave function which admits exactly solvable commuting-projector Hamiltonian. | Session 21: Correlations and Topological States |
| 310 | Inducing and controlling magnetism in the graphene lattice through a trapping potential | Baumann, Karla; Valli, Angelo; Amaricci, Adriano; Capone, Massimo | We solve the model non-perturbatively by means of a inhomogeneous Dynamical Mean-Field Theory. | Session 21: Correlations and Topological States |
| 311 | Fracton fusion and statistics | Ramachandran Pai, Shriya; Hermele, Michael | In this work, we describe fusion and statistical processes in Abelian fracton phases in terms of their gapped excitations. | Session 21: Correlations and Topological States |
| 312 | Hall and Faraday effects in interacting multiband systems | Nourafkan, Reza; Tremblay, Andre-Marie | Here, we derive a formula for the Hall response of interacting multi-band systems with arbitrary band topology and spin-orbit coupling. | Session 21: Correlations and Topological States |
| 313 | Interacting Spin-3/2 Fermions in three-dimensional Luttinger Metal: Phases, Phase Transitions and Global Phase Diagram | Szabo, Andras; Roy, Bitan | In this talk, I will focus on a collection of spin-3/2 excitations, which in three dimensions display a bi-quadratic touching of the valence and conduction bands at the $\Gamma$ point. | Session 21: Correlations and Topological States |
| 314 | Aspects of Three-body Interactions in Generic Fractional Quantum Hall Systems and Impact of Galilean Invariance Breaking | Yang, Bo | We derive full analytic expressions of three-body interactions from Landau level (LL) mixing in fractional quantum Hall (FQH) systems with Schrieffer-Wolff transformation. | Session 21: Correlations and Topological States |
| 315 | Neutron Scattering Studies of superfluid helium confined in preplated nanoporous materials. | Sokol, Paul; Warren, Garfield; Prisk, Timothy; Nichols, Nathan; Del Maestro, Adrian | We will present the results of neutron scattering studies of the excitations of superfluid helium confined in MCM-41 preplated with a monolayer of Argon. | Session 22: Correlations in Helium and Hydrogen |
| 316 | The Damping of a Micro-electromechanical Resonator in the Presence of Quantum Turbulence in He II | Barquist, Colin; Jiang, Wenguang; Gunther, Keegan; Lee, Yoonseok; Chan, Ho Bun | The Damping of a Micro-electromechanical Resonator in the Presence of Quantum Turbulence in He II | Session 22: Correlations in Helium and Hydrogen |
| 317 | The Use of 3He in Obtaining Ultra-Low Temperatures at the NHMFL High B/T Facility | Woods, Andrew; Huan, Chao; Masuhara, Naoto; Xia, Jian-Sheng; Sullivan, Neil | In this talk I will discuss the use of liquid 3He in cooling at the High B/T Facility, experimental platforms developed to make best use of this method, recent experimental results obtained, and potential future developments. | Session 22: Correlations in Helium and Hydrogen |
| 318 | Mass Flux Measurements in Solid 4He. | Rubanskyi, Valentyn; Hallock, Robert | Our most recent experiments show that reducing the interface between superfluid helium in the Vycor rods and solid helium reduces the flux and that significantly blocking the cross section of the channel filled with solid 4He further suppress the flux. | Session 22: Correlations in Helium and Hydrogen |
| 319 | Dynamics of 1D 3He adsorbed in 4He plated MCM-41: NMR Studies | Adams, Johnny; Lewkowitz, Marc; Huan, Chao; Masuhara, Naoto; Sullivan, Neil | We report the results of NMR studies of the dynamics of 3He confined to 1D in the interior of the hexagonal nanochannels of MCM-41. | Session 22: Correlations in Helium and Hydrogen |
| 320 | Measuring Corrections to the Amplitude Mode Masses in Superfluid 3He | Nguyen, Man; Zimmerman, Andrew; Halperin, William | In this work, we employ a simple procedure to incorporate these corrections [1] to the mode which improve the determination of the f-wave pairing strength, (1/x 3). | Session 22: Correlations in Helium and Hydrogen |
| 321 | The Polar Phase of Superfluid 3He in the Limit of Small Anisotropy | Zimmerman, Andrew; Nguyen, Man; Halperin, William | 2 Here, we report evidence for the polar phase in the limit of small impurity anisotropy. | Session 22: Correlations in Helium and Hydrogen |
| 322 | Simplified calculations of the frequencies of Higgs modes in superfluid 3He-B using N-point Pad� approximants | Paliotta, John; Serene, Joseph | We show that perturbed frequencies due to magnetic fields or strong-coupling effects can be calculated on the imaginary axis and the final results can then be obtained, to high accuracy, by N-point Pad� approximants, which greatly simplifies these calculations. | Session 22: Correlations in Helium and Hydrogen |
| 323 | Quantum Monte Carlo simulation of superfluid helium confined inside pre-plated nanoporous materials | Nichols, Nathan; Del Maestro, Adrian; Prisk, Timothy; Warren, Garfield; Sokol, Paul | We will describe how the choice of adsorbate (e.g. argon, neon, krypton) can be modified to obtain different types of helium structures inside the pores. | Session 22: Correlations in Helium and Hydrogen |
| 324 | Anomalous attenuation of piezoacoustic surface waves by liquid helium thin films | Nasyedkin, Kostyantyn; Byeon, Heejun; Lane, Justin; Zhang, Liangji; Beysengulov, Niyaz; Loloee, Reza; Pollanen, Johannes | We report on the experimental observation of an anomalously high attenuation of high frequency surface acoustic waves (SAW) by thin films of liquid 4He [1]. | Session 22: Correlations in Helium and Hydrogen |
| 325 | Elastic Anomaly of Helium, Hydrogen and Neon Films on Disordered Substrate | Makiuchi, Takahiko; Yamashita, Katsuyuki; Tagai, Michihiro; Nago, Yusuke; Shirahama, Keiya | We report systematic elasticity measurements of helium ( 4He and 3He), hydrogen (H 2, HD, D 2) and neon films physisorbed on a porous glass substrate. | Session 22: Correlations in Helium and Hydrogen |
| 326 | Transition in Wave Behavior on a Superfluid Vortex at Large Excitation Amplitude | Zieve, Rena; Spiegelberg, Josephine; Diggs, Andrew | We study a single quantized vortex stretched between a wire and the wall of a cylindrical container. | Session 22: Correlations in Helium and Hydrogen |
| 327 | Molecular mean-squared displacement in solid parahydrogen | Prisk, Timothy; Abernathy, Douglas; Granroth, Garrett; Hanna, Scott; Sherline, Todd; Azuah, Richard | In this presentation, we report new inelastic neutron scattering measurements of |
Session 22: Correlations in Helium and Hydrogen |
| 328 | Heat Capacity Studies of Nanoconfined Hydrogen | Marlowe, Erin; Sokol, Paul | We will present measurements of adsorption isotherms and heat capacity of hydrogen confined in MCM-41. | Session 22: Correlations in Helium and Hydrogen |
| 329 | Higher-order quantum hydrodynamics for supersolids | Heinonen, Vili; Burns, Keaton; Dunkel, Jorn | By going beyond the usually considered quadratic truncations, we derive a systematic higher-order generalization of the Gross-Pitaevskii mean-field model in conceptual similarity with the Swift-Hohenberg theory of pattern formation. | Session 22: Correlations in Helium and Hydrogen |
| 330 | Magnetic-field-tuned superconducting quantum phase transition in highly overdoped Bi2+xSr2-xCuO6+? | Terzic, Jasminka; Baity, Paul; Pokharel, Bal; Stanley, Lily; Popovic, Dragana; Ono, Shimpei | We discuss the nature of the H-field-tuned superconducting quantum phase transition and the high-field ground state, and present the T- H phase diagram for the highly overdoped Bi2201. | Session 23: Cuprates and Related |
| 331 | Scale-Invariant transport in high-temperature superconductors | Shekhter, Arkady; Ramshaw, Brad; Modic, Kimberly; Winter, Laurel; Komiya, Seiki; Ono, Shimpei; Balakirev, Fedor; Betts, Jonathan; Boebinger, Gregory; McDonald, Ross | We report high-magnetic-field (up to 93T) Hall measurements in LSCO cuprates superconductor near critical doping (x=0.20). | Session 23: Cuprates and Related |
| 332 | Optical Thermal Diffusivity Measurement in Bad Metals | Zhang, Jiecheng; Kountz, Erik; Kapitulnik, Aharon; Greene, Richard | We found that the various doping of (Nd/Pr/Sm) 1-xCe xCuO 4 all have T-linear D Q -1. | Session 23: Cuprates and Related |
| 333 | High Temperature Electrical Transport in Electron-Doped Cuprates | Poniatowski, Nicholas; Sarkar, Tarapada; Mandal Sarkar, Pampa; Greene, Richard | We report resistivity and magnetoresistivity (MR) measurements of the electron doped cuprate La 2-xCe 2CuO 4 (LCCO) from 100K to above room temperature and relate our findings to the hole-doped side of the phase diagram. | Session 23: Cuprates and Related |
| 334 | Hall coefficient in two-dimensional metals with spiral magnetic order and application to cuprate high-Tc superconductors | Mitscherling, Johannes; Metzner, Walter | [3] We use the complete expressions to study the importance of a sizable relaxation rate and show that the observed Hall number drop in cuprates can be fitted with realistic parameters. | Session 23: Cuprates and Related |
| 335 | Correlation between scale-invariant normal state resistivity and superconductivity in an electron-doped cuprate | Sarkar, Tarapada; Mandal Sarkar, Pampa; Poniatowski, Nicholas; Chan, Mun Keat; Greene, Richard | We report measurements of the low temperature normal state magnetoresistance (MR) of the n-type cuprate system (LCCO) and find that it is characterized by a linear-in-field behavior, which follows a scaling relation with applied field and temperature, for doping (x) above the putative QCP (x= 0.14). | Session 23: Cuprates and Related |
| 336 | short-range pair density wave in cuprates | Dai, Zhehao; Zhang, Yahui; Todadri, Senthil; Lee, Patrick | We analyze recent STM results on period-8 density wave in the cuprate vortex halo and provide a theory of short-range pair density wave to explain quantum oscillation above Hc2 and the electron gap in the anti-nodal region in underdoped cuprates. | Session 23: Cuprates and Related |
| 337 | Gauge theory for the cuprates near optimal doping | Sachdev, Subir; Scammell, Harley; Scheurer, Mathias; Tarnopolsky, Grigory | We propose a SU(2) gauge theory with fermionic low-energy excitations as an effective field theory for the cuprate high-temperature superconductors. | Session 23: Cuprates and Related |
| 338 | Normal-state optical conductivity and linear resistivity of the cuprates from tightly bound pre-formed pairs | Zou, Long; Jiang, Shengtao; Ku, Wei | We investigate anomalous normal-state in-plane resistivity and optical conductivity of cuprates by using multi-orbital bose-liquid model. | Session 23: Cuprates and Related |
| 339 | Slow magnetic fluctuations in the pseudogap phase of YBa2Cu3Oy | Zhang, Jian; MacLaughlin, Douglas; Ding, Zhaofeng; Tan, Cheng; Bernal, Oscar; Ho, Pei-Chun; Morris, Gerald; Koda, Akihiro; Hillier, Adrian; Cottrell, Stephen; Baker, Peter; Biswas, P. K.; Yang, Yanxing; Zhu, Zihao; Qian, Jun; Wan, Yan; Yao, Xin; Shu, Lei | We report broken time-reversal symmetry in the pseudogap state of underdoped single crystalline YBa 2Cu 3O y using muon spin relaxation technique. | Session 23: Cuprates and Related |
| 340 | Imaging Domains and Domain Walls in High-Temperature Superconductor | Assefa, Tadesse; Cao, Yue; Harder, Ross; Robinson, Ian; Tranquada, John; Gu, Genda | We have pushed Bragg Coherent Diffractive Imaging (BCDI) into the cryogenic regime where most phase transitions in quantum materials reside. | Session 23: Cuprates and Related |
| 341 | What happened at 19% doping in Bi2212: an ARPES perspective | Chen, Sudi; Hashimoto, Makoto; He, Yu; Song, Dongjoon; Xu, Kejun; He, Junfeng; Lu, Donghui; Eisaki, Hiroshi; Shen, Zhixun | In this talk we present a systematic ARPES study across 84 temperature-doping points in Bi2212 near p = 0.19. | Session 23: Cuprates and Related |
| 342 | Anomalous Dimensions for Conserved Currents from Holographic Dilatonic Models to Superconductiv | Phillips, Philip; Limtragool, Kridsanaphong; La Nave, Gabriele | I will show that the anomalous dimension in such cases arises from a fractional electromagnetism[1] that can be thought of as a general loop-hole in Noether’s second theorem. | Session 23: Cuprates and Related |
| 343 | A novel solution of the 2D Hubbard model within a 4-pole approximation: electronic dispersion and Fermi surface evolution | Di Ciolo, Andrea; Avella, Adolfo | We present and characterize a novel solution of the 2D Hubbard model within the Composite Operator Method [1,2] in a 4-pole approximation [3]. | Session 23: Cuprates and Related |
| 344 | DCMP Business Meeting | DCMP Business Meeting | Session 24: DCMP Business Meeting | |
| 345 | Oliver E. Buckley Condensed Matter Prize talk: Elihu Abrahams: pioneer in the physics of disordered electronic systems | Lee, Patrick | In a seminal work with his student Miller, he introduced the network model for hopping conductivity. | Session 25: DCMP Prize Session |
| 346 | Oliver E. Buckley Condensed Matter Prize Talk: Coulomb gap here, there, and everywhere | Shklovskii, Boris | We named this phenomenon the Coulomb gap and showed that it leads to the variable range hopping conductivity which depends on the temperature T as exp[-( T ES/ T) 1/2]. | Session 25: DCMP Prize Session |
| 347 | APS Medal for Exceptional Achievement in Research: Topology and Other Tools in Condensed Matter Physics | Halperin, Bertrand | In my talk, I will present some examples of these applications. | Session 25: DCMP Prize Session |
| 348 | Aneesur Rahman Prize for Computational Physics Talk: Digital Alchemy, Machine Learning and Inverse Design for Self Assembly | Glotzer, Sharon | In this talk, we present a new thermodynamic computational approach to the inverse design of colloidal matter, and demonstrate its use in obtaining colloidal crystals with arbitrary complexity, engineered phase transitions, and target photonic properties. | Session 25: DCMP Prize Session |
| 349 | DCMP/DMP Joint Fellows Reception | DCMP/DMP Joint Fellows Reception | Session 26: DCMP/DMP Joint Fellows Reception | |
| 350 | Understanding quantum materials using strain-sensitive x-ray diffraction imaging | Heremans, Joseph | Here we present work on the development of synchrotron-based, strain-sensitive x-ray imaging techniques which we use to map the local lattice perturbations within diamond and SiC crystals. | Session 27: Defect Spins in Semiconductors |
| 351 | Optically-Addressable Spins in Hexagonal Boron Nitride: Creation, Identification, and Characterization | Exarhos, Annemarie | In this talk, I will describe the optical and magnetic properties of QEs in hBN characterized using confocal fluorescence microscopy on suspended hBN films. | Session 27: Defect Spins in Semiconductors |
| 352 | Diamond Nanomechanical Resonators with Narrow Linewidth NVs | Lekavicius, Ignas; Oo, Thein; Kuzyk, Mark; Wang, Hailin | Here we report on the fabrication of thin mechanical resonators imbedded in a phononic crystal and the measurement of improved optical properties of NVs in those membranes. | Session 27: Defect Spins in Semiconductors |
| 353 | Mechanical rotation via optical pumping of paramagnetic impurities | Zangara, Pablo; Wood, Alexander; Doherty, Marcus; Meriles, Carlos | Here we use a rotationally invariant Hamiltonian to study the spin dynamics of a pair of paramagnetic centers in an insulator � namely, the so-called P1 and NV centers in diamond � close enough to each other to interact via the dipolar coupling. | Session 27: Defect Spins in Semiconductors |
| 354 | Observing the charge state of substitutional nitrogen via nitrogen vacancy magnetometry | Lozovoi, Artur; Daw, Damon; Henshaw, Jacob; Jayakumar, Harishankar; Zangara, Pablo; Dhomkar, Siddharth; Fedder, Helmut; Doherty, Marcus; Meriles, Carlos | Here, we use the NV center as a local probe to examine the ionization of small N s ensembles in type 1b diamond. | Session 27: Defect Spins in Semiconductors |
| 355 | Polarization transfer between electric and nuclear spins at the level anti-crossing of the NV center in diamond | Ivady, Viktor; Abrikosov, Igor; Gali, Adam | We demonstrate that the increasing nuclear spin concentration has a negative impact on the efficiency of nuclear polarization transfer that explains the lack of hyperpolarization in 13C enriched samples. | Session 27: Defect Spins in Semiconductors |
| 356 | First-principle study of spin-strain coupling in defect spin qubits | Ma, He; Ye, Meng; Whiteley, Samuel; Wolfowicz, Gary; Awschalom, David; Galli, Giulia | In this work, we use density functional theory to predict the coupling strength between spin and mechanical degrees of freedom for prototypical defect spin qubits including the nitrogen-vacancy centers in diamond and divacancies in silicon carbide, and we compare our results with recent experiments [1]. | Session 27: Defect Spins in Semiconductors |
| 357 | Exploring solid-state defects with a microwave-modulated spectroscopy technique | Prado Lopes Aude Craik, Diana; Kehayias, Pauli; Greenspon, Andrew; Gadalla, Mina; Walsworth, Ronald; Hu, Evelyn | We have developed a microwave-based spectroscopy technique to determine charge state of nitrogen-vacancy ensembles in diamond. | Session 27: Defect Spins in Semiconductors |
| 358 | Coherent electrical driving of quantum spins via localized magnons | Rustagi, Avinash; Kajale, Shivam; Upadhyaya, Pramey | Here, we propose to utilize spin-orbit induced electrical driving of magnons [Nano Lett. | Session 27: Defect Spins in Semiconductors |
| 359 | Probing Coherent Spin Dynamics of Isolated Exchange Coupled Defects in III-V Semiconductors | McMillan, Stephen; Harmon, Nicholas; Flatt�, Michael | Through low-field magnetoresistance calculations we find that exchange coupled defects generate a resonance feature in the current at critical values of the applied magnetic field, termed “exchange resistance”. | Session 27: Defect Spins in Semiconductors |
| 360 | Backscattering induced by vacancies in the topological insulator phase of graphene | Lewenkopf, Caio; Lima, Leandro | We use a self-consistent recursive Green’s functions technique to calculate the transport quantities and to understand the role of magnetization due to vacancies in the electronic propagation. | Session 28: Defects in Topological Materials |
| 361 | Manipulation and Characterization of the Valley-Polarized Topological Kink States in Graphene-Based Interferometers | Cheng, Shuguang; Liu, Haiwen; Jiang, Hua; Sun, Qing-Feng; Xie, Xincheng | Using an Aharanov-Bohm interferometer composed of domain walls in graphene systems, we study the periodical modulation of a pure valley current in a large range by tuning the magnetic field or the Fermi level. | Session 28: Defects in Topological Materials |
| 362 | Partial lattice defects in higher order topological insulators | Queiroz, Raquel; Fulga, Ion; Avraham, Nurit; Beidenkopf, Haim; Cano, Jennifer | In this work we show that higher-order topological insulators (HOTIs) can, in fact, host a single helical mode along screw or edge dislocations (including step edges) in the absence of weak topological indices. | Session 28: Defects in Topological Materials |
| 363 | Honey, I Shrunk the Transport Geometry, or Carving Micro-Crystals of Topological Insulators for Transport Experiments | Mihaliov, Dmitri; Rakoski, Alexa; Sinha, Shriya; Kurdak, Cagliyan; Rosa, Priscila; Fisk, Zachary; Kang, Boyoun; Song, Myung-suk; Cho, Beongki | We will present challenges associated with sample preparation at the micro crystalline scale. | Session 28: Defects in Topological Materials |
| 364 | Topological gravity, defects, and topological phases protected by both spatial and internal symmetries | Han, Bo; Wang, Huajia; Ye, Peng | In this paper, we explore the topological quantum gravity from the perspective of symmetry-protected topological (SPT) phases. | Session 28: Defects in Topological Materials |
| 365 | Kondo Signatures of a Quantum Magnetic Impurity in Topological Superconductor | Wang, Xiaoqun; Wang, Rui; Su, Wei; Zhu, Jian-Xin; Ting, Chin-Sen; Li, Hai; Chen, Changfeng; Wang, Baigeng | We study the Kondo physics of a quantum magnetic impurity in two-dimensional topological superconductors (TSCs), either intrinsic or induced on the surface of a bulk topological insulator, using a numerical renormalization group technique. | Session 28: Defects in Topological Materials |
| 366 | Impurity-induced bound states as a signature of chiral p-wave superconductivity in Pb1-xSnxTe | Kundu, Sarbajaya; Tripathi, Vikram | In particular, I will introduce two parameter regimes: the normal band gap regime where the subgap bound states are smoothly connected to impurity states in semiconductors, and the inverted band gap regime,where they nontrivially depend on the existence of chiral p-wave superconductivity. | Session 28: Defects in Topological Materials |
| 367 | Fractional Chern insulator edges and layer-resolved lattice contacts | Knapp, Christina; Spanton, Eric; Young, Andrea; Nayak, Chetan; Zaletel, Michael | In this work, we study FCI edges and how they can be used to detect genons. | Session 28: Defects in Topological Materials |
| 368 | Quasiparticle interference and nonsymmorphic effect on a floating band surface state of ZrSiSe | Zhu, Zhen; Song, Fengqi; Lin, Hsin; Ku, Wei; Zheng, Hao; Jia, Jinfeng | Here, we employ scanning tunneling microscopy to measure the quasiparticle interference of the floating band state on ZrSiSe (001) surface and discover rotational symmetry breaking interference, healing effect and anomalous half-missing Umklapp scattering. | Session 28: Defects in Topological Materials |
| 369 | Topological 0D defect states in 3D insulators | Schindler, Frank; Tsirkin, Stepan; Neupert, Titus; Bernevig, Andrei; Wieder, Benjamin | We introduce topological invariants for these states using (nested) Wilson loops and Topological Quantum Chemistry. | Session 28: Defects in Topological Materials |
| 370 | Complete description of symmetry-protected topological properties of SnxPb1-xTeySe1-y topological crystalline insulators with a step edge | Brzezicki, Wojciech; Wysokinski, Marcin; Hyart, Timo | Here we investigate the properties of the low-energy states appearing at the surface atomic steps in Sn xPb 1-xTe ySe 1-y. | Session 28: Defects in Topological Materials |
| 371 | Dynamically Induced Topology in the Fermi Sea | Dahan, Daniel; Grosfeld, Eytan; Seradjeh, Babak | We study the dynamics of topological bound states following their coupling to the Fermi sea of a topologically trivial, gapless lead. | Session 28: Defects in Topological Materials |
| 372 | The influence of 1D topological states on the thermoelectric properties of Bi2Te3 from the perspective of coupled Tomonaga-Luttinger liquids (TLLs). | Chudzinski, Piotr | In this study we show how to overcome these obstacles and then derive an exact analytic formula for Seebeck coefficient within a framework of coupled TLLs. | Session 28: Defects in Topological Materials |
| 373 | Probing the Topological Classification of Bismuth with Topological Defects | Avraham, Nurit; Nayak, Abhay; Reiner, Jonathan; Queiroz, Raquel; Fu, Huixia; Shekhar, Chandra; Felser, Claudia; Yan, Binghai; Beidenkopf, Haim | We use scanning tunneling microscopy to investigate the response of the topological edge mode, in Bismuth, to a topological defect in the form of a screw dislocation. | Session 28: Defects in Topological Materials |
| 374 | Static analogues of driven phases of matter | Mondragon, Ian; Rios, Brahyam; Rodriguez, Boris; Cheng, Meng | We here show that analogues of driven phases can be created as time-independent eigenstates of matter interacting with quantum light. | Session 28: Defects in Topological Materials |
| 375 | Starfish-shaped Cooper pairs with ultrashort antinodal length scales across all doping levels in cuprate superconductors. | Dessau, Daniel | We access the fully causal electronic self-energy utilizing a brand new 2-dimensional method of ARPES analysis [1], which removes the critical limitations of the previous one-dimensional MDC (Momentum Distribution Curve) and EDC (Energy Distribution Curve) methods. | Session 29: Demise of Superconductivity in Overdoped Cuprates |
| 376 | What Makes Cuprate Superconductors so Exceptional? | Bozovic, Ivan | What Makes Cuprate Superconductors so Exceptional? | Session 29: Demise of Superconductivity in Overdoped Cuprates |
| 377 | Density wave as a probe of the full cuprate phase diagram | Hoffman, Jennifer; Webb, Tatiana; Boyer, Michael; Yin, Yi; Chowdhury, Debanjan; He, Yang; Kondo, Takeshi; Takeuchi, Tsunehiro; Ikuta, Hiroshi; Hudson, Eric; Hamidian, Mohammad | Here we use the structure of broken translational symmetry, namely d-form factor charge modulations in (Bi,Pb) 2(Sr,La) 2CuO 6+?, as a probe of the ground state reorganization which occurs at the transition from truncated Fermi arcs to a large Fermi surface. | Session 29: Demise of Superconductivity in Overdoped Cuprates |
| 378 | Insights from specific heat of overdoped cuprates | Storey, James | By considering lifetime effects I show that these observations can be explained by temperature-dependent scattering in the presence of a d-wave energy gap, and a decreasing pairing interaction strength with doping. | Session 29: Demise of Superconductivity in Overdoped Cuprates |
| 379 | Dynes superconductivity and the cuprates | Hlubina, Richard | Making use of the microscopic coherent potential approximation, we have developed a phenomenological description of the so-called Dynes superconductors in which both processes are characterized by separate lifetimes [1]. | Session 29: Demise of Superconductivity in Overdoped Cuprates |
| 380 | Bilayer graphene Josephson junctions with induced spin orbit coupling | Pal, Avradeep; Watanabe, Kenji; Taniguchi, Takashi; Goswami, Srijit | We report the first study of induced superconductivity in such systems by demonstrating the Josephson effect in a series of samples of varying junction lengths (300nm to 1300nm). | Session 30: Devices from 2D Materials — Twisted bilayers |
| 381 | Electron scattering and thermopower in twisted bilayer graphene | Chung, Ting Fung; Xu, Yang; An, Lisha; Witkoske, Evan; Lu, Na (Luna); Chen, Yong | To better understand the effect of VHSs in TBLG, we perform transport experiments in this study. | Session 30: Devices from 2D Materials — Twisted bilayers |
| 382 | Towards a gate-controlled valley-analyzer in bilayer graphene. | Chen, Hao; Martin, Jens | Here, we fabricate such system with four pairs of dual-split gates with optimized geometry and stacking methods. | Session 30: Devices from 2D Materials — Twisted bilayers |
| 383 | Magnetotransport of twisted bilayer transition metal dichalcogenides | Shih, En-Min; Wang, Lei; Ghiotto, Augusto; Rhodes, Daniel; Tan, Cheng; Pasupathy, Abhay; Hone, James | In this study, we report magnetotransport of twisted bilayer transition-metal dichalcogenides (TMDs) and demonstrate how its band structure vary with twisted angle. | Session 30: Devices from 2D Materials — Twisted bilayers |
| 384 | Charge-transfer insulation in twisted bilayer graphene. | Mellado, Paula; Rademaker, Louk | We studied the real space structure of states in twisted bilayer graphene at the “magic angle” ? = 1.08 ?. | Session 30: Devices from 2D Materials — Twisted bilayers |
| 385 | Phases of a phenomenological model of twisted bilayer graphene | Dodaro, John; Kivelson, Steven; Schattner, Yoni; Sun, Xiao-Qi; Wang, Chao | We propose a lattice scale two-band generalized Hubbard model as a caricature of the electronic structure of twisted bilayer graphene. | Session 30: Devices from 2D Materials — Twisted bilayers |
| 386 | Characterization of atomic scale lattice reconstruction in twisted van der Waals interfaces of layered material | Kim, Philip | In this presentation, we will discuss the engineered atomic scale reconstruction at twisted vdW interfaces using electron microscopy, optical spectroscopy, and electrical transport. | Session 30: Devices from 2D Materials — Twisted bilayers |
| 387 | Transport measurements of correlated insulating states in twisted bilayer graphene | Sharpe, Aaron; Fox, Eli; Barnard, Arthur; Finney, Joe; Watanabe, Kenji; Taniguchi, Takashi; Kastner, Marc; Goldhaber-Gordon, David | Here we present transport measurements studying these correlated states. | Session 30: Devices from 2D Materials — Twisted bilayers |
| 388 | Dynamic band structure in twisted bilayer graphene near the magic angle | Mao, Jinhai; Jiang, Yuhang; Lai, Xinyuan; Watanabe, Kenji; Taniguchi, Takashi; Andrei, Eva | Far from the magic angle, we observe two van hove singularity (VHS) peaks whose separation allows us to extract the interlayer coupling. | Session 30: Devices from 2D Materials — Twisted bilayers |
| 389 | Effect of vacancies on the electronic and optical properties on twisted bilayer graphene | Culchac, Francisco; Capaz, Rodrigo | We systematically study the effects of a random distribution of vacancies on the electronic and optical properties of twisted bilayer graphene (TBLG), using a tight-binding method. | Session 30: Devices from 2D Materials — Twisted bilayers |
| 390 | Scanning tunneling microscopy of van Hove singularities in small angle twisted bilayer graphene | Kemmer, Jeannette; Choi, Youngjoon; Arora, Harpreet Singh; Polski, Robert; Zhang, Yiran; Ren, Hechen; Watanabe, Kenji; Taniguchi, Takashi; Nadj-Perge, Stevan | We use scanning tunneling microscopy and spectroscopy to track the positions of van Hove singularities originating from the flat bands in gated TBG for the range of twist angles from 1� to 3�. | Session 30: Devices from 2D Materials — Twisted bilayers |
| 391 | Pressure Induced Compression of Flatbands in Twisted Bilayer Graphene | Chittari, Bheema Lingam; Leconte, Nicolas; Javvaji, Srivani; Jung, Jeil | We investigate the bandwidth compression due to out of plane pressure of the moire flatbands near charge neutrality in twisted bilayer graphene for a continuous range of small rotation angles of up to ?2.5�. | Session 30: Devices from 2D Materials — Twisted bilayers |
| 392 | Optical measurements of twisted bilayer transition metal dichalcogenides | Ghiotto, Augusto; Wang, Lei; Shih, En-Min; Rhodes, Daniel; Tan, Cheng; Pasupathy, Abhay; Hone, James; Dean, Cory | In this study, we report optical measurements of twisted bilayer transition-metal dichalcogenides (TMDs) and demonstrate how its band structure vary with twist angle. | Session 30: Devices from 2D Materials — Twisted bilayers |
| 393 | DTC signatures in NV Centers: Initial Discovery and Late-breaking Results | Lukin, Mikhail | DTC signatures in NV Centers: Initial Discovery and Late-breaking Results | Session 31: Discrete Time Crystal Signatures in Driven Spin Systems |
| 394 | Can Prethermal Regimes explain the lastest observations of DTC signatures in driven spin systems? | Nayak, Chetan | Can Prethermal Regimes explain the lastest observations of DTC signatures in driven spin systems? | Session 31: Discrete Time Crystal Signatures in Driven Spin Systems |
| 395 | Observation of Discrete-Time-Crystal Signatures in an Ordered Dipolar Many-Body System | Rovny, Jared; Blum, Robert; Barrett, Sean | In this work, we exploited both the long coherence times of our sample, and our ability to use NMR pulse sequences to edit the spin Hamiltonian. | Session 31: Discrete Time Crystal Signatures in Driven Spin Systems |
| 396 | What NMR detection of DTC signatures may be telling us. | Khemani, Vedika | What NMR detection of DTC signatures may be telling us. | Session 31: Discrete Time Crystal Signatures in Driven Spin Systems |
| 397 | Temporal Order in Periodically Driven Spins in small NMR spin Clusters | Ganesh Jaya, Sreejith; Pal, Soham; Nishad, Naveen; T S, Mahesh | We present the results of experimental studies on the magnetization response of star-shaped clusters of initially unentangled N=4, 10, and 37 nuclear spin-1/2 moments when subjected to inexact pi-pulse sequences. | Session 31: Discrete Time Crystal Signatures in Driven Spin Systems |
| 398 | Configuration-Controlled Many-Body Localization and the Mobility Emulsion | Schecter, Michael; Iadecola, Thomas; Das Sarma, Sankar | We show that eigenstates in this phase can be described in terms of interacting emergent Ising spin degrees of freedom suspended in a mixture with inert charge-like degrees of freedom (doublons), and thus dub it a mobility emulsion (ME). | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 399 | Many-body localization and the localization transition in quasiperiodic potentials | Schneider, Ulrich | I will briefly review our experimental realization of many-body localization of interacting fermions in the presence of quasiperiodic disorder in 1D and 2D, with a particular focus on slow relaxation close to the localization transition. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 400 | Beyond many body localization: A Hamiltonian with simultaneous area law and log law eigenstates. | Luo, Di; Yu, Xiongjie; Clark, Bryan | In this work, we show that a spin-disordered Hubbard model has both a large number of area-law eigenstates as well as a large number of eigenstates whose entanglement scales logarithmically with system size (log-law). | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 401 | Probing Entanglement in a Many-Body-Localized System | Schittko, Robert; Lukin, Alexander; Rispoli, Matthew; Tai, Ming; Kaufman, Adam; Choi, Soonwon; Khemani, Vedika; Leonard, Julian; Greiner, Markus | We realize such a many-body-localized system in a disordered Bose-Hubbard chain and characterize its entanglement properties through particle fluctuations and correlations. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 402 | Many-body localization as a large family of localized ground states | Dupont, Maxime; Mac�, Nicolas; Laflorencie, Nicolas | Using large scale DMRG simulations [1], we show that in the presence of disorder, a localized ground state is a very good approximation for an MBL excited state of a different Hamiltonian that differs only by its local disorder configuration. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 403 | Kosterlitz-Thouless scaling at many-body delocalization phase transitions | Dumitrescu, Philipp; Parameswaran, Siddharth; Goremykina, Anna; Serbyn, Maksym; Vasseur, Romain | We propose a scaling theory for the many-body localization (MBL) phase transition in one dimension, building on the idea that the transition proceeds via a `quantum avalanche’. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 404 | Quantum coherence, phases of matter and many-body localization | Campos Venuti, Lorenzo; Zanardi, Paolo | In this talk I will report upon an unexpected link between these information theoretic concepts, and well known condensed matter quantities. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 405 | Global and short-range entanglement properties in excited, many-body localized spin chains | West, Colin; Wei, Tzu-Chieh | We explore the use of short-range entanglement measures, such as concurrence and negativity, and global entanglement measures such as geometric entanglement, as indicators of many-body localization (MBL) in the spectra of disordered spin systems. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 406 | Multiscale entanglement clusters at the many-body localization phase transition | Herviou, Loic; Bera, Soumya; Bardarson, Jens | We study numerically the formation of entanglement clusters across the many-body localization phase transition. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 407 | Universality class of many-body localization transition on 1D system with both random and quasiperiodic potentials | Zhang, Shixin; Yao, Hong | By investigating the system with both QP and random potentials via real-space RG, we directly show that the QP-induced MBL criticality is robust against small randomness. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 408 | Constructing local integrals of motion in the many-body localized phase | Kerala varma, Vipin; Oganesyan, Vadim; Pekker, David; Raj, Abhishek; Gopalakrishnan, Sarang | We consider a many-body localized spin system and its description by the so-called l-bit Hamiltonian. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 409 | Apparent slow dynamics in the ergodic phase of a driven many-body localized system without extensive conserved quantities | Lezama Mergold Love, Tal�a; Bera, Soumya; Bardarson, Jens | We describe and employ a numerical technique based on the fast Walsh-Hadamard transform that allows us to perform an exact time evolution for large systems and long times. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 410 | Phase diagram and observables of many-body localization in transmon circuit arrays | Orell, Tuure; Michailidis, Alexios; Serbyn, Maksym; Silveri, Matti | In this work, we investigate the potential use of superconducting transmon circuits as a platform for experimental studies of the many-body localization [1]. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 411 | Long-range resonances and the meltdown of many-body localization | Villalonga, Benjamin; Clark, Bryan | In this work, we attempt to numerically identify the presence of resonances in the ergodic-MBL transition. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 412 | Critical Dynamics at the Many-Body-Localized Phase Transition | Rispoli, Matthew; Lukin, Alexander; Schittko, Robert; Kim, Sooshin; Kwan, Joyce; Tai, Ming; Leonard, Julian; Greiner, Markus | Here, we study many-body localization in a 1-D system of interacting bosons with quasi-periodic disorder. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 413 | Avoiding Ergodicity: Localization in Clean Interacting Systems | Baum, Yuval; van Nieuwenburg, Evert; Refael, Gil | We proposed the idea that the essential ingredient for MBL is localization, which does not necessarily mean disorder. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 414 | Dephasing Beyond the Markovian Limit; Implications for Many-Body Localization | Davis, Seth; Foster, Matthew | Using explicit calculations and scaling arguments, we will describe results beyond the Markovian limit in 1D and 2D. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 415 | Many Body Localization Transition in Systems with Correlated Disorder | Sensarma, Rajdeep; Samanta, Abhisek; Chakraborty, Ahana | We use two different models of correlated disorder and map out the phase diagram in the correlation-disorder plane. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 416 | Activating many-body localization in solids by driving | Lenarcic, Zala; Altman, Ehud; Rosch, Achim | We propose to detect the fingerprints of an underlying MBL phase by measuring the variation of local temperatures in the resulting steady state. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 417 | Flow Equations for Many-Body Localisation: Dynamics and Dimensionality | Thomson, Steven; Schiro, Marco | Here, we present a semi-analytic flow equation approach that is capable of simulating large system sizes and of computing the real-time dynamics of observables and correlation functions. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 418 | Localization in Fractonic Random Circuits | Ramachandran Pai, Shriya; Pretko, Michael; Nandkishore, Rahul | In this talk, I will describe a new mechanism for many-body localization, making use of ideas drawn from the field of fractons. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 419 | Statistics of entanglement spectrum across MBL to ergodic transition. | Samanta, Abhisek; Damle, Kedar; Sensarma, Rajdeep | We show how the statistics of entanglement spectra change across the transition between a many body localized phase and an ergodic phase of an interacting disordered system. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 420 | Localization in an interacting system with two degrees of freedom per site: Is charge disorder alone sufficient to localize the Hubbard model or is spin disorder also necessary? | Wortis, Rachel; Leipner-Johns, Brandon | We consider the Hubbard model with both charge and spin disorder. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 421 | Many-body localization in a multifractal fermionic chain | Mac�, Nicolas; Laflorencie, Nicolas; Alet, Fabien | We study the many-body localization (MBL) properties of a chain of interacting fermions subject to a deterministic quasiperiodic on-site potential following the Fibonacci sequence. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 422 | Many body localization in the presence of a central qudit | Ng, Nathan; Kolodrubetz, Michael | We consider a many-body localized system coupled globally to a central d-level system. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 423 | Stability of quasiperiodic chains to quantum avalanches | Chandran, Anushya; Crowley, Philip | We show that weakly interacting chains with quasiperiodic potentials violate this conjecture because the sparse local structure of the l-bits prevents thermalization near an ergodic region. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 424 | Hilbert space properties of the many-body localization problem: from full ergodicity to multifractality | Mac�, Nicolas; Alet, Fabien; Laflorencie, Nicolas | In this work, using exact diagonalization techniques up to L=24 spin-1/2 particles (i.e. Hilbert space of size N=2.7 millions) we address the ergodicity properties in the underlying N-dimensional complex networks spanned by various computational bases. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 425 | Entanglement, dynamics and breakdown of many-body localization in current driven system | Banerjee, Sumilan; Panda, Animesh | Motivated by these questions, we model a current driven interacting disorder system through a non-Hermitian Hamiltonian and study the entanglement properties of its eigenstates. | Session 32: Disorder and Localization in AMO Systems: Many-body Localization |
| 426 | Discrete time crystals in long-range interacting systems | Yao, Norman | In this context, I will describe how long-range interactions can stabilize pre-thermal time-translation symmetry breaking in one dimensional systems (even in the absence of disorder). | Session 33: Disorder and Localization in AMO Systems: Time Crystals, Diffusion, Quantum Chaos |
| 427 | NMR observations of discrete time crystalline signatures in an ordered crystal of ammonium dihydrogen phosphate | Blum, Robert; Rovny, Jared; Barrett, Sean | We present signatures of DTC order [3,4] in an NMR system of 31P spins in an oriented crystal of ammonium dihydrogen phosphate (ADP), a clean sample with multiple dipolar-coupled spin species ( 1H, 31P, 14N). | Session 33: Disorder and Localization in AMO Systems: Time Crystals, Diffusion, Quantum Chaos |
| 428 | Beyond discrete time crystal signatures: hidden coherence, causes of decay, and the first �discrete time crystal echo� | Rovny, Jared; Blum, Robert; Barrett, Sean | We have shown this signature in an NMR system of 31P spins on a crystal lattice, with little to no disorder [3,4]. | Session 33: Disorder and Localization in AMO Systems: Time Crystals, Diffusion, Quantum Chaos |
| 429 | Spatial-Translation-Induced Discrete Time Crystals | Mizuta, Kaoru; Takasan, Kazuaki; Nakagawa, Masaya; Kawakami, Norio | Therefore, we propose new DTCs named “spatial-translation-induced DTCs”(STI-DTCs), which is realized by spatial translation and its symmetry breaking[4]. | Session 33: Disorder and Localization in AMO Systems: Time Crystals, Diffusion, Quantum Chaos |
| 430 | Quantum diffusion in the strong tunneling regime | Paul, Nisarga; Amir, Ariel | We discuss the dynamics of a quantum-mechanical wavepacket in a noisy environment (i.e., time-dependent disorder), modeled using a tight-binding Hamlitonian. | Session 33: Disorder and Localization in AMO Systems: Time Crystals, Diffusion, Quantum Chaos |
| 431 | Quantum-Spin Diffusion Driven by Ergodic and Non-Ergodic Finite Spin Baths | Hahn, Walter; Dobrovitski, Viatcheslav | We investigate spin diffusion driven by a finite quantum spin bath in a system accessible for solid-state NMR experiments; namely polycrystalline L-alanine. | Session 33: Disorder and Localization in AMO Systems: Time Crystals, Diffusion, Quantum Chaos |
| 432 | Signatures of Quantum Chaos in Classically Non-Chaotic Systems | Rozenbaum, Efim; Bunimovich, Leonid; Galitski, Victor | We use this diagnostic to show that a new kind of drastic disagreement can occur between quantum and classical counterparts of the same model. | Session 33: Disorder and Localization in AMO Systems: Time Crystals, Diffusion, Quantum Chaos |
| 433 | The longest-lived current in a quantum chaotic spin chain | Mong, Arnold; Huse, David | To approximate this numerically, we limit the length of the Pauli strings and introduce an artificial nonunitary damping that acts only on the longest Pauli strings that we keep, and solve exactly for the longest-lived current operator in this approximation. | Session 33: Disorder and Localization in AMO Systems: Time Crystals, Diffusion, Quantum Chaos |
| 434 | Quantum Chaos for the Unitary Fermi Gas from the Generalized Boltzmann Equations | Zhang, Pengfei | We take the method of generalized Boltzmann equations derived from the augmented Keldysh approach. | Session 33: Disorder and Localization in AMO Systems: Time Crystals, Diffusion, Quantum Chaos |
| 435 | Chaos and integrability in experimentally accessible all-to-all spin models | Bentsen, Gregory; Scaffidi, Thomas; Bulchandani, Vir; Potirniche, Ionut-Dragos; Schleier-Smith, Monika; Altman, Ehud | We construct the integrals of motion explicitly and propose a method to directly measure their characteristics in the experiment. | Session 33: Disorder and Localization in AMO Systems: Time Crystals, Diffusion, Quantum Chaos |
| 436 | Scrambling in the Dicke model | Alavirad, Yahya; Hosseini Lavasani, Seyed Ali | Here we use the Majorana Fermion representation of spin $1/2$ systems to study quantum chaos in the Dicke model. | Session 33: Disorder and Localization in AMO Systems: Time Crystals, Diffusion, Quantum Chaos |
| 437 | Quantum inverse freezing and mirror-glass order | Iadecola, Thomas; Schecter, Michael | Here we show that mirror-symmetric disorder in an interacting quantum system can invert this paradigm, yielding spontaneous breaking of mirror symmetry only at finite energy density and giving rise to �mirror-glass� order. | Session 33: Disorder and Localization in AMO Systems: Time Crystals, Diffusion, Quantum Chaos |
| 438 | Out of Time Ordered Correlators in the Random Field XX Spin Chain | Riddell, Jonathon; Sorensen, Erik | We study out of time order correlations, C(x,t) and entanglement growth in the random field XX model with open boundary conditions using the exact Jordan-Wigner transformation to a fermionic Hamiltonian. | Session 33: Disorder and Localization in AMO Systems: Time Crystals, Diffusion, Quantum Chaos |
| 439 | Connections between classical mean field models with glassy dynamics and quantum SYK models | Kurchan, Jorge | Connections between classical mean field models with glassy dynamics and quantum SYK models | Session 34: Dynamics in Glassy Systems |
| 440 | On the trap model description of glassy dynamics | Baity-Jesi, M.; Biroli, Giulio; Cammarota, Chiara; Marinari, Enzo | In this talk I will discuss about recent studies of the equilibrium and out-of equilibrium dynamics of a number of models with rough potential energy landscapes. | Session 34: Dynamics in Glassy Systems |
| 441 | Statistical properties of barriers and activated dynamics in mean-field models of glasses | Ros, Valentina; Biroli, Giulio; Cammarota, Chiara | In this talk I will discuss a framework to compute the statistical distribution of stationary points of random landscapes, making use of a replicated version of the Kac-Rice formula. | Session 34: Dynamics in Glassy Systems |
| 442 | Glassy dynamics: mean-field theory and beyond | Szamel, Grzegorz | I will present a simple theory for the dynamics of mean-field-like models of glass forming liquids. | Session 34: Dynamics in Glassy Systems |
| 443 | New computational approaches to dynamics in complex landscapes | Reichman, David | New computational approaches to dynamics in complex landscapes | Session 34: Dynamics in Glassy Systems |
| 444 | Temperature Dependence of Charge Transport in an Undoped Weyl Semimetal � Y2Ir2O7 | LaBarre, Patrick; Dong, Lianyang; Trinh, Jennifer; Siegrist, Theo; Ramirez, Arthur | Here we show that, in hydrothermally grown polycrystalline samples of the WSM Y 2Ir 2O 7, ? = ?0T-4 over four orders of magnitude in ?. | Session 35: Electronic Correlations in Topological Materials |
| 445 | Higher-Order Symmetry Enriched Topological Phases | Hickey, Ciar�n; Dwivedi, Vatsal; Eschmann, Tim; Trebst, Simon | In this talk, we discuss exactly such higher-order symmetry enriched topological phases, including an example of an exactly solvable spin model with a quantum spin liquid ground state that indeed exhibits topologically protected corner modes, a hallmark of second-order TIs. | Session 35: Electronic Correlations in Topological Materials |
| 446 | Topological Phases of the Interacting SSH and Kitaev Models on the Bethe Lattice | Wong, Patrick; Mitchell, Andrew | Here we study generalizations of these models on the Bethe lattice, showing that topological phases with bulk zero-modes can be realized in higher dimensions. | Session 35: Electronic Correlations in Topological Materials |
| 447 | Interacting multi-channel topological boundary modes in a quantum Hall valley system | Randeria, Mallika; Agarwal, Kartiek; Feldman, Benjamin; Ding, Hao; Ji, Huiwen; Cava, Robert; Sondhi, Shivaji; Parameswaran, Siddharth; Yazdani, Ali | Here we use a scanning tunneling microscope (STM) to directly visualize the spontaneous formation of boundary modes, within a sign-changing topological gap, at domain walls between different valley-polarized quantum Hall phases on the surface of bismuth. | Session 35: Electronic Correlations in Topological Materials |
| 448 | Interesting behavior of magnetoresistance in single crystals of CeBi | Kuthanazhi, Brinda; Jo, Na Hyun; Xiang, Li; Wu, Yun; Budko, Sergey; Kaminski, Adam; Canfield, Paul | Interesting behavior of magnetoresistance in single crystals of CeBi | Session 35: Electronic Correlations in Topological Materials |
| 449 | Orbital Edelstein effect from spontaneous symmetry breaking | Massarelli, Geremia; Wu, Bryce; Paramekanti, Arun | Motivated by these developments, we examine a toy model in which a crystal exhibits such an orbital Edelstein effect upon symmetry breaking via density-wave order which reduces it to a gyrotropic crystal class. | Session 35: Electronic Correlations in Topological Materials |
| 450 | Observation of Double Weyl Phonons in Parity-Breaking FeSi | Miao, Hu; Zhang, Tiantian; Wang, Le; Meyers, Derek; Said, Ayman; Wang, Yilin; Shi, Youguo; Weng, Hongming; Fang, Zhong; Dean, Mark | By comparing the experimental data with theoretical calculations, we make the first observation of double Weyl points in FeSi, which will be an ideal material to explore emerging bosonic excitations and its topologically nontrivial properties. | Session 35: Electronic Correlations in Topological Materials |
| 451 | Berryogenesis: self-induced Berry flux and spontaneous non-equilibrium magnetism | Rudner, Mark; Song, Justin | In this talk I will discuss a new mechanism through which a driven interacting system subject to a time-reversal symmetric driving field can spontaneously magnetize [1]. | Session 35: Electronic Correlations in Topological Materials |
| 452 | Higher angular momentum band inversions in two dimensions | Venderbos, Jorn; Hu, Yichen; Kane, Charles | We introduce a series of minimal lattice models which realize higher angular momentum band inversions. | Session 35: Electronic Correlations in Topological Materials |
| 453 | Real-space recipes for interacting topological crystalline states | Fang, Chen; Song, Zhida; Qi, Yang | We present a unified scheme for constructing all topological crystalline states, bosonic and fermionic, free and interacting, from real-space building blocks and connectors. | Session 35: Electronic Correlations in Topological Materials |
| 454 | Non-Topological Majorana Zero Modes in Inhomogeneous Spin Ladders | Konik, Robert; Robinson, Neil; Altland, Alex; Egger, Reinhold; Gergs, Niklas; Li, Wei; Schuricht, Dirk; Tsvelik, Alexei; Weichselbaum, Andreas | We show that the coupling of homogeneous Heisenberg spin-1/2 ladders in different phases leads to the formation of interfacial zero energy Majorana bound states. | Session 35: Electronic Correlations in Topological Materials |
| 455 | Symmetry-protected exceptional rings in two-dimensional correlated systems | Yoshida, Tsuneya; Peters, Robert; Kawakami, Norio; Hatsugai, Yasuhiro | In particular, we analyze correlated systems with chiral symmetry in equilibrium where the imaginary-part of the self-energy induces the non-Hermitian phenomenon. | Session 35: Electronic Correlations in Topological Materials |
| 456 | Large magneto-elastoresistance in WTe2 | Jo, Na Hyun; Wang, Lin-Lin; Orth, Peter; Drachuck, Gil; Bud’ko, Sergey; Canfield, Paul | We present a detailed analysis of this phenomenon combining results from DFT calculations and quantum oscillation measurements. | Session 35: Electronic Correlations in Topological Materials |
| 457 | Topological Order and Subsystem Symmetry | May-Mann, Julian; Hughes, Taylor | Motivated by this obervation, we show that subsystem symmetries can lead to topological features remenescent of those found in topological gauge theories. | Session 35: Electronic Correlations in Topological Materials |
| 458 | Topological properties of mirror symmetric Kondo half-metals | Kimura, Kazuhiro; Yoshida, Tsuneya; Kawakami, Norio | In this study, we demonstrate that even in the absence of spin U(1) symmetry, ferromagnetic phases with mirror symmetry can have the topological properties. | Session 35: Electronic Correlations in Topological Materials |
| 459 | Chiral SDW and d + id superconductivity in the magic-angle twisted bilayer-graphene | Liu, Cheng-Cheng; Zhang, Li-Da; Chen, Wei-Qiang; Yang, Fan | We model the newly synthesized magic-angle twisted bilayer-graphene superconductor with two px,y-like Wannier orbitals on the superstructure honeycomb lattice, where the hopping integrals are constructed via the Slater-Koster formulism by symmetry analysis. | Session 36: Electronic Interactions in Twisted Bilayers |
| 460 | Multiple topological transitions in magic angle twisted bilayer graphene I | Hejazi, Kasra; Liu, Chunxiao; Shapourian, Hassan; Chen, Xiao; Balents, Leon | A continuum model for describing such systems is used in our study, and instead of observing flat bands only at the magic angle, we notice that the bands remain almost flat within a small range around the magic angle, where multiple topological transitions occur. | Session 36: Electronic Interactions in Twisted Bilayers |
| 461 | Electron-phonon superconductivity and Landau levels in twisted bilayer graphene | Lian, Biao; Wang, Zhijun; Xie, Fang; Bernevig, Andrei | In the first half of the presentation, we show the analytical calculation of the electron-phonon coupling in twisted bilayer graphene (TBG), which was recently experimentally observed to exhibit superconductivity around the magic twist angle $\theta\approx 1.05^\circ$. | Session 36: Electronic Interactions in Twisted Bilayers |
| 462 | Magic angle twisted bilayer graphene: strong correlations and Landau level | Chaudhary, Gaurav; MacDonald, Allan | We show that the Landau level structure near neutrality is highly sensitive to self-energy modifications of magic angle electronic structure. | Session 36: Electronic Interactions in Twisted Bilayers |
| 463 | High temperature quantum transport in 2D moir� superlattices | Krishna Kumar, Roshan; Wallbank, John; Chen, Xi; Auton, Gregory; Holwill, Matthew; Mishchenko, Artem; Novoselov, Konstantin; Falko, Vladimir; Geim, Andre | In this talk, we review recent experimental results on high-temperature electron transport studies in heterostructures based on 2D moir� superlattices. | Session 36: Electronic Interactions in Twisted Bilayers |
| 464 | Direct Imaging of Magnetic Structure in Twisted Bilayer Graphene with Scanning nanoSQUID-On-Tip Microscopy | Serlin, Marec; Tschirhart, Charles; Polshyn, Hryhoriy; Zhu, Jiacheng; Huber, Martin; Young, Andrea | I will present imaging data from our 4.2K nSOT microscope on graphite-gated twisted bilayers near the flat band condition and discuss the implications for the physics of the commensurate resistive states. | Session 36: Electronic Interactions in Twisted Bilayers |
| 465 | Multiple topological transitions in magic angle twisted bilayer graphene II | Liu, Chunxiao; Hejazi, Kasra; Balents, Leon | Following this work, we investigate the low energy FB structure in the entire moir� Brillouin zone (mBZ) as twisting angle is changed; the effect of transverse lattice distortion is also considered. | Session 36: Electronic Interactions in Twisted Bilayers |
| 466 | Role of lattice relaxations in magic angle graphene | Carr, Stephen; Fang, Shiang; Zhu, Ziyan; Kaxiras, Efthimios | We introduce an ab initio k-dot-p model that includes lattice relaxations which can exactly reproduce DFT tight-binding electronic band-structures, but with the ability to continously tune the twist angle. | Session 36: Electronic Interactions in Twisted Bilayers |
| 467 | Localized eigenstates in dodecagonal twisted bilayer graphene | Park, Moon Jip; Kim, Heeseung; Lee, SungBin | In this talk, we report emergence of localized eigenstates in the dodecagonal quasicrystals without additional random disorder. | Session 36: Electronic Interactions in Twisted Bilayers |
| 468 | Atmospheric Pressure Chemical Vapor Deposition of Twisted Bilayer Graphene on Copper Foil Substrates | Hanson, Lucas; Tilak, Nikhil; Altvater, Michael; Ellsworth, Brian; Andrei, Eva | Using a quartz tube and tube furnace, copper foil substrates, argon and hydrogen forming gas, and a methane carbon feedstock, we studied a variety of different APCVD recipes to determine the optimal growth parameters for depositing graphene bilayers. | Session 36: Electronic Interactions in Twisted Bilayers |
| 469 | Strong Correlations in Magic Angle Twisted Bilayer Graphene Investigated by Scanning Tunneling Microscopy | Kerelsky, Alexander; McGilly, Leo; Chen, Shaowen; Yankowitz, Matthew; Xian, Lede; Kennes, Dante; Rubio, Angel; Dean, Cory; Pasupathy, Abhay | Using gated scanning tunneling microscopy and spectroscopy (STS), we directly locally investigate twisted bilayer graphene around the magic angle. | Session 36: Electronic Interactions in Twisted Bilayers |
| 470 | Scanning tunneling microscopy of gated twisted bilayer graphene: Suppression of tunneling density of states due to electronic correlations | Choi, Youngjoon; Kemmer, Jeannette; Arora, Harpreet Singh; Polski, Robert; Zhang, Yiran; Ren, Hechen; Watanabe, Kenji; Taniguchi, Takashi; Nadj-Perge, Stevan | We used scanning tunneling microscopy and spectroscopy to measure gated TBG with angles ranging from 0.9� to 2�. | Session 36: Electronic Interactions in Twisted Bilayers |
| 471 | Constructing low-energy models for the electronic structure of twisted bilayer graphene | Goodwin, Zachary; Mostofi, Arash; Lischner, Johannes | To study the angle dependent electronic properties, we have developed a tight binding model for tBLG. | Session 36: Electronic Interactions in Twisted Bilayers |
| 472 | Intralayer and interlayer electron-phonon interactions in twisted bilayer graphene | Pimenta, Marcos; Righi, Ariete; da Silva Neto, Eliel; Gadelha, Andreij; Campos, Leonardo; Moutinho, Marcus; Venezuela, Pedro; Chiu, Po-Wen | In this work we report on the possibility of using resonance Raman spectroscopy to distinguish intralayer and interlayer electron-phonon (el-ph) interactions in twisted bilayer graphene (TBG). | Session 36: Electronic Interactions in Twisted Bilayers |
| 473 | Lattice relaxation and energy band modulation in twisted bilayer graphene | NAM, NGUYEN; Koshino, Mikito | We develop an effective continuum theory to describe the lattice relaxation in general TBGs and obtain the optimized structure to minimize the total energy. | Session 36: Electronic Interactions in Twisted Bilayers |
| 474 | Physical Properties of Low Dimensional Ternary Transition-Metal Sulfides | Benjamin, Shermane; Drenner, Alisa; Baker, Mitch; Smith, Michael; Neumeier, John | In this work, polycrystalline SrTa 2S 5 and BaTa 2S 5 samples were synthesized. | Session 37: Electronic States in S and Te Chalcogenides |
| 475 | Bulk and topological effects on the optical conductivity of BaNiS2 | Lobo, Ricardo | Here, I will discuss the temperature dependence of the optical conductivity (?) of this material. | Session 37: Electronic States in S and Te Chalcogenides |
| 476 | Photoemission study on a special type of multiferroics: GaV4S8 & GeV4S8 | Singh, Amol; Li, Jung-Han; Liao, Yen-Fa; Huang, Hsiao-Yu; Chu, Yen-Yi; Chang, Jing; Tsuei, Ku-Ding; Zhang, Lunyong; Cheong, Sang-Wook; Van Veenendaal, Michel; Huang, Di-Jing | We conducted hard X-ray photoemission to study the electronic structure of GaV 4S 8 & GeV 4S 8 single crystals and to investigate the valency of V in these compounds. | Session 37: Electronic States in S and Te Chalcogenides |
| 477 | Orbital-Order Driven Ferroelectricity and Dipolar Relaxation Dynamics in Multiferroic GaMo4S8 | Geirhos, Korbinian; Krohns, Stephan; Nakamura, Hiroyuki; Waki, Takeshi; Tabata, Yoshikazu; K�zsm�rki, Istv�n; Lunkenheimer, Peter | Orbital-Order Driven Ferroelectricity and Dipolar Relaxation Dynamics in Multiferroic GaMo4S8 | Session 37: Electronic States in S and Te Chalcogenides |
| 478 | Noise spectroscopy study of metal-insulator transition in CuIr2S4 | Adhikari, Dasharath; Ali, Ahmed; Alsaqqa, Ali; Kilcoyne, Colin; Matsumoto, Nobuhiro; Ganapathy, Sambandamurthy | By employing low-frequency electrical noise spectroscopy, we observe that the power spectral density (PSD) of the resistance fluctuations peaks around T c likely due to the formation of domains of opposite phase. | Session 37: Electronic States in S and Te Chalcogenides |
| 479 | Anomalous conductivity near percolative metal-insulator transition in monolayer MoS2 | Moon, Byoung Hee; Bae, Jung Jun; Han, Gang Hee; Kim, Hyun; Choi, Homin; Lee, Young Hee | Here, we report the opposite behavior, and anomalous metallic to insulating phase transition driven by a voltage at low voltage regime in monolayer molybdenum disulfide. | Session 37: Electronic States in S and Te Chalcogenides |
| 480 | Optical Thermal Measurements of Thermal Diffusivity in 1T-TaS2 | Kountz, Erik; Zhang, Jiecheng; Kapitulnik, Aharon | We use a photo-thermal microscope for high resolution thermal diffusivity and optical reflectivity measurements. | Session 37: Electronic States in S and Te Chalcogenides |
| 481 | Real space imaging of tuneable magnetic order in Fe1+xTe with x>0.12 | Trainer, Christopher; Yim, Chi Ming; Wahl, Peter | We have conducted a spin-polarized scanning tunnelling microscopy study on samples of FeTe with different levels of excess Iron concentrations by in-situ prepared magnetic tips [2]. | Session 37: Electronic States in S and Te Chalcogenides |
| 482 | Visualizing uniaxial-strain-manipulation of antiferromagnetic domains in Fe1+yTe using spin-polarized scanning tunneling microscope | Friedman, Joel; Kavai, Mariam; Giannakis, Ioannis; Leshen, Justin; Zajdel, Pawel; Aynajian, Pegor | Here we use a novel home-built uniaxial-strain device integrated into our variable temperature scanning tunneling microscope (STM) that enables one to controllably manipulate in-plane uniaxial strain in the samples and probe their electronic response at the atomic scale. | Session 37: Electronic States in S and Te Chalcogenides |
| 483 | Dimensional crossover in a van der Waals ferromagnet detected by spin correlation driven distortions | Ron, Alon; Zoghlin, Eli; Balents, Leon; Wilson, Stephen; Hsieh, David | Here we demonstrate high-multipole nonlinear optical polarimetry as a sensitive and mode selective probe of SRO induced distortions using CrSiTe 3 as a testbed. | Session 37: Electronic States in S and Te Chalcogenides |
| 484 | Thermal Expansion in Ba3Zr2S7 | Koocher, Nathan; Klein, Ryan; Altman, Alison; Freedman, Danna; Rondinelli, James | Here, we evaluate the structural, lattice dynamical, and thermodynamic properties of Ruddlesden-Popper chalcogenide Ba 3Zr 2S 7 using the self-consistent quasi-harmonic approximation within density functional theory. | Session 37: Electronic States in S and Te Chalcogenides |
| 485 | Charge density patterns in spin-selectively photoexcited interacting fermions | Koehler, Thomas; Paeckel, Sebastian; Manmana, Salvatore | We describe the formation of charge-density patterns induced by spin-selective photoexcitations of interacting fermionic systems with an underlying magnetic microstructure. | Session 37: Electronic States in S and Te Chalcogenides |
| 486 | Response of FeSe to in-plane anisotropic strain | Hicks, Clifford; Bartlett, Jack; Steppke, Alexander; Hosoi, Suguru; Shibauchi, Takasada; Mackenzie, Andrew | Response of FeSe to in-plane anisotropic strain | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 487 | Nonequilibrium dynamics of local lattice distortions in FeSe | Konstantinova, Tatiana; Wu, Lijun; Abeykoon, Milinda; Petrovic, Cedomir; Wang, Xijie; Zhu, Yimei; Wang, Aifeng | We report the study of the local crystal structure of FeSe and its connection to electronic nematicity using ultrafast electron diffraction, x-ray diffraction, and transmission electron microscopy. | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 488 | Character of excitonic insulator phase in a transition metal dichalcogenide 1T-TiSe2. | Bok, Jin Mo; Choi, Han-Yong | We revisit the question of the transition metal dichalcogenide 1 T-TiSe 2 charge density wave (CDW) state being an excitonic insulator. | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 489 | Intrinsic Insulating Ground State in Transition Metal Dichalcogenide TiSe2 | Campbell, Daniel; Eckberg, Chris; Zavalij, Peter; Paglione, Johnpierre | Intrinsic Insulating Ground State in Transition Metal Dichalcogenide TiSe2 | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 490 | Folded superstructure and degeneracy-enhanced band gap in the weak-coupling charge density wave system 2H?TaSe2 | Li, Yiwei; Jiang, Juan; Yang, Haifeng; Prabhakaran, Dharmalingam; liu, zhongkai; Yang, Lexian; Chen, Yulin | Using high-resolution angle-resolved photoemission spectroscopy (ARPES), we have mapped out the reconstructed electronic structure in the commensurate charge-density-wave (CDW) state of quasi-two-dimensional transition metal dichalcogenide 2H?TaSe 2. | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 491 | Observation of anomalous electron relaxation in optically excited 1T-TaSe2 | Zhang, Yingchao; Shi, Xun; You, Wenjing; Tao, Zhensheng; Rossnagel, Kai; Bauer, Michael; Kapteyn, Henry; Murnane, Margaret | In this work, we present a series of anomalous behaviors observed in the electron relaxation in the charge density wave (CDW) material 1 T-TaSe 2. | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 492 | Spinon Fermi Surface in a Cluster Mott Insulator Model on a Triangular Lattice and Possible Application to 1T-TaS2 | He, Wenyu; Xu, Xiao Yan; Chen, Gang; Law, Kam Tuen; Lee, Patrick | We derive a two-dimensional XXZ spin-1=2 model with a four-spin ring exchange term to describe the effective low energy physics of a monolayer 1T-TaS 2, where the effective spin-1/2 degrees of freedom arises from the Kramers degenerate spin-orbital states on each star of David. | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 493 | Ultrafast electron calorimetry to uncover new transient states in charge density wave and magnetic materials | Shi, Xun; You, Wenjing; Zhang, Yingchao; Tao, Zhensheng; Oppeneer, Peter; Wu, Xianxin; Thomale, Ronny; Tengdin, Phoebe; Chen, Cong; Zusin, Dmitriy; Gentry, Christian; Blonsky, Adam; Keller, Mark; Rossnagel, Kai; Bauer, Michael; Kapteyn, Henry; Murnane, Margaret | Here we present a new ultrafast electron calorimetry technique to map the laser-driven phase space of materials. | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 494 | Terahertz spectroscopy of excitonic insulator candidate Ta2NiSe5 | Dawson, Robert; Larkin, Timofei; Hoeppner, Marc; Takayama, Tomohiro; Isobe, Masahiko; Takagi, Hidenori; Keimer, Bernhard; Boris, Alexander | Here we present measurements of the terahertz and far-infrared optical conductivity of Ta 2NiSe 5, which show that at temperatures far below Tc a thermally-activated Drude peak gradually develops inside the optical band gap Egop = 160 meV. | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 495 | Cooperative Exciton-Phonon Bose-Einstein Condensation in an Excitonic Insulator | Baldini, Edoardo; Wang, Yao; Zong, Alfred; Lee, Changmin; Chowdhury, Debanjan; Lu, Yangfan; Takayama, Tomohiro; Takagi, Hidenori; Demler, Eugene; Gedik, Nuh | Here, we reveal that a cooperative exciton-phonon mechanism lies instead at the origin of the condensate in TNS. | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 496 | Time- and Angle-Resolved Photoemission Study on the Excitonic Insulator Candidate Ta2NiSe5 | Zhang, Wentao | In this talk, we will present the electronic evidence of quenching the excitonic insulating state and a hidden semimetallic state upon excited by a strong infrared laser pulse in the excitionic insulator candidate Ta2NiSe5. | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 497 | Exciton Mott transition revisited | Guerci, Daniele; Capone, Massimo; Fabrizio, Michele | The results that we present [1] are in accordance with experiments and allow identifying the key parameter that controls the nature of the transition: the magnitude of the exciton binding energy. | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 498 | A Description of Phases with Induced Hybridisation at Finite Temperatures | Golosov, Denis | We show that a possible description (including the phase space integration measure) is provided by the on-site density matrix parametrisation. | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 499 | Gutzwiller Molecular Dynamics Simulation using Second-Moment Approximation | Zadeh, Pedrom; Chern, Gia-Wei | Here we demonstrate significant improvement of the GMD efficiency using the second-moment approximation. | Session 38: Electronic States in Se Chalcogenides: Including Excitonic Behavior |
| 500 | Evolution of the Electronic Structure of MoTe2 under Pressure | Hu, Yajian; Chan, Yuk Tai; Lai, Kwing To; Ho, Kin On; Guo, Xiaoyu; Yip, King Yau; Goh, Swee Kuan; Aoki, Yuji; Matsuda, Tatsuma | In this work, we present the magneto-electronic transport study of MoTe 2 under pressure. | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 501 | Crystal structure and electronic structure of non-centrosymmetrical trigonal PtBi2 | Jiang, Wenxiang; Zhu, Fengfeng; Li, Ping; Ma, Haiyang; Sun, Haohua; Yang, Zhongqiang; Liu, Canhua; Guan, Dandan; Jia, Jinfeng; Luo, Weidong; Qian, Dong | ARPES measurement gives powerful evidences in this paper that different band structures between two types of cleaved surface are clearly observed. | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 502 | Spin-Resolved Electronic Response to the Phase Transition in MoTe2 | Weber, Andrew; R��mann, Philipp; Xu, Nan; Muff, Stefan; Fanciulli, Mauro; Magrez, Arnaud; Bugnon, Philippe; Berger, Helmuth; Plumb, Nicholas; Shi, Ming; Bluegel, Stefan; Mavropoulos, Phivos; Dil, J. | Spin-Resolved Electronic Response to the Phase Transition in MoTe2 | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 503 | Investigation of the magnetic Weyl semimetal candidate Co3Sn2S2 by ARPES. | Belopolski, Ilya; Cochran, Tyler; Liu, Enke; Su, Yu-Hsin; Yin, Jiaxin; Chang, Guoqing; Zhang, Songtian Sonia; Guguchia, Zurab; Felser, Claudia; Hasan, Zahid | We observe a strong photon energy dependence consistent with out-of-plane kz dispersion, even at moderate VUV photon energies. | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 504 | Surface resonances of topological origin in bcc iron | Yazyev, Oleg; Gos�lbez Mart�nez, Daniel; Aut�s, Gabriel | In this work, we investigate the surface-state signatures of the topological nature of these Fermi surface pockets. | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 505 | Sharp Orientation-dependent Quantum Oscillations in HoPtBi | Roncaioli, Connor; Saraf, Prathum; Eo, Yun Suk; Kim, Hyunsoo; Paglione, Johnpierre | In this study we expand this investigation to HoPtBi, a magnetic analog to YPtBi with an AFM ground state and a paramagnetic state above 1.2K. | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 506 | Observation of surface Dirac dispersion in transition metal dipnictides | Dhakal, Gyanendra; Hosen, Md Mofazzel; Chiu, Wei-Chi; Singh, Bahadur; Dimitri, Klauss; Wang, Baokai; Kabir, Firoza; Sims, Christopher; Regmi, Sabin; Lin, Hsin; Kaczorowski, Dariusz; Bansil, Arun; Neupane, Madhab | Our systematic electronic structures analysis reveals the termination dependent electronic structure in these compounds. | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 507 | ARPES measurements on Dirac nodal-line semimetal candidate TiRhAs | Li, Hang; Yan, Dayu; Le, Congcong; Fu, Binbin; Shi, Youguo; Ding, Hong; Qian, Tian | By the soft X-ray ARPES, we systemetically studied the band structure of TiRhAs and observed a single nodal ring at kx=0 plane in BZ. | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 508 | Observation of Yamaji Magic Angles in Bismuth Nanowires | Huber, Tito; Nikolaeva, Albina; Konopko, Leonid | We present angle-dependent transverse magnetoresistance (TMR) oscillation measurements of small diameter ( 50 nm ) bismuth nanowires where electronic transport is dominated by the surface, rather than the bulk in the core of the nanowire, because of quantum confinement. | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 509 | Topological Line-Like Bound States in the Continuum | Takeichi, Manabu; Murakami, Shuichi | In this study, we propose a new type of BIC protected by the winding number, which is one of the topological invariants. | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 510 | Scanning tunneling spectroscopy studies of the topological states in the Dirac metal Hf2Te2P | Boyle, Timothy; Rossi, Antonio; Carlson, Peter; Miller, Moira; Zhao, Jingtai; Walker, Morgan; Taufour, Valentin; Vishik, Inna; Da Silva Neto, Eduardo | In this study we use scanning tunneling spectroscopy (STS) to measure the electronic band structure of the material. | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 511 | A Consistent View of the Samarium Hexaboride Surface Terminations | Herrmann, Hannes; Hlawenka, Peter; Siemensmeyer, Konrad; Weschke, Eugen; Shitsevalova, Natalya; Gab�ni, Slavomir; Flachbart, Karol; Rader, Oliver; Sterrer, Martin; Rienks, Emile | In this paper we tackle one of these apparent contradictions: Researchers using scanning tunneling microscopy [3,4] have reached different conclusions on the surface terminations than those using photoemission spectroscopy [5]. | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 512 | Disentangling orbital and spin characteristics of surface-derived states in Dirac nodal line semimetals | WANG, XIAOXIAO; Chen, Jiahua; Zheng, Mingtian; Wu, Shilong; Sumida, Kazuki; Yoshikawa, Tomoki; Menshchikova, Tatiana; Rusinovip, Igor; Schwier, Eike; Miyamoto, Koji; Nurmamat, Munisa; Okuda, Taichi; Shimada, Kenya; Novak, Mario; Chulkov, Evgueni; Kimura, Akio | In this work, we explore surface states of nonsymmorphic semimetals with lifted band degeneracy at the symmetry points. | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 513 | Controlling Spin-Polarized Currents on the Surface of Topological Insulators | Ciocys, Samuel; Morimoto, Takahiro; Gotlieb, Kenneth; Hussain, Zahid; Analytis, James; Moore, Joel; Lanzara, Alessandra | Here we reveal a technique to generate long-lived spin-currents of arbitrary geometry with tunable magnitude and duration on the surface of Bi 2Se 3 topological insulators. | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 514 | Interaction of coherent phonons with spin-orbit coupled surface states | Sobota, Jonathan; Soifer, Hadas; Kirchmann, Patrick; Shen, Zhixun | Here we use time- and angle-resolved photoemission spectroscopy (trARPES) to investigate electron-phonon coupling in a model system: the Rashba-split surface state of the semimetal Antimony (Sb). | Session 39: Electronic Structures of Weyl Semimetals and Topological Insulators |
| 515 | Quantum Oscillations in Kondo Insulators | Li, Lu | Here, we report a notable exception in an insulator �ytterbium dodecaboride (YbB 12). | Session 40: Emergent Phenomena of Mixed Valence Kondo Insulators |
| 516 | Fermi surfaces in Kondo insulators | Sebastian, Suchitra | Fermi surfaces in Kondo insulators | Session 40: Emergent Phenomena of Mixed Valence Kondo Insulators |
| 517 | A Physical-Chemical Understanding of Samarium Hexaboride | McQueen, Tyrel | A Physical-Chemical Understanding of Samarium Hexaboride | Session 40: Emergent Phenomena of Mixed Valence Kondo Insulators |
| 518 | Mixed valence insulators with neutral Fermi surfaces | Todadri, Senthil | I will describe a new phase of matter—composite exciton Fermi liquid— a mixed valence insulator with a three dimensional fermi-surface of a neutral fermion, that we name the “composite exciton”. | Session 40: Emergent Phenomena of Mixed Valence Kondo Insulators |
| 519 | Quantum Oscillation from in-gap states in Kondo insulators | Shen, Huitao | In this talk, we present the most direct explanation to this novel phenomenon��quantum oscillation comes from in-gap quasiparticles. | Session 40: Emergent Phenomena of Mixed Valence Kondo Insulators |
| 520 | Expanding American Leadership in Quantum Information Science | Taylor, Jacob | Expanding American Leadership in Quantum Information Science | Session 41: Enabling Quantum Leap: National Quantum Initiative Special Outreach Session |
| 521 | Developing our Quantum Future | Svore, Krysta | Developing our Quantum Future | Session 41: Enabling Quantum Leap: National Quantum Initiative Special Outreach Session |
| 522 | Physics community input to federal QIS legislation | Slakey, Francis | Physics community input to federal QIS legislation | Session 41: Enabling Quantum Leap: National Quantum Initiative Special Outreach Session |
| 523 | Enabling Quantum Leap | Sapochak, Linda | Enabling Quantum Leap | Session 41: Enabling Quantum Leap: National Quantum Initiative Special Outreach Session |
| 524 | Opportunities at the entanglement frontier | Preskill, John | Opportunities at the entanglement frontier | Session 41: Enabling Quantum Leap: National Quantum Initiative Special Outreach Session |
| 525 | Exactly Solvable Majorana-Anderson Impurity Models | Ganesh, Shankar; Maciejko, Joseph | We introduce exactly solvable Majorana-Anderson impurity models that describe an interacting Anderson impurity (i) immersed in tight-binding lattices of Majorana modes in one and two dimensions, (ii) coupled to the Majorana end mode of a Kitaev chain, and (iii) coupled to the edge mode of a chiral p-wave superconductor. | Session 42: Exotic Electronic States in Topological Systems |
| 526 | Tuning Many-Body Interactions in a Thin Topological Insulator | Dale, Nicholas; Nguyen, Alexander; Latzke, Drew; Koirala, Nikesh; Shibayev, Pavel; Moon, Jisoo; Oh, Seongshik; Lanzara, Alessandra | We investigate in Photoemission Spectroscopy the surface states of a thin Topological Insulator Bi 2Se 3 on SrTiO 3 using temperature as a knob to tune electron-electron interactions. | Session 42: Exotic Electronic States in Topological Systems |
| 527 | Surface band bending on cleaved strongly correlated topological insulators | Matt, Christian; Pirie, Harris; Paz, Wendel; Palacios, Juan; Larson, Daniel; Hamidian, Mohammad; Hoffman, Jennifer | We thus explain the discrepancy between large-area measurements that average over multiple band-shifted domains and atomically-resolved measurements. | Session 42: Exotic Electronic States in Topological Systems |
| 528 | Band topology in twisted bilayer graphene | Po, Hoi Chun; Zou, Liujun; Todadri, Senthil; Vishwanath, Ashvin | We argue that the Dirac character of the relevant states endows the nearly flat bands with a nontrivial band topology, which forbids any fully symmetric tight-binding description for the nearly flat bands alone. | Session 42: Exotic Electronic States in Topological Systems |
| 529 | Magnetic structure of the antiferromagnetic Weyl semimetal candidates Mn3(Ge/Sn) | Chen, Youzhe; Gaudet, Jonathan; Marcus, Guy; kiyohara, Naoki; Nugroho, Agustinus; Zhao, Yang; Nakatsuji, Satoru; Broholm, Collin | To determine the structure, we report polarized neutron diffraction studies on Mn 3X (X=Sn,Ge). | Session 42: Exotic Electronic States in Topological Systems |
| 530 | A topological classification of molecules and chemical reactions with and without interactions | Muechler, Lukas | In this talk, we propose a topological classification of molecules and their chemical reactions with and without many-body interactions. | Session 42: Exotic Electronic States in Topological Systems |
| 531 | Spin-wave excitations in the antiferromagnetic Weyl semimetal candidates Mn3Ge and Mn3Sn | Gaudet, Jonathan; Chen, Youzhe; Marcus, Guy; Muhammad, Ikhlas; kiyohara, Naoki; Nugroho, Agustinus; Nakatsuji, Satoru; Stone, Matthew; Soda, Minoru; Masuda, Takatsugu; Broholm, Collin | Our analysis reveals linear dispersive modes that are gapped by ~ 5 meV and have an energy bandwidth of ~ 80 meV. | Session 42: Exotic Electronic States in Topological Systems |
| 532 | Field theory of incompressible topological quantum liquids in higher dimensions | Nikolic, Predrag | I will discuss a derivation of field theories that describe quantum dynamics of topological defects in a broad range of topologically ordered phases. | Session 42: Exotic Electronic States in Topological Systems |
| 533 | Possible 3-dimensional Topological Excitonic Insulator in a Semimetal under Magnetic Field | Pan, Zhiming; Shindou, Ryuichi | Motivated by a recent graphite experiment under high magnetic field, we introduce an interacting electron model with a pair of electron pocket and hole pocket under magnetic field. | Session 42: Exotic Electronic States in Topological Systems |
| 534 | Coexistence of metallic edge states and antiferromagnetic ordering in correlated topological insulators | Sangiovanni, Giorgio; Amaricci, Adriano; Valli, Angelo; Capone, Massimo; Budich, Jan; Trauzettel, Bj�rn | We investigate the emergence of antiferromagnetic ordering and its effect on the helical edge states in a quantum spin Hall insulator, in the presence of strong Coulomb interaction [1-5]. | Session 42: Exotic Electronic States in Topological Systems |
| 535 | Kondo Hole Scattering in the Strongly Correlated Topological Insulator SmB6 | Pirie, Harris; Liu, Yu; Cocklin, Sagen; Mascot, Eric; Chen, Pengcheng; Saha, Shanta; Wang, Xiangfeng; Paglione, Johnpierre; Hamidian, Mohammad; Morr, Dirk; Hoffman, Jennifer | Here we use scanning tunneling microscopy and spectroscopy to image the interaction between a Kondo hole and the topological surface state in SmB 6. | Session 42: Exotic Electronic States in Topological Systems |
| 536 | Pulsed field studies of Kondo insulator YbB12 | Xiang, Ziji; Kasahara, Yuichi; Asaba, Tomoya; Lawson, Benjamin; Tinsman, Colin; Chen, Lu; Sato, Yuki; Iga, Fumitoshi; Singleton, John; Matsuda, Yuji; Li, Lu | Here we show the results of magnetoresistance and proximity detector oscillator (PDO) measurements in YbB 12 in pulsed magnetic fields up to 65 T. SdH oscillations are observed both above and below the field-induced insulator-metal (I-M) transition. | Session 42: Exotic Electronic States in Topological Systems |
| 537 | Coupled-wire models of non-Abelian topological orders in 3D | Raza, Syed; Teo, Jeffrey | In this work, we study 3D non-Abelian topological order via coupled-wire construction. | Session 42: Exotic Electronic States in Topological Systems |
| 538 | Study of hysteretic magnetotransport of SmB6 using local and non-local Corbino disk techniques. | Eo, Yun Suk; Metz, Tristin; Kim, Hyunsoo; Fuhrman, Wesley; Saha, Shanta; Wang, Xiangfeng; Chamorro, Juan; Koohpayeh, Seyed; McQueen, Tyrel; Fuhrer, Michael; Paglione, Johnpierre | Motivated by the growing interest in the role of disorder and impurities in bulk SmB 6, we revisit the surface transport, including the hysteresis features, using Corbino disk structures on flux- and floating zone-grown samples with small impurity concentrations (e.g., Gd, Ni, and Fe). | Session 42: Exotic Electronic States in Topological Systems |
| 539 | Correlation Driven Topological Insulator to Weyl Semimetal Transition in Actinide System UNiSn | Ivanov, Vsevolod; Savrasov, Sergey | We use a modern electronic structure method combining density functional theory of band electrons with dynamical self-energies of strongly correlated states to predict that two well known phases of actinide compound UNiSn, a paramagnetic semiconducting and antiferromagnetic metallic, correspond to Topological Insulator (TI) and Weyl semimetal (WSM) phases of topological quantum matter. | Session 42: Exotic Electronic States in Topological Systems |
| 540 | Solid state realizations of Sachdev-Ye-Kitaev models | Franz, Marcel | In this talk I will review some of these developments and describe the recent efforts to bring the family of SYK models closer to experimental reality. | Session 43: Exotic Majorana Physics and Beyond |
| 541 | Approximating the Sachdev-Ye-Kitaev model with Majorana wires | Chew, Aaron; Essin, Andrew; Alicea, Jason | I will discuss a potential solid-state implementation based on a quantum dot coupled to an array of topological superconducting wires hosting Majorana zero modes. | Session 43: Exotic Majorana Physics and Beyond |
| 542 | Majorana Multiplexing | Peng, Yang | Majorana Multiplexing | Session 43: Exotic Majorana Physics and Beyond |
| 543 | Quantum Engineering of Majorana Fermions | Morr, Dirk | In this talk, I provide several examples for the quantum engineering of Majorana fermions in MSH systems [1,2]. | Session 43: Exotic Majorana Physics and Beyond |
| 544 | The Majorana-Hubbard Model | Affleck, Ian | I will present results on the interesting phase diagrams, which includes supersymmetric critical points, in both one and two dimensions. | Session 43: Exotic Majorana Physics and Beyond |
| 545 | Spin-wave excitations, confinement, and coupling in high-quality organic-based magnetic structures | Chilcote, Michael | Here, we present the synthesis of a new class of organic-based magnetic nanostructures consisting of nanowires of V[TCNE] x that assemble along the ridges of a grooved substrate. | Session 44: Exotic Physics of Multi-functional Organic Materials |
| 546 | Signatures of quantum dipole liquid in an organic Mott insulator ?-(BEDT-TTF)Hg(SCN)2Br | Drichko, Natalia | We show that this spectroscopic response of a quantum dipole liquid is qualitatively different from a response of molecular Mott insulators with no on-site charge degree of freedom. | Session 44: Exotic Physics of Multi-functional Organic Materials |
| 547 | The Organic Materials Database – OMDB: a novel framework for functional materials prediction | Geilhufe, Richard | We present the organic materials database – OMDB, a freely accessible electronic and magnetic structure database for previously synthesized 3-dimensional organic crystals, available at https://omdb.diracmaterials.org [1]. | Session 44: Exotic Physics of Multi-functional Organic Materials |
| 548 | Superconductivity in potassium-doped organic materials | Lin, Hai-Qing | Here, we report the systematic studies of the crystal structures, charge transfer, electronic structures, electron-phonon interactions, magnetism, electronic correlations, and pressure effects in potassium-doped organic materials. | Session 44: Exotic Physics of Multi-functional Organic Materials |
| 549 | Giant Rashba-splitting in 2D organic-inorganic halide perovskites measured by optical modulation spectroscopies | Vardeny, Zeev | We have employed a plethora of ultrafast transient, electro-absorption magneto-optical spectroscopies, and theoretical calculations for studying the primary (excitons) and long-lived (free-carriers) photoexcitations in thin films of 2D perovskite, namely (C 6H 5C 2H 4NH 3) 2PbI 4 [1]. | Session 44: Exotic Physics of Multi-functional Organic Materials |
| 550 | Giant magnetoresistance in BaMn2Pn2 (Pn = As, Sb, Bi) | Huynh, Khuong; Ogasawara, Takuma; Matsushita, Stephane Yu; Tahara, Taimu; Kida, Takanori; Hagiwara, Masayuki; Arcon, Denis; Tanigaki, Katsumi | Here we describe a new GMR in BaMn 2Pn 2�s with the following features [1,2]: (1) the magnitudes of the unique negative GMR are larger than 98 %, being comparable with those of other exotic GMR systems, (2) GMR exhibits a very unusual angular under the rotation of magnetic fields, (3) GMR is band selective in sign, showing negative and positive signs for hole- and electron-like carriers, respectively. | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 551 | Hall effects in giant magnetoresistance system BaMn2Bi2 | Ogasawara, Takuma; Huynh, Khuong; Matsushita, Stephane Yu; Tahara, Taimu; Kida, Takanori; Hagiwara, Masayuki; Arcon, Denis; Tanigaki, Katsumi | Hall effects in giant magnetoresistance system BaMn2Bi2 | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 552 | Effect of Chemical Substitutions on the Extreme Magnetoresistance and Topological State of PtSn4 | Hallas, Alannah; Huang, Chien-Lung; Morosan, Emilia | In this talk, we will present our studies of the electronic and topological properties of these compounds and comment on their relationship to PtSn 4. | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 553 | Charge transport in doped SrTiO3 | Kumar, Abhishek; Maslov, Dmitrii | Within the same model, we showed that the next-order correction to T 2 term is T 6 which is due to interaction of electrons with four TO phonons. | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 554 | Boundary layer theory for quantum Hall hydrodynamics | Ganeshan, Sriram; Abanov, Alexander; Can, Tankut; Monteiro, Gustavo | In this talk, we consider non-dissipative two-dimensional broken parity fluids with odd viscosity and magnetic field with a free surface boundary condition. | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 555 | Dynamics of the Phase Separated States in the Double Exchange Model | Luo, Jing; Chern, Gia-Wei | We present large-scale simulations of spin dynamics in the phase-separated states of the one-orbital double-exchange model. | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 556 | Detecting fractional Chern insulators through circular dichroism | Repellin, Cecile; Goldman, Nathan | Here, we demonstrate that the fractional nature of the quantized Hall conductance, a fundamental characteristic of FQH states, could be finely detected in ultracold gases through a circular-dichroic measurement, namely by measuring the energy absorbed by the atomic cloud upon a circular drive. | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 557 | Bridging Hubbard Model Physics and Quantum Hall Physics in ABC Trilayer Graphene/h-BN moir\’e superlattice | Zhang, Yahui; Todadri, Senthil | In this talk I will focus on the moire superlattice formed by ABC stacked trilayer graphene aligned with a hexagonal boron nitride substrate (TG/h-BN). | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 558 | Non-Abelian quasiholes in lattice Moore-Read states and parent Hamiltonians | Wildeboer, Julia; Manna, Sourav; Sierra, German; Nielsen, Anne E. B. | By use of Metropolis Monte Carlo simulations, we analyze the features of the quasiholes, such as their size, shape, charge, and braiding properties. | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 559 | Theory of magnon transport in quantum Hall ferromagnet | Huang, Chunli; MacDonald, Allan | Motivated by these observations, we present a simple theoretical model to study edge-current induced torque — the coupled dynamics of itinerant spin-polarized edge states and insulating bulk magnons. | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 560 | Effective field theory of a vortex lattice in a bosonic superfluid | Moroz, Sergej; Hoyos, Carlos; Benzoni, Claudio; Son, Dam | Using boson-vortex duality, we formulate a low-energy effective theory of a two-dimensional vortex lattice in a bosonic Galilean-invariant compressible superfluid. | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 561 | Electronic Spectral functions, ?(T) and Raman response in the 2-d t-J model | Mai, Peizhi; Shastry, B | We study the two-dimensional t-J model with a second neighbor hopping parameter t’, in a broad range of doping ? using a closed set of equations from the Extremely Correlated Fermi Liquid (ECFL) theory. | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 562 | Transport, multifractality and breakdown of single-parameter scaling in quasiperiodic systems. | Sutradhar, Jagannath; Mukerjee, Subroto; Pandit, Rahul; Banerjee, Sumilan | We study the transport in 1d Aubry-Andre model, and its generalizations to 2d and 3d, which show significant deviations from single-parameter scaling theory providing a broad demarcation between QPS and RS. | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 563 | Pairing correlations in the incoherent phase of quantum Hall bilayers? | Eisenstein, James; Pfeiffer, Loren; West, Kenneth | In this talk we will discuss recent transport and interlayer tunneling spectroscopy measurements which demonstrate the importance of interlayer Coulomb interactions in the incoherent phase. | Session 45: Exotic Transport Properties: Magnetoresistance, Quantum Hall, and Others |
| 564 | Semi-Quantized Pumping and Spin-Orbit Torque in Topological Dirac Semimetals | Misawa, Takahiro; Nomura, Kentaro | We study the spin/charge transport phenomena and magnetization switching in a topological Dirac semimetal attached to a ferromagnetic insulator. | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 565 | Disordered fermionic quantum critical points | Yerzhakov, Hennadii; Maciejko, Joseph | We study the effect of short-range quenched disorder on the semimetal-superconductor quantum phase transition in a model of two-dimensional Dirac semimetal with N flavors of two-component Dirac fermions, using perturbative renormalization group methods at one-loop order in 4-? spatial and ? ? time dimensions. | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 566 | Chirality Josephson current in inversion-asymmetric Weyl semimetals | Zhang, Songbo; Erdmenger, Johanna; Trauzettel, Bj\” orn | In this report, I will talk about Josephson junctions based on inversion-asymmetric but time-reversal symmetric Weyl semimetals under the influence of Zeeman fields. | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 567 | Generalized Triple-Component Fermions: Lattice Model, Fermi arcs and Anomalous Transport | Nandy, Snehasish; Manna, Sourav; Calugaru, Dumitru; Roy, Bitan | In this talk we will show simple tight-binding models for such spin-1 excitations in a cubic lattice and address the symmetry protection of the generalized triple-component nodes. | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 568 | Magnetic field induced valley polarization in a Weyl semimetal with tilted cones. | Bertrand, Simon; Cote, Rene; Garate, Ion | We present a theory of the optical conductivity in time-reversal symmetric Weyl semimetals with tilted cones placed under strong magnetic fields. | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 569 | Thermoelectric transport in torsional strained Weyl semimetals | Munoz, Enrique; Soto Garrido, Rodrigo | We recently 1 studied the electronic transport properties in Weyl semimetals submitted to the combined eects of torsional mechanical strain and magnetic field, showing that this conguration induces a node-polarization eect on the current that can be used to measure the torsion angle from transmission experiments. | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 570 | “First-Principles Studies of Topological Semimetal Features in the Nonpolar Phase of Ferromagnetic Hexgonal Manganites YXO3 (X=V-Co)” | Weber, Sophie; Griffin, Sinead; Neaton, Jeffrey | In particular we find that YVO 3 and YCrO 3 have nodal lines near the Fermi level due a band inversion which can be tuned via biaxial strain. | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 571 | Topological nodal phases in non-Hermitian systems with parity-time and parity-particle-hole symmetries | Okugawa, Ryo; Yokoyama, Takehito | We study band degeneracy in non-Hermitian systems with parity-time and parity-particle-hole symmetries. | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 572 | Berry curvature and Hall viscosities in an anisotropic Dirac semi-metal | Pena-Benitez, Francisco; Saha, Kush; Surowka, Piotr | We investigate parity-odd non-dissipative transport in an anisotropic Dirac semi-metal in two spatial dimensions. | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 573 | Duality between dielectricity and diamagnetism in Dirac materials in analogy with quantum electrodynamics | Maebashi, Hideaki; Ogata, Masao; Fukuyama, Hidetoshi | We theoretically investigate the electrodynamics of narrow-gap electron systems in the presence of strong spin-orbit interaction treated as three-dimensional Dirac materials. | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 574 | Magnetotransport in multi-Weyl semimetals: A kinetic theory approach | Dantas, Renato; Pena-Benitez, Francisco; Surowka, Piotr; Roy, Bitan | We will show that for any n>1, even though the distribution of the underlying Berry curvature is anisotropic, the corresponding intrinsic component of the longitudinal magnetoconductivity (LMC), bearing the signature of the chiral anomaly, is insensitive to the direction of the external magnetic field (B) and increases as $B^2$, at least when it is sufficiently weak (the semi-classical regime). | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 575 | Geometric signatures of topological origin in the particle-hole continuum of Weyl semimetals | CHANDRASEKARAN, ANIRUDH; Kourtis, Stefanos | We present a full geometric description of the particle-hole continuum in Weyl semimetals, emphasizing distinctive features in the joint density of states for particle-hole excitations across nodal points. | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 576 | Non-abelian braiding of Weyl points | Bouhon, Adrien; Slager, Robert-Jan; Bzdusek, Tomas | We discuss the realization of non-abelian braiding of Weyl points in a two-dimensional crystal. | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 577 | The disordered single Weyl cone | Pixley, Jed; Wilson, Justin; Huse, David; Das Sarma, Sankar | We numerically study a single Weyl cone in the presence of short-range disorder. | Session 46: Fermi Surface and Excitations of Weyl Systems |
| 578 | Central Charge of Periodically Driven Critical Kitaev Chains | Yates, Daniel; Lemonik, Yonah; Mitra, Aditi | We explore whether the critical point separating different phases of the periodically driven chain may be characterized by a universal central charge. | Session 47: Floquet Systems |
| 579 | Signatures of Floquet Majorana Fermions in Planar Josephson Junctions | Liu, Dillon; Shabani, Javad; Mitra, Aditi | We show how Floquet Majorana fermions may be experimentally realized in a periodically driven solid state platform. | Session 47: Floquet Systems |
| 580 | Time-Crystalline Topological Superconductors | Chew, Aaron; Mross, David; Alicea, Jason | We introduce the notion of 1D time-crystalline topological superconductors, for which time-translation symmetry breaking and Majorana physics nontrivially intertwine. | Session 47: Floquet Systems |
| 581 | Three-dimensional Chiral Lattice Fermion in Floquet Systems | Sun, Xiao-Qi; Xiao, Meng; Bzdusek, Tomas; Zhang, Shoucheng; Fan, Shanhui | Based on these findings, we propose a realization of purely left- or right-handed Weyl particles on a 3D lattice using a Hamiltonian obtained through dimensional reduction of a four-dimensional quantum Hall system. | Session 47: Floquet Systems |
| 582 | Disentangling beyond-cohomology symmetry protected topological phases | Haah, Jeongwan; Fidkowski, Lukasz; Hastings, Matthew | We construct a three-dimensional locality preserving unitary operator which disentangles the ground state of the Walker-Wang three fermion model. | Session 47: Floquet Systems |
| 583 | Transport signatures of symmetry protection in one-dimensional topological insulators | Balabanov, Oleksandr; Johannesson, Henrik | Here we describe a scheme for probing the robustness of the edge states by calculating the transport characteristics of an array of dimers attached to external leads. | Session 47: Floquet Systems |
| 584 | Topologically protected braiding in a single wire using Floquet Majorana modes | Karzig, Torsten; Bauer, Bela; Pereg-Barnea, Tami; Rieder, Maria-Theresa; Refael, Gil; Berg, Erez; Oreg, Yuval | We describe and numerically evaluate a protocol that realizes non-local braiding of two Majorana zero modes in a single wire by adiabatically modulating the Floquet drive and using the Pi modes as auxiliary degrees of freedom. | Session 47: Floquet Systems |
| 585 | Metal to insulator phase transitions in Floquet-Bloch systems | Esin, Iliya; Rudner, Mark; Lindner, Netanel | In this work, we study steady-states of low-dimensional semiconductors subjected to strong resonant periodic drives. | Session 47: Floquet Systems |
| 586 | Dissipative non-adiabatic topological pumping in an open Floquet system | Nag, Tanay; Saha, Kush; Seradjeh, Babak; Oka, Takashi | Motivated by recent experimental realizations of topological charge pumping in cold atoms, we theoretically study the Rice-Mele model with spatiotemporal disorder coupled to two leads using the Floquet Keldysh green�s function approach. | Session 47: Floquet Systems |
| 587 | Higher-Order Floquet Topological Phases and Defects | Rodriguerz-Vega, Martin; Kumar, Abhishek; Seradjeh, Babak | As a prototypical model, we study, both analytically and numerically, the two-dimensional ?-flux square lattice with time-dependent nearest-neighbor hopping modulation. | Session 47: Floquet Systems |
| 588 | Optical response of Floquet topological insulators | Kumar, Abhishek; Rodriguerz-Vega, Martin; Pereg-Barnea, Tami; Seradjeh, Babak | Motivated to find useful signatures of Floquet topological phases, we formulate a linear response theory for a Floquet system subjected to an external field and derive the generalized optical conductivity. | Session 47: Floquet Systems |
| 589 | Solutions to the Chiral Fermion Problem from Topological Orders and Floquet Non-Hermition Field Integrals | DeMarco, Michael; Wen, Xiao-Gang | We keep the `width’ of the slab finite so that the system is truly 1+1d. We can then develop a recipe for defining chiral gauge theories that can be extended to higher dimensions. | Session 47: Floquet Systems |
| 590 | Floquet Topological Semimetal with Nodal Helix | Park, Kwon; Kim, Kun; Kwon, HyunWoong | Here, we show that a Floquet topological semimetal with nodal helix can be generated by irradiating graphene or the surface of a topological insulator with circularly polarized light. | Session 47: Floquet Systems |
| 591 | Fractional Quantum Hall Effect at ?=2+6/13: The Parton Paradigm for the Second Landau Level | Coimbatore Balram, Ajit; Mukherjee, Sutirtha; Park, Kwon; Barkeshli, Maissam; Rudner, Mark; Jain, Jainendra | Here we propose a “bar3bar2111” parton wave function and demonstrate it to be a good candidate state for this phase. | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 592 | On the Interpretation of Thermal Conductance of the nu=5/2 Edge | Simon, Steven | The purpose of this paper is to propose a possible solution to this conflict: if the Majorana edge mode of the Anti-Pfaffian does not thermally equilibrate with the other edge modes, then $K=5/2$ is expected. | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 593 | Dirac Composite Fermions and Emergent Reflection Symmetry about Even Denominator Filling Fractions | Goldman, Hart; Fradkin, Eduardo | Motivated by the appearance of a �reflection symmetry� in transport experiments and the absence of statistical periodicity in relativistic quantum field theories, we propose a series of relativistic composite fermion theories for the compressible states appearing at filling fractions ? = 1/2n in quantum Hall systems. | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 594 | Partial Equilibration of Integer and Fractional Edge Channels in the Thermal Quantum Hall Effect | Ma, Kwok Wai; Feldman, Dmitri | Partial Equilibration of Integer and Fractional Edge Channels in the Thermal Quantum Hall Effect | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 595 | Finite-thickness effect of the fractional quantum Hall states in the second Landau level | Wang, Pengjie; Sun, Jian; Wu, Yijia; Chen, Hua; Pfeiffer, Loren; West, Kenneth; Xie, Xincheng; Lin, Xi | We will present our energy gap measurements of the FQH states (7/3, 5/2, 8/3 and 7/2) in the SLL under tilted magnetic fields. | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 596 | Strain-induced resistance anisotropy near the FQHE v=5/2 in two-dimensional GaAs single quantum wells | Stern, Alexander; Casas, Brian; Pollanen, Johannes; Eisenstein, James; West, Kenneth; Pfeiffer, Loren; Xia, Jing | We report strain-dependent low temperature magnetotransport measurements of a two-dimensional electrons gas confined in GaAs single quantum wells. | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 597 | Principal component analysis of quantum Hall wave functions | Jiang, Na; Ke, Siyao; Wan, Xin | We present a study of the evolution of quantum Hall wave functions with interaction anisotropy by a statistical learning technique known as the principal component analysis (PCA). | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 598 | Hamiltonian theory for Quantum Hall systems in a tilted magnetic field: composite fermion geometry and robustness of activation gaps | Yang, Kang; Goerbig, Mark Oliver; Dou�ot, Beno�t | We implement this geometry into Shankar and Murthy’s Hamiltonian theory, which provides an analytical framework for Jain’s composite fermion (CF) picture according to which the fractional quantum Hall effect arises from an integer number of fully filled CF Landau levels. | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 599 | A Josephson relation for fractionally charged anyons. | Kapfer, Maelle; Roulleau, Preden; Farrer, Ian; Ritchie, David; Glattli, Christian | Here we report on a dynamical property of anyons: the long predicted Josephson relation f J=e*V/h for charge e*=e/3 and e/5. | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 600 | Non-Magnetic Fractionally Quantized Conductance in Quasi-One Dimensional Semiconductor Structures | Pepper, Michael; Kumar, Sanjeev; Gul, Yilmaz; Myronov, Maksym; Ritchie, David; Farrer, Ian; Montagu, Henry | We have investigated quasi-one dimensional carrier transport using holes, (electrons), in Ge-SiGe, (GaAs-AlGaAs), heterostructures in the ballistic regime. | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 601 | Melting of interference in the fractional quantum Hall regime: Appearance of neutral modes | Banerjee, Mitali; Bhattacharyya, R; Heiblum, Moty; Mahalu, Diana; Umansky, Vladimir | Here, we have systematically studied the Aharonov-Bohm interference in a Mach-Zehnder interferometer (MZI) and correlated it with the appearance of upstream neutral modes. | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 602 | Landau level subbands as a platform for many-body localization | Krishna, Akshay; Ippoliti, Matteo; Bhatt, Ravindra | In particular, we use two specific models � a suitably engineered flat band potential, and randomly placed point-like impurities, to create subbands into which we project the problem, including both ineractions and disorder. | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 603 | Bulk properties of the 5/2 fractional quantum Hall state with Corbino geometry | Sun, Jian; Wang, Pengjie; Zhu, Zheyi; Niu, Jiasen; Pfeiffer, Loren; West, Kenneth; Lin, Xi | We will show our observation of bulk insulation in the 5/2 FQH state with Corbino geometry at an estimated low electron temperature of 12 mK. | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 604 | Half-filled Landau levels: a continuum and sign-free regularization of 3D quantum critical points | Ippoliti, Matteo; Mong, Roger; Assaad, Fakher; Zaletel, Michael | We propose a method to regulate (2+1)-dimensional quantum critical points in which the ultraviolet cutoff is implemented by Landau level quantization, rather than by a lattice [1]. | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 605 | Superconducting correlations in a fractional quantum Hall bilayer interface | Vayrynen, Jukka; Goldstein, Moshe; Gefen, Yuval | We consider a fractional quantum Hall bilayer system with an interface between quantum Hall states of filling fractions (0,1) and (1,1/3), motivated by recently fabricated systems by the Heiblum group (Weizmann). | Session 48: Fractional Quantum Hall Effect: Composite Fermions |
| 606 | Single photon Chern insulator in superconducting microwave lattices | Owens, Clai; Saxberg, Brendan; Ma, Ruichao; Simon, Jonathan; Schuster, David | We present the latest progress in developing a novel architecture for exploration of topological quantum matter. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 607 | Cu[Li1/3Sn2/3]O2 and Cu[Na1/3Sn2/3]O2: Crystal Structure and Phonon Dispersion in Quaternary Honeycomb Delafossites | Bahrami, Faranak; Abramchuk, Mykola; Lebedev, Oleg; Hellman, Olle; Mordvinova, Natalia; Krizan, Jason; Metz, Kenneth; Broido, David; Fallah Tafti, Fazel | The study of non-magnetic honeycomb delafossites provides a basis to model the physical properties of magnetic honeycomb materials. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 608 | Observation of Chiral Surface Excitons in a Topological Insulator Bi2Se3 | Kung, Hsiang-Hsi; Goyal, Adamya; Maslov, Dmitrii; Wang, Xueyuen; Lee, Alexander; Kemper, Alexander; Cheong, Sang-Wook; Blumberg, Girsh | Based on the dependences of the PL spectra on the energy and polarization of incident photons, we propose that the observed PL can be semi-quantitatively explained by composite particles � chiral excitons � formed by the Coulomb attraction between massless (Dirac) electrons and massive holes, both subject to strong spin-orbit coupling which locks their spins and momenta into chiral textures. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 609 | Spin wave transport through electron solids and fractional quantum Hall liquids in graphene | Zhou, Haoxin; Polshyn, Hryhoriy; Taniguchi, Takashi; Watanabe, Kenji; Young, Andrea | Here, we apply this technique to high quality graphite-gated graphene devices showing robust fractional quantum Hall phases and isospin phase transitions. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 610 | Bounding the excitation gap of the Laughlin and other model incompressible fractional quantum Hall (FQH) states. | Haldane, Frederick D | I will discuss these fundamental questions, and review strategies and progress towards answering them. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 611 | Formation of helical domain walls in the fractional quantum Hall regime as a step toward realization of high-order non-Abelian excitations | Wu, Tailung; Wan, Zhong; Kazakov, Aleksandr; Wang, Ying; Rokhinson, Leonid | In this work we present formation of conducting channels at boundaries between incompressible polarized and unpolarized$\nu =2/3$states in FQHE regime.We demonstrate that in a triangular quantum well polarizations of a 2DEG can be locally controlled by electrostatic gating at a filling factor$\nu=2/3$. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 612 | Particle-Hole Symmetric Pfaffian | Pakrouski, Kiryl; Haldane, Frederick D; Rezayi, Edward; Wang, Jie; Yang, Kun | Particle-Hole Symmetric Pfaffian | Session 49: Fractional Quantum Hall Effect: New Systems |
| 613 | Parent-Hamiltonians for any Jain composite fermion state | Bandyopadhyay, Sumanta; Ortiz, Gerardo; Nussinov, Zohar; Seidel, Alexander | Here we resolve this issue by departing from the usual construction scheme of quantum Hall parent Hamiltonians, which emphasizes analytic clustering properties. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 614 | Study of the inelastic length under microwave photo-excitation in the GaAs/AlGaAs 2D electron system | Samaraweera, Rasanga; Gunawardana, Binuka; Nanayakkara, Tharanga; Munasinghe, C. Rasadi; Wijewardena, U. Kushan; Withanage, Sajith; Kriisa, Annika; Reichl, Christian; Wegscheider, Werner; Mani, Ramesh | In this experimental work, the results exhibit that the incident microwave (MW) significantly modifies the observed narrow negative-MR feature, such that the WL-like peaks disappear at high power regime. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 615 | Interacting topological phases in Fibonacci quasicrystals | Ghaemi Mohammadi, Pouyan; Fink, Moshe; Ghazaryan, Areg | In this work, we have studied the interacting topological phases in Fibonacci quasicrystals and examined the possible experimental signatures for the effect of interactions in exciton-polariton systems formed in quasicrystal structures. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 616 | Evolution of the line shape of radiation-induced magnetoresistance oscillations under bi-chromatic microwave excitation | Gunawardana, Binuka; Munasinghe, C.Rasadi; Samaraweera, Rasanga; Nanayakkara, Tharanga; Kriisa, Annika; Wijewardena, U. Kushan; Withanage, Sajith; Reichl, Christian; Wegscheider, Werner; Mani, Ramesh | Here we present the results to address the question of whether or not superposition is followed in the bichromatic microwave magnetoresistance response. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 617 | Interferometer parameters that allow observation of non-Abelian e/4 properties. | Willett, Robert; Shtengel, Kirill; Manfra, Michael; Pfeiffer, Loren; Fallahi, Saeed; Gardner, Geoffrey; West, Kenneth; Baldwin, Kirk | In this talk summary results will be presented, but the focus will be these device parameters and procedures employed to reveal the non-Abelian properties. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 618 | A Particle-Hole-Symmetric Model for Paired Fractional Quantum Hall States In a Half-filled Landau Level | Peterson, Michael; Hutzel, William; McCord, John; Raum, Peter; Stern, Ben; wang, hao; Scarola, Vito | We use exact diagonalization to study the low energy states of a more physical two-body generator model derived from the three-body model. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 619 | Spin-resolved tunneling in the fractional quantum Hall effect regime | Yoo, Heun Mo; Pfeiffer, Loren; Baldwin, Kirk; West, Kenneth; Ashoori, Raymond | Here we introduce a new method, spin-resolved tunneling, that can probe the spin texture of both the ground and excited states of QH systems. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 620 | Symmetry protected Luttinger liquids in Quantum Hall Ferromagnets on the surface of Bi(111). | Agarwal, Kartiek; Randeria, Mallika; Sondhi, Shivaji; Yazdani, Ali; Parameswaran, Siddharth | We explain[3] these observations both qualitatively and quantitatively by highlighting the role of interactions and symmetries in engendering such exotic Luttinger liquids. | Session 49: Fractional Quantum Hall Effect: New Systems |
| 621 | Incompressible Even Denominator Fractional Quantum Hall States in the Zeroth Landau Level of Monolayer Graphene | NARAYANAN, SUJIT; Roy, Bitan; Kennett, Malcolm | We use a Chern-Simons description of multicomponent fractional quantum Hall states in graphene to study these incompressible fractional quantum hall states in the zeroth Landau level and suggest variational wavefunctions that may describe them. | Session 50: Fractional Quantum Hall Effect: Novel States |
| 622 | Pfaffian paired states at filling factor 5/2 | Milovanovic, Milica; Vucicevic, Jaksa; Antonic, Luka | Within the Dirac composite fermion theory of fractional quantum Hall effect (FQHE), we investigate which Pfaffian paired state will dominate at a fixed value of a particle-hole (PH) symmetry breaking parameter – the mass of Dirac composite fermions. | Session 50: Fractional Quantum Hall Effect: Novel States |
| 623 | A Study of Reentrant Integer Quantum Hall States in High Landau Levels | RO, DOHYUNG; Deng, Nianpei; Manfra, Michael; Pfeiffer, Loren; West, Kenneth; Csathy, Gabor | Here we report the observation of eight reentrant integer quantum Hall states developing in the fourth Landau level. | Session 50: Fractional Quantum Hall Effect: Novel States |
| 624 | Geometry of flux attachment in anisotropic fractional quantum Hall states | Bhatt, Ravindra; Ippoliti, Matteo; Haldane, Frederick D | We use an infinite-cylinder density matrix renormalization group method [2] to numerically simulate these states and access their internal metric through the long-wavelength limit of their static guiding center structure factor. | Session 50: Fractional Quantum Hall Effect: Novel States |
| 625 | Working principles of the short-period superlattice structure in GaAs quantum wells | Chung, Edwin; Baldwin, K. W.; West, Kenneth; Shayegan, Mansour; Pfeiffer, Loren | We present the design rules of GaAs quantum wells that utilize the short-period superlattice (SPSL) structure to achieve a two dimensional electron system (2DES). | Session 50: Fractional Quantum Hall Effect: Novel States |
| 626 | A recursion approach to thin cylinder approximants for fractional quantum Hall states | Schossler, Matheus; Bandyopadhyay, Sumanta; Seidel, Alexander | Here we observe that these recursions commute with the expansion of cylinder fractional quantum hall states in a �thin-cylinder parameter��. | Session 50: Fractional Quantum Hall Effect: Novel States |
| 627 | Evidence for an even-denominator fractional quantum Hall state in the ground Landau level of an anisotropic system | Hossain, Md. Shafayat; Ma, Meng; Chung, Edwin; Pfeiffer, Loren; West, Kenneth; Baldwin, K. W.; Shayegan, Mansour | We report here the observation of an even-denominator FQHS at filling factor ? = 1/2 in a 2D electron system confined to a wide AlAs quantum well where the electrons can occupy multiple conduction-band valleys with an anisotropic effective mass. | Session 50: Fractional Quantum Hall Effect: Novel States |
| 628 | Hall viscosity of manifestly modular invariant composite fermion wave functions | Pu, Songyang; Jain, Jainendra | We perform a numerical calculation of the Hall viscosity of general fractional quantum Hall states by deforming the modular parameter $\tau$ on a torus. | Session 50: Fractional Quantum Hall Effect: Novel States |
| 629 | Kohn-Sham Theory of the Fractional Quantum Hall Effect | Hu, Yayun; Jain, Jainendra | We instead map the FQHE system into a system of non-interacting composite fermions, which experience an effective magnetic field that depends on density. | Session 50: Fractional Quantum Hall Effect: Novel States |
| 630 | Fixed phase diffusion Monte Carlo study of finite width effect in FQHE | Zhao, Tongzhou; Jain, Jainendra | We instead determine the transverse density profile directly at a high magnetic field through the fixed phase diffusion Monte Carlo method, where the phase is fixed by the in-plane FQHE state. | Session 50: Fractional Quantum Hall Effect: Novel States |
| 631 | Composite fermions with quenched disorder at the half-filled Landau level | Kumar, Prashant; Huang, Kevin; Mulligan, Michael; Raghu, Srinivas | Composite fermions with quenched disorder at the half-filled Landau level | Session 50: Fractional Quantum Hall Effect: Novel States |
| 632 | Observation of new plasmons in the fractional quantum Hall effect: interplay of topological and nematic orders(*) | Du, Lingjie; Wurstbauer, Ursula; Fallahi, Saeed; Gardner, Geoffrey; Manfra, Michael; Pfeiffer, Loren; West, Kenneth; Pinczuk, Aron | We observe unexpected collective modes in the fractional quantum Hall (FQH) regime of the second Landau level (LL): intra-Landau-level plasmons measured by resonant inelastic light scattering. | Session 50: Fractional Quantum Hall Effect: Novel States |
| 633 | Half-filled Landau level in a honeycomb lattice: Chern insulator of composite fermions | Maiti, Saurabh; Sedrakyan, Tigran | In this work we demonstrate the construction of a lattice version of the long-wavelength field theories. The study of electronic correlations in half-filled Landau level presents a challenge due to the massive degeneracy in the single-particle spectrum. | Session 50: Fractional Quantum Hall Effect: Novel States |
| 634 | Probing the Melting of Two-dimensional Quantum Wigner Crystal via its Screening Efficiency | Deng, Hao; Ma, Meng; Pfeiffer, Loren; West, Kenneth; Baldwin, K. W.; Shayegan, Mansour | Here we use capacitance measurements to probe the 2D WC thorough its effective screening as a function of T and ?. | Session 50: Fractional Quantum Hall Effect: Novel States |
| 635 | Aharonov-Bohm interference of integer and fractional quantum Hall edge modes in small electronic Fabry-Perot interferometers | Nakamura, James; Fallahi, Saeed; Liang, Shuang; Gardner, Geoffrey; Manfra, Michael | We present measurements of the selective interference of inner and outer edge states in the integer quantum Hall regime. | Session 50: Fractional Quantum Hall Effect: Novel States |
| 636 | Zero modes, Bosonization and Topological Quantum Order: Composite Fermions in Second Quantization | Chen, Li; Bandyopadhyay, Sumanta; Yang, Kun; Seidel, Alexander | We develop recursion relations, in particle number, for all (unprojected) Jain composite fermion (CF) wavefunctions. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 637 | Variational principle for an incompressible fluid with Hall viscosity and gapless surface modes | Monteiro, Gustavo; Abanov, Alexandre | Motivated by this example, we focus in this work on the variational and Hamiltonian formulations of incompressible two-dimensional fluid dynamics with free surface and nonvanishing Hall viscosity. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 638 | Geometric quench in the fractional quantum Hall effect: exact solution in quantum Hall matrix models and comparison with bimetric theory | Lapa, Matthew; Gromov, Andrey; Hughes, Taylor | We investigate the recently introduced geometric quench protocol for fractional quantum Hall (FQH) states within the framework of exactly solvable quantum Hall matrix models. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 639 | Interlayer fractional quantum Hall effect in a coupled graphene double-layer | Liu, Xiaomeng; Hao, Zeyu; Watanabe, Kenji; Taniguchi, Takashi; Halperin, Bertrand; Kim, Philip | Here we report interlayer correlated FQH states in a system of two parallel graphene layers separated by a thin insulator. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 640 | Microwave photo-excited transport in the GaAs/AlGaAs 2DES | Kriisa, Annika; Reichl, Christian; Wegscheider, Werner; Mani, Ramesh | In this study, we re-examine through experiment the role of the magnetoplasmon in the GaAs/AlGaAs magnetotransport and report the results. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 641 | Pairing and Pair Tunneling of Electrons at the Edge of a GaAs Quantum Dot Two-Dimensional Electronic System | Demir, Ahmet; Staley, Neal; Baldwin, K. W.; West, Kenneth; Pfeiffer, Loren; Ashoori, Raymond | Here, we report the observation in the addition spectra of individually localized states, incompressible Landau gaps, and isolated tunneling to edge states. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 642 | Study of spin splitting of Shubnikov de Hass oscillations under microwave photoexcitation in the GaAs/AlGaAs 2DES | Nanayakkara, Tharanga; Samaraweera, Rasanga; Gunawardana, Binuka; Munasinghe, C. Rasadi; Wijewardena, U. Kushan; Withanage, Sajith; Kriisa, Annika; Mani, Ramesh; Reichl, Christian; Wegscheider, Werner | The aim of the study is to determine the magnitude of the electron heating under microwave photo-excitation by examining observable spin splitting- and variation thereof under photoexcitation- at high filling factors. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 643 | Collective excitations in the Moore-Read phase: view from superspace | Gromov, Andrey; Ryu, Shinsei; Martinec, Emil | We present a microscopic theory of the neutral collective modes supported by the Moore-Read fractional quantum Hall state. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 644 | One-plaquette Chern number: Many-body Chern number without integration | Kudo, Koji; Watanabe, Haruki; Kariyado, Toshikaze; Hatsugai, Yasuhiro | In this talk, we provide numerical evidence that the integration by twisted angles in the Niu-Thouless-Wu formula is unnecessary if the system size and the excitation gap are sufficiently large. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 645 | Search for exact local Hamiltonians for general fractional quantum Hall states | Ganesh Jaya, Sreejith; Fremling, Mikael; Jeon, Gun Sang; Jain, Jainendra | We report on our systematic attempts at finding local interactions for which the lowest-Landau-level projected composite-fermion wave functions are the unique zero energy ground states. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 646 | Prediction of a new non-Abelian state at ? = 1/4 in Wide Quantum Wells* | Faugno, William; Coimbatore Balram, Ajit; Barkeshli, Maissam; Jain, Jainendra | We consider several single-component candidate states, and conclude that the non-Abelian �22111-parton� state is the most likely candidate. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 647 | Stripe Pairing Order in the 5/2-filling Fractional Quantum Hall State | Santos, Luiz; Wang, Yuxuan; Fradkin, Eduardo | We show that the domain walls (DWs) of the PDW order parameter support a pair of counter-propagating Majorana modes whose properties depend on the competition between the Fermi energy and the strength of the PDW order parameter. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 648 | Composite fermions mass in an anisotropic two-dimensional electron system | Villegas Rosales, Kevin; Chung, Edwin; Deng, Hao; West, Kenneth; Baldwin, K. W.; Pfeiffer, Loren; Shayegan, Mansour | We report on the energy gaps and Shubnikov-de Haas mass (m CF) of composite fermions in samples with density n = 1.04 x 10 11 cm -2 and quantum well widths of 35 and 50 nm. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 649 | Parton states as unique ground states of frustration free quantum Hall Hamiltonians with Fibonacci anyon excitations | Tanhayi Ahari, Mostafa; Bandyopadhyay, Sumanta; Nussinov, Zohar; Seidel, Alexander; Ortiz, Gerardo | We develop a general formalism to systematically derive frustration-free fractional quantum Hall (FQH) Hamiltonians in the presence of Landau level (LL) mixing. | Session 51: Fractional Quantum Hall Effect: Novel States and Excitations |
| 650 | Magnetic quadrupole moment in higher order topological semimetals | Gliozzi, Jacopo; Lin, Mao; Hughes, Taylor | In this presentation, we instead consider the magnetic quadrupole moment (MQM) in the three dimensional higher order topological semimetals (HOTS). | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 651 | ‘t Hooft anomalies in symmetry-enriched U(1) gauge theories | Ning, Shangqiang; Zou, Liujun; Cheng, Meng | We obtain the classification of the patterns of symmetry fractionalization in symmetry-enriched U(1) gauge theories, and, in particular, an explicit formula to determine the relevant ‘t Hooft anomalies in terms of the fractionalization patterns. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 652 | Type-II Fracton Models with Gapped Boundaries | Bulmash, Daniel; Dua, Arpit; Iadecola, Thomas; Williamson, Dominic | We discuss the interpretation of the degeneracy in terms of surface line defects, i.e. the domain walls between distinct gapped boundaries. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 653 | Variational Monte Carlo study on a magnetization process of the Kitaev honeycomb model under a magnetic field | Ido, Kota; Misawa, Takahiro | In this talk, we will report the magnetization process of the AF KM obtained by using the variational Monte Carlo (VMC) method. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 654 | Model of spin liquids with and without time-reversal symmetry | Chen, Jyong-Hao; Mudry, Christopher; Chamon, Claudio; Tsvelik, Alexei | We study a model in (2+1)-dimensional spacetime that is realized by an array of chains, each of which realizes relativistic Majorana fields in (1+1)-dimensional spacetime, coupled via current-current interactions. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 655 | Monolayer Mg2C: Negative Poisson’s ratio and unconventional two-dimensional emergent fermions | Wang, Shan-Shan; Yang, Shengyuan | We analyze its phonon spectrum, reveal the Raman-active modes, and show that it has small in-plane stiffness constants. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 656 | Unconventional Pairing Induced Anomalous Transverse Shift in Andreev Reflection | Yu, Zhi-Ming; Liu, Ying; Yao, Yugui; Yang, Shengyuan | Here we predict that in Andreev reflection from unconventional superconductors, the reflected hole acquires an anomalous spatial shift normal to the plane of incidence, arising from the unconventional pairing. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 657 | Goos-H�nchen-like shifts at a metal/superconductor interface | Liu, Ying; Yu, Zhi-Ming; Jiang, Hua; Yang, Shengyuan | For the simplest model in which the N side is of the two-dimensional electron gas, we find that while the shift in Andreev reflection stays positive, the shift in normal reflection can be made either positive or negative, depending on the excitation energy. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 658 | Dynamical Localization and Delocalization in Floquet Systems | Cadez, Tilen; Mondaini, Rubem; Sacramento, Pedro | We study the localization aspects of a kicked noninteracting one-dimensional quantum system of spinless fermions and a topological superconductor subject to either time-periodic or aperiodic pulses. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 659 | Prethermalization and topological transport in slowly driven Floquet systems | Lindner, Netanel; Gulden, Tobias; Berg, Erez; Rudner, Mark | We investigate a mechanism to transiently stabilize topological phenomena over a long-time window for systems driven at low frequencies. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 660 | Bulk-edge correspondence of periodically driven 2D systems with time-reversal symmetry | Liu, Xu; Harper, Fenner; Roy, Rahul | We propose an edge invariant for two-dimensional Floquet systems with time-reversal symmetry. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 661 | FLOQUET ENGINEERING OF EXCHANGE INTERACTIONS IN 2D MAGNETIC MATERIALS | Chaudhary, Swati; Refael, Gil; Hsieh, David | We take into account the presence of these ligand ions, and investigate the effects of the periodic drive on magnetic coupling strengths between different neighboring spins in transition metal trichalcogenides for a variety of exchange pathways available in these materials. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 662 | Light driven magnetic and topological phase transitions in magnetic topological insulator thin films | Liu, Xiaoyu; Tang, Peizhe; Huebener, Hannes; Wenhui, Duan; Rubio, Angel | Herein, we predict that topological and magnetic properties in magnetically doped topological insulator thin films can be well tuned by the laser field. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 663 | Stability of Periodically Driven Topological Phases against Disorder | Movassagh, Ramis; Shtanko, Oles | We propose a universal effective theory that leverages on modern free probability theory and ideas in random matrices to analytically predict the existence of the topological phase for finite driving frequencies and across a range of disorder. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 664 | Surface Acoustic Wave Study in Microwave-Induced Non-Equilibrium Electron System | Wang, Jianli; Zhang, Chi; Pfeiffer, Loren; West, Kenneth; Baldwin, K. W. | We employed the surface acoustic wave (SAW) to study the structure of MIRO and ZRS. | Session 52: Frontiers of Topological Materials: Mostly Theory |
| 665 | Intermediate gapless phase and topological phase transition of the Kitaev model in a uniform magnetic field | Liang, Shuang; Jiang, Ming-Hong; Chen, Wei; Li, Jian-Xin; Wang, Qiang-Hua | We study the Kitaev model in a [001] magnetic field employing the mean-field theory(MFT) in the Majorana fermion representation. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 666 | Majorana representations of spin and an alternative solution of the Kitaev honeycomb model | Fu, Jianlong; Knolle, Johannes; Perkins, Natalia | As an example of its application, we present an alternative solution of the Kitaev honeycomb model. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 667 | Algebraic Quantum Spin Liquid from an Exactly Solvable Spin-1/2 Kitaev Model | Miao, Jian-Jian; Jin, Hui-Ke; Zhang, Fu-Chun; Zhou, Yi | We propose an exactly solvable quantum spin-1/2 model with time reversal invariance on a two dimensional brick-wall lattice, where each unit cell consists of three sites. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 668 | Topological superconductivity in the Kondo-Kitaev model | Choi, Wonjune; Klein, Philipp; Rosch, Achim; Kim, Yong-Baek | We investigate possible topological superconductivity in the Kondo-Kitaev model on the honeycomb lattice, where the Kitaev spin liquid is coupled to conduction electrons via the Kondo coupling. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 669 | Emergent interacting two-fluids in a disordered Hubbard model | Lee, Kyungmin; Patel, Aavishkar; Trivedi, Nandini; Sachdev, Subir | Motivated especially by a two-fluid model, with localized SYK islands and itinerant fermions, that captures the physics of the “strange�� metal state of high temperature superconductors, here we discuss the possibility of such a separation of fermionic degrees of freedom starting from a disordered Hubbard model. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 670 | Many-body localization in a modified SYK model | Wang, Hanteng; Kamenev, Alex | We investigate the many-body spectrum and eigenfunctions of Sachdev-Ye-Kitaev model with additional random hopping terms. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 671 | Strong impact of all-in all-out magnetic order on magnetic and lattice dynamics in pyrochlore iridates studied by Raman spectroscopy | Ueda, Kentaro; Kaneko, Ryoma; Subedi, Alaska; Minola, Matteo; Kim, Bumjoon; Fujioka, Jun; Tokura, Yoshinori; Keimer, Bernhard | We perform Raman spectroscopy on pyrochlore Eu2Ir2O7 which undergoes a paramagnetic-to-antiferromagnetic transition, as well as paramagnetic counterpart Pr2Ir2O7. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 672 | Linear magnetoresistance in the all-in-all-out antiferromagnet Cd2Os2O7 | Wang, Yishu; Feng, Yejun; Gomez, Felipe; Silevitch, Daniel; Yan, Jiaqiang; Mandrus, David; Lee, Patrick; Rosenbaum, Thomas | Here, we explore the magnetoresistance associated with this magnetic order, which manifests an odd-parity linear functional form. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 673 | Visualizing Kondo lattice behavior in the frustrated pyrochlore iridate Pr2Ir2O7 using scanning tunneling spectroscopy and machine learning | Kavai, Mariam; Sherman, Kyle; Leshen, Justin; Friedman, Joel; Giannakis, Ioannis; Nakatsuji, Satoru; Lawler, Michael; Aynajian, Pegor | Using machine learning of large data, we discover these rather seemingly random spectra to form nanoscale patterns, which may be related to electronic entanglement. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 674 | Using quantum typicality to compute the thermodynamics of the frustrated spin compound SrCu2(BO3)2 | Wietek, Alexander; Honecker, Andreas; Corboz, Philippe; Wessel, Stefan; Mila, Frederic; Normand, Bruce | We demonstrate, how to use the Lanczos method in conjunction with quantum typicality to extract thermodynamic quantities at arbitrary temperatures without a full diagonalization of the Hamiltonian. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 675 | Partial order in the extended Hubbard model on a triangular lattice | Enjalran, Matthew | Hence, focusing on charge and magnetic degrees of freedom of fermions, we present results from Hartree-Fock calculations of the extended Hubbard model on the triangular lattice. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 676 | Supersymmetry in an interacting Majorana model on the kagome lattice | Li, Chengshu; Lantagne-Hurtubise, �tienne; Franz, Marcel | We construct a supersymmetric model of interacting Majorana modes on the kagome lattice. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 677 | Majorana-Hubbard model on the triangular lattice | Tummuru, Tarun; Nocera, Alberto; Affleck, Ian | Given that in experiments the vortex lattice usually has a triangular geometry, we construct a model for interacting MZMs in this setup. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 678 | Possible gapless spin liquid in a rare-earth kagome lattice magnets Tm3Sb3Zn2O14 | Ding, Zhaofeng; Yang, Yanxing; Zhang, Jian; Tan, Cheng; Zhu, Zihao; Chen, Gang; Shu, Lei | We report the thermodynamic and muon spin relaxation (?SR) evidences for a possible gapless spin liquid in Tm 3Sb 3Zn 2O 14, with the rare-earth ions Tm 3+ forming a two-dimensional kagome lattice. | Session 53: Frustrated Lattices: Kitaev, Pyrochlore, and Others |
| 679 | Quantum Spin Liquid with Broken Unidirectional Symmetry in a Square Lattice Spin-1 Model | Hu, Wenjun; Gong, Shoushu; Lai, Hsin-Hua; Hu, Haoyu; Si, Qimiao; Nevidomskyy, Andriy | Here we consider a spin-1 model on a square lattice, where despite the absence of geometric frustration, competition between the nearest neighbor Heisenberg ( J 1) and biquadratic ( K 1) interactions results in a QSL around the J 1= K 1 point, as evidenced by our density matrix renormalization group (DMRG) studies. | Session 54: Frustrated Square Lattice and Other Low-Dimensional Structures |
| 680 | Characterization of quantum spin liquids and their spinon band structures via functional renormalization | Reuther, Johannes; Hering, Max; Sonnenschein, Jonas; Iqbal, Yasir | We combine the pseudofermion functional renormalization group (PFFRG) method with a self-consistent Fock-like mean-field scheme to calculate low-energy effective theories for emergent spinon excitations in spin-1/2 quantum spin liquids. | Session 54: Frustrated Square Lattice and Other Low-Dimensional Structures |
| 681 | Critical Level Crossings and Gapless Spin Liquid in the Square-Lattice Spin-1/2 J1-J2 Heisenberg Antiferromagnet | Wang, Ling; Sandvik, Anders | We use the density matrix renormalization group method to calculate several energy eigenvalues of the frustrated S=1/2 square-lattice J1-J2 Heisenberg model on 2L � L cylinders with L ? 10. | Session 54: Frustrated Square Lattice and Other Low-Dimensional Structures |
| 682 | Observation of topological phenomena induced by frustration and quantum fluctuations in a programmable lattice of 1,800 qubits | Ozfidan, Isil; King, Andrew; Carrasquilla, Juan; Raymond, Jack; Amin, Mohammad | We use a simple but previously undemonstrated approach to statistical estimation with an annealing-based quantum processor, performing Monte Carlo sampling in a chain of reverse quantum annealing protocols. | Session 54: Frustrated Square Lattice and Other Low-Dimensional Structures |
| 683 | Thermodynamics of a frustrated quantum magnet on a square lattice | Bhartiya, Vivek; Povarov, Kirill; Yan, Zewu; Zheludev, Andrey | We report the magnetic and calorimetric measurements in single crystal samples of the square lattice J 1 – J 2 quantum antiferromagnet BaCdVO(PO 4) 2 [1]. | Session 54: Frustrated Square Lattice and Other Low-Dimensional Structures |
| 684 | Improving the full update and probing frustrated J1-J2 spin-1/2 model on a square lattice | Hasik, Juraj; Becca, Federico | In this work, we propose a simple modification of the full-update algorithm [1] and benchmark it on a frustrated J 1-J 2 spin-1/2 Heisenberg model on a square lattice. | Session 54: Frustrated Square Lattice and Other Low-Dimensional Structures |
| 685 | Accuracy of Restricted Boltzmann Machine wavefunctions for frustrated spin systems | Ferrari, Francesco; Carrasquilla, Juan; Becca, Federico | We investigate the accuracy of Restricted Boltzmann Machine (RBM) networks as many-body Jastrow factors for the study of spin systems. | Session 54: Frustrated Square Lattice and Other Low-Dimensional Structures |
| 686 | Magnetic superstructures inside the ? and � magnetization plateaux in Ba2CoTeO6 revealed by magnetostriction and magnetocaloric effect measurements | Weickert, Dagmar; Corvalan-Moya, Carolina; Salamon, Myron; Dong, Chao; Kindo, Koichi; Kohama, Yoshimitsu; Kurita, Nobuyuki; Tanaka, Hidekazu | We present a combination of magnetostriction and magnetocaloric effect (MCE) measurements in high pulsed and static magnetic fields to map out the phase diagram for H ll and perp. | Session 54: Frustrated Square Lattice and Other Low-Dimensional Structures |
| 687 | Spin structure and dynamics of Pb2VO(PO4)2 | Bettler, Simon; Landolt, Florian; Aksoy, �mer; Yan, Zewu; Ressouche, Eric; Zvyagin, Sergei; Ponomaryov, Alexey; Beauvois, Ketty; Qiu, Yiming; Raymond, Stephane; Gvasaliya, Severian; Zheludev, Andrey | We discuss the implications for closely related materials proposed to realize a frustrated square lattice. | Session 54: Frustrated Square Lattice and Other Low-Dimensional Structures |
| 688 | Magnetisation process in the rare earth tetraborides, NdB4 and HoB4 | Petrenko, Oleg; Brunt, Daniel; Qureshi, Navid; Balakrishnan, Geetha; Mayoh, Daniel; Lees, Martin | We report a study into the field-induced magnetisation of the two frustrated rare earth tetraborides, HoB 4 and NdB 4. | Session 54: Frustrated Square Lattice and Other Low-Dimensional Structures |
| 689 | Evolution of the spin-flop antiferromagnetic transition and the emergence of frustration in saw-tooth lattice Mn2SiS4-xSex (x = 0 – 4) chalcogenides | Nhalil, Hariharan; Baral, Raju; Cosio, Adrian; Khamala, Bethuel; Singamaneni, Srinivasa Rao; Fitta, Magdalena; Zope, Rajendra; Baruah, Tunna; Antonio, Daniel; Gofryk, Krzysztof; Saparov, Bayrammurad; Nair, Harikrishnan | We studied the olivines, Mn 2SiS 4-xSe x (0 < x < 4), using magnetization, specific heat, thermal conductivity and ab initio density functional theory (DFT) calculations and tracked the evolution of spin-flop transition and frustration. | Session 54: Frustrated Square Lattice and Other Low-Dimensional Structures |
| 690 | Quantum disordered state in the Jeff =1/2 triangular lattice antiferromagnet NaYbO2 | Bordelon, Mitchell; Kenney, Eric; Posthuma, Lorenzo; Kavand, Marzieh; Lyu, Yuanqi; Sherwin, Mark; Brown, Craig; Graf, Michael; Balents, Leon; Wilson, Stephen | Quantum disordered state in the Jeff =1/2 triangular lattice antiferromagnet NaYbO2 | Session 54: Frustrated Square Lattice and Other Low-Dimensional Structures |
| 691 | Competing paramagnetic phases and itinerant magnetic frustration in SrCo2As2 | Li, Bing; Ueland, Benjamin; Jayasekara, Wageesha; Abernathy, Douglas; N. S., Sangeetha; Johnston, David; Ding, Qing-Ping; Furukawa, Yuji; Orth, Peter; Kreyssig, Andreas; Goldman, Alan; McQueeney, Robert | Competing paramagnetic phases and itinerant magnetic frustration in SrCo2As2 | Session 54: Frustrated Square Lattice and Other Low-Dimensional Structures |
| 692 | Probing the charge distribution at the electrochemical interface | Grunder, Yvonne; Lucas, Christopher; Joly, Yves | Probing the charge distribution at the electrochemical interface | Session 55: Fundamentals of Solid/Aqueous-Electrolyte interfaces |
| 693 | Monitoring electrochemical and electrocatalytic interface processes on the atomic and nanometer scale by operando surface X-ray scattering | Magnussen, Olaf | Modern synchrotron-based X-ray scattering methods provide unique opportunities for such operando studies. The talk will give an overview of the current state of this field. | Session 55: Fundamentals of Solid/Aqueous-Electrolyte interfaces |
| 694 | Transition-metal-oxide/liquid interfaces | Diebold, Ulrike | In the talk we will address the question whether the atomic structure of selected oxide surfaces survives the exposure to liquid water. | Session 55: Fundamentals of Solid/Aqueous-Electrolyte interfaces |
| 695 | Molecular Self-Assemblies as Templates for Electrochemically Deposited Nanostructures | Buck, Manfred | Molecular Self-Assemblies as Templates for Electrochemically Deposited Nanostructures | Session 55: Fundamentals of Solid/Aqueous-Electrolyte interfaces |
| 696 | Mechanics of Rugby Union Scrums: stability and collective production of force | Cohen, Caroline; Reiss, Corentin; Quere, David; Hosoi, Anette; Clanet, Christophe | By coupling forces measurements with a Particle Image Velocimetry (PIV) analysis of videos taken from above, we show that there is a correlation between force fluctuations and the lack of synchronization of the 8 players pushing together. | Session 56: General Talks |
| 697 | Theory of Direction | Arya, Kaustav B. | So,in this way the author tries to find the procedure of different directions causing the gravitation. | Session 56: General Talks |
| 698 | Sources of Biconformal Gravity | Muhwezi, Walter | We explore Yang-Mill’s sources for biconformal gravity. | Session 56: General Talks |
| 699 | Unification of Gravity and Electromagnetism | El-Lakany, Mohammed | Unification of Gravity and Electromagnetism | Session 56: General Talks |
| 700 | The elementary wave hypothesis: particles follow Schr�dinger waves backwards | Boyd, Jeffrey | The elementary wave hypothesis: particles follow Schr�dinger waves backwards | Session 56: General Talks |
| 701 | Aiming Strategies in Shooting Sports | Maddalena, Tom; Bacot, Vincent; Cohen, Caroline; Clanet, Christophe | We build a simple mechanical model for the control of an aiming movement. | Session 56: General Talks |
| 702 | On the nature of space-time, cosmological inflation, and expansion of the universe. | Beau, Mathieu | We propose to investigate the mechanism of cosmological inflation and expansion through the physical properties of space-time [1]. | Session 56: General Talks |
| 703 | Gravitational Response of Topological Quantum States of Matter | JIANG, GUODONG; Chen, YingKang; Biswas, Rudro | We establish that a novel topological response is found in a wide variety of topological quantum states � we term this the topological gravitational response � and comment on the still-unknown topological physics underlying the quantization of the corresponding response coefficient, the gravitational coupling constant. | Session 56: General Talks |
| 704 | Cyber-physical risks of hacked Internet-connected vehicles | Vivek, Skanda; Yanni, David; Yunker, Peter; Silverberg, Jesse | Inspired by this discovery, we develop and validate an analytic percolation-based model to rapidly assess the effect of hacking. | Session 56: General Talks |
| 705 | Five dimensional rotating regular black holes and shadow | Ahmed, Fazlay | We present a five-dimensional ($5D$) rotating regular black hole metric, with a deviation parameter $k\geq 0$, that interpolates between the $5D$ Kerr black hole ($k=0$) and $5D$ Kerr-Newman ($r \gg k$), and is an exact solution of general relativity coupled to nonlinear electrodynamics. | Session 56: General Talks |
| 706 | Reconciliation of the Rosen and Laue theories of special relativity in a linear dielectric medium | Crenshaw, Michael | We show that the incompatible Laue and Rosen treatments of special relativity in a dielectric are both correct but have different regimes of applicability. | Session 56: General Talks |
| 707 | A Novel Interpretation of the Lorentz Transformations | Nikkhah Shirazi, Armin | Here we present a novel interpretation of the Lorentz Transformations in which length contraction is re-conceptualized as the abatement of a body’s dimensionality, and time dilation as the abatement of its duration of existence within a given coordinate time interval. | Session 56: General Talks |
| 708 | Synchronization of human network | Fridman, Moti; Davidson, Nir | We found that humans tend to find a non-trivial solution for frustration situations and spontaneously change the connectivity of the network in order to reach a stable solution. | Session 56: General Talks |
| 709 | On the origin of kinetic energy in The Physical Universe including the Godforsaken area of turbulence | Berkovich, Simon | Answers to diverse problems in physics can be obtained with a Cellular Automaton (CA) Model (see our recent minireview [1], with pertinent references) CA model combines divergent functionalities that otherwise difficult to imagine. | Session 56: General Talks |
| 710 | Quantum materials research at the upgraded CHESS-U facility: Introducing <QM2 | Ruff, Jacob | In this talk, I will (i) introduce the <QM>2 beamline; (ii) identify the scientific questions that motivated its construction; (iii) explain the design decisions that enable its function; and (iv) highlight the unique new capabilities that it offers to users in the quantum materials community. | Session 56: General Talks |
| 711 | Atomic-Resolution Visualization of Complex Structures in Intercalated Bilayer Graphene | Bonacum, Jason; O’Hara, Andrew; Ovchinnikov, Oleg; Gordeev, Georgy; Arora, Sonakshi; Reich, Stephanie; Idrobo, Juan Carlos; Haglund, Richard; Pantelides, Sokrates; Bolotin, Kirill | In this work, we deploy aberration-corrected scanning transmission electron microscopy to directly visualize the local atomic structure of FeCl 3-intercalated bilayer (BLG) and few-layer graphene (FLG). | Session 57: Graphene: Electronic Transport and Characterization |
| 712 | Chiral symmetry breaking in rhombohedral multilayer graphene | Kheirabadi, Narjes; Hallwood, Andrew; Rogers, Jonathan; McCann, Edward; Koshino, Mikito | We model the single-particle electronic properties of rhombohedral multilayer graphene focusing on the topological surface states that yield two flat degenerate bands in the vicinity of the Fermi level. | Session 57: Graphene: Electronic Transport and Characterization |
| 713 | Direct chemical potential measurements of fractional quantum Hall states in bilayer graphene | Zibrov, Alexander; Yang, Fangyuan; Taniguchi, Takashi; Watanabe, Kenji; Young, Andrea | We report measurements of the chemical potential in high quality bilayer graphene (BLG) in the quantum Hall regime as a function of magnetic field, interlayer bias, and charge carrier density. | Session 57: Graphene: Electronic Transport and Characterization |
| 714 | Large tunable intrinsic gap in rhombohedral-stacked tetralayer graphene at half filling | Che, Shi; Myhro, Kevin; Shi, Yanmeng; Lee, Yongjin; Thilahar, Kevin; Bleich, Kevin; Smirnov, Dmitry; Lau, Chun Ning | Using transport measurements on suspended dual-gated devices, we observe an insulating ground state with a large interaction-induced transport gap up to 80 meV at the charge neutrality point. | Session 57: Graphene: Electronic Transport and Characterization |
| 715 | Energetics of complex phase diagram in a tunable bilayer graphene probed by quantum capacitance | Kuiri, Manabendra; Das, Anindya | In presence of perpendicular magnetic field, we observe Landau level crossing in our magneto-capacitance measurements with electric field. | Session 57: Graphene: Electronic Transport and Characterization |
| 716 | Quantitative Measurement of Valley Polarization in a Multicomponent Fractional Quantum Hall System | Yang, Fangyuan; Zibrov, Alexander; Taniguchi, Takashi; Watanabe, Kenji; Zaletel, Michael; Young, Andrea | In this talk, I will present quantitative measurements of valley polarization in high quality bilayer graphene quantum Hall system. | Session 57: Graphene: Electronic Transport and Characterization |
| 717 | Study of mode-projected electron-phonon coupling in graphite by time -resolved ARPES | Na, MengXing; Mills, Arthur; Boschini, Fabio; Michiardi, Matteo; Nosarzewski, Benjamin; Day, Ryan; Razzoli, Elia; Sheyerman, Alexander; Levy, Giorgio; Schneider, Michael; Zhdanovich, Sergey; Devereaux, Thomas; Kemper, Alexander; Jones, David; Damascelli, Andrea | In this work, a balance of energy and time resolution revealed a peak associated with optical excitation. | Session 57: Graphene: Electronic Transport and Characterization |
| 718 | Magnetic Effects on Topological Chiral Channels in Bilayer Graphene | Maier, John; Winn, Aaron; Jiao, Andrew; Teo, Jeffrey | In this paper, we study the effect of a magnetic field on topological chiral channels of bilayer graphene at electric domain walls. | Session 57: Graphene: Electronic Transport and Characterization |
| 719 | Energy drag and shear viscosity in interacting quantum systems | Berdanier, William; Scaffidi, Thomas; Karrasch, Christoph; Moore, Joel | Using `Coulomb drag� physics as a guide, we discuss analogues of shear viscosity in quantum systems on discrete lattices. | Session 57: Graphene: Electronic Transport and Characterization |
| 720 | Spatial measurements of ballistic and hydrodynamic signatures in Graphene | Rozen, Asaf; Ilani, Shahal | In this work, we use a scanning single electron transistor (SET) to image the local potential landscape produced by flowing electrons in an expanding channel of graphene. | Session 57: Graphene: Electronic Transport and Characterization |
| 721 | Probing exciton condensates in double layer graphene using the corbino geometry | Zeng, Yihang; Li, J.I.A.; Ghosh, Olivia; Watanabe, Kenji; Taniguchi, Takashi; Dean, Cory; Hone, James | We study the exciton coupling as a function of interlayer bias, temperature, magnetic field and dc bias. | Session 57: Graphene: Electronic Transport and Characterization |
| 722 | Direct visualization of electrostatic gating on the band structure of two-dimensional materials via Angled Resolved Photo Emission Spectroscopy (ARPES) | Joucken, Frederic; Avila, Jose; Ge, Zhehao; Quezada, Eberth; Yi, Hemian; Davenport, John; Watanabe, Kenji; Taniguchi, Takashi; Asensio, Maria; Velasco Jr., Jairo | We found that such a device geometry enabled direct visualization of the BLG bands in conjunction with their shift via electrostatic gating. | Session 57: Graphene: Electronic Transport and Characterization |
| 723 | RKKY Interaction in Graphene Landau Levels | Cao, Jinlyu; Fertig, Herbert; Zhang, Shixiong | We consider the problem of RKKY coupling of classical magnetic moments on graphene when the conduction electrons are in Landau level states. | Session 57: Graphene: Electronic Transport and Characterization |
| 724 | Texture Transitions of Quantum Hall Skryme Crystals Near Charge Neutrality in Graphene | Feshami, Braden; Fertig, Herbert | We study this question within a self-consistent Hartree-Fock theory, in which regular Skyrme crystals are stabilized by long range Coulomb interactions. | Session 57: Graphene: Electronic Transport and Characterization |
| 725 | Equilibrium-state currents in Quantum Hall graphene quantum dots and pn junctions | Lewandowski, Cyprian; Uri, Aviram; Zeldov, Eli | We focus on the case of a graphene quantum dot and a pn junction geometry. | Session 57: Graphene: Electronic Transport and Characterization |
| 726 | Enhanced Raman scattering of graphene using double resonance in silicon photonic crystal nanocavities | Machiya, Hidenori; Gomulya, Widianta; Kashiwa, Kotaro; Inoue, Taiki; Chiashi, Shohei; Maruyama, Shigeo; Kato, Yuichiro | We demonstrate enhancements of Raman scattering from graphene on L3 photonic crystals using double resonances, which originate from simultaneous enhancements by a localized guided mode and a cavity mode [1]. | Session 58: Graphene: Light Matter Interactions |
| 727 | Photonic Crystals for Nano-Light in Moir� Graphene Superlattices | Sunku, Sai; Ni, GuangXin; Jiang, Bor-Yuan; Yoo, Hyobin; Sternbach, Aaron; Alexander, McLeod; Tobias, Stauber; Xiong, Lin; Taniguchi, Takashi; Watanabe, Kenji; Kim, Philip; Fogler, Michael; Basov, Dimitri | In this work, we use infrared nano-imaging to verify this proposition and demonstrate the interference of propagating SPPs in TBG. | Session 58: Graphene: Light Matter Interactions |
| 728 | Fundamental Limits to graphene plasmonics | Ni, GuangXin; Alexander, McLeod; Sun, Zhiyuan; Wang, Lei; Xiong, Lin; Post, Kirk; Sunku, Sai; Jiang, Bor-Yuan; Hone, James; Dean, Cory; Fogler, Michael; Basov, Dimitri | Here we use nanometre-scale infrared imaging to investigate propagating plasmon polaritons in high-mobility encapsulated graphene at cryogenic temperatures. | Session 58: Graphene: Light Matter Interactions |
| 729 | Broadband mid-infrared graphene bolometer | Yuan, Shaofan; Chen, Xiaolong; Deng, Bingchen; Guo, Qiushi; Li, Cheng; Ma, Chao; Chen, Chen; Watanabe, Kenji; Taniguchi, Takashi; Xia, Fengnian | Here, we demonstrate ultra-broadband infrared graphene bolometers enabled by the large temperature coefficient of resistance and weak electron-phonon coupling in the intrinsic graphene. | Session 58: Graphene: Light Matter Interactions |
| 730 | Electronic contributions to the Raman spectrum of twisted bilayer graphene | Garcia-Ruiz, Aitor; Mucha-Kruczynski, Marcin; Thompson, Joshua; Falko, Vladimir | Using the continuum model, we study theoretically the purely electronic contributions to the Raman spectrum of twisted bilayer graphene (tBLG) for twist angles close to the magic angle [1]. | Session 58: Graphene: Light Matter Interactions |
| 731 | Photonic crystal for graphene plasmons | Xiong, Lin; Forsythe, Carlos; McLeod, Alexander; Jung, Minwoo; Sunku, Sai; Ni, GuangXin; Liu, Song; Fogler, Michael; Edgar, James; Shvets, Gennady; Dean, Cory; Basov, Dimitri | We used near-field nano-imaging techniques to study graphene plasmonic crystals at cryogenic temperatures. | Session 58: Graphene: Light Matter Interactions |
| 732 | Probing symmetry breaking in multilayer epitaxial graphene by circularly polarized magneto-infrared spectrscopy | Jiang, Yuxuan; Lu, Zhengguang; Gigliotti, James; Berger, Claire; de Heer, Walter; Smirnov, Dmitry; Jiang, Zhigang | Here, we report a magneto-infrared transmission spectroscopy study of multilayer epitaxial graphene with circularly polarized light. | Session 58: Graphene: Light Matter Interactions |
| 733 | Wide Angle Electronically Tunable Enhanced Light Absorption in Nanopatterned Graphene | Safaei, Alireza; Chandra, Sayan; N. Leuenberger, Michael; Chanda, Debashis | Here, we demonstrate a novel design of an optical cavity-coupled hexagonal array of nanohole and nanodisk in monolayer CVD-grown graphene to excite Dirac plasmon. | Session 58: Graphene: Light Matter Interactions |
| 734 | Theory of entangled-plasmon-pair generation in graphene | Sun, Zhiyuan; Basov, Dimitri; Fogler, Michael | We study spontaneous parametric down conversion of terahertz photons into entangled plasmon pairs in graphene. | Session 58: Graphene: Light Matter Interactions |
| 735 | Pseudo-Euler equations from nonlinear optics: plasmon-assisted photodetection beyond hydrodynamics | Principi, Alessandro; Bandurin, Denis; Rostami, Habib; Polini, Marco | Here we show that such conversion and subsequent rectification occur well beyond the frequency regime in which hydrodynamic theory applies. | Session 58: Graphene: Light Matter Interactions |
| 736 | Strong Dirac Photoconductance in Charge Neutral Graphene-Boron Nitride-Graphene Heterostructures | Arp, Trevor; Wan, Jacky; Gabor, Nathaniel | In a fully encapsulated heterostructure (BN-G-BN-G-BN), we find that the differential photoconductance significantly increases when both graphene layers are near charge neutrality. | Session 58: Graphene: Light Matter Interactions |
| 737 | Plasmon?Plasmon Interactions and Radiative Damping of Plasmons in Nanostructured Graphene | Perebeinos, Vasili | In this work [1], we demonstrate both theoretically and experimentally that the plasmon?plasmon and plasmon?radiation interactions modify strongly the plasmon resonance energy, radiative damping, and oscillator strength in graphene nanoribbon arrays. | Session 58: Graphene: Light Matter Interactions |
| 738 | Optical Properties of Graphene/Al Hetero-film | Wang, Haozhe; Fu, Sidan; Leong, Wei Sun; Liu, Jifeng; Kong, Jing | Here, we report a counterintuitive phenomenon where transparency of a hetero-film is significantly higher compared to the original metal film. | Session 58: Graphene: Light Matter Interactions |
| 739 | Resistively detected microwave absorption in highly twisted bilayer graphene | Zhang, Liangji; Lane, Justin; Zhang, Chenyu; Li, J.I.A.; Dean, Cory; Pollanen, Johannes | We find that the differential magneto-conductance of the device, defined as the difference in conductance with and without microwave irradiation, shows well-defined oscillations in a large filling factor range down to the lowest Landau level. | Session 58: Graphene: Light Matter Interactions |
| 740 | Resonant terahertz photoresponse and superlattice plasmons in graphene field-effect transistors | Bandurin, Denis; Svintsov, Dmitry; Gayduchenko, Igor; Xu, Shuigang; Principi, Alessandro; Moskotin, Maksim; Tretyakov, Ivan; Yagodkin, Denis; Zhukov, Sergey; Taniguchi, Takashi; Watanabe, Kenji; Grigorieva, Irina; Polini, Marco; Goltsman, Gregory; Geim, Andre; Fedorov, Georgy | In this talk, we will demonstrate plasmon-assisted resonant detection of THz radiation by antenna-coupled graphene FETs that act as both rectifying elements and plasmonic Fabry-Perot cavities amplifying the photoresponse. | Session 58: Graphene: Light Matter Interactions |
| 741 | Shape of the zeroth Landau level in graphene with non-diagonal disorder | Malla, Rajesh; Raikh, Mikhail | We study theoretically the structure of the states in n = 0 LL in the presence of bond disorder. | Session 59: Graphene: Magnetotransport |
| 742 | The role of edge effects in magnetotransport measurements of graphene hall bars | Ghosh, Olivia; Zeng, Yihang; Li, J.I.A.; Watanabe, Kenji; Taniguchi, Takashi; Dean, Cory | Here we investigate how the nature of the sample edge affects transport measurements, particularly for the case of the quantum Hall effect regime where the chiral edge modes are presumed to be topologically protected and therefore insensitive to details of the edge. | Session 59: Graphene: Magnetotransport |
| 743 | Magnetotransport in graphene 30-degree quasicrystal | Engelke, Rebecca; Yoo, Hyobin; Weiter, William; Kim, Philip | We find the angle of the twisted heterostructure to be within 0.2 degrees of 30. | Session 59: Graphene: Magnetotransport |
| 744 | Novel two-component ground state at 1/3 + 1/3 filling in strongly coupled graphene double-layer | Li, J.I.A.; Zeng, Yihang; Shi, Qianhui; Ghosh, Olivia; Watanabe, Kenji; Taniguchi, Takashi; Hone, James; Dean, Cory | Here we report experimental observation of incompressible state 1/3 + 1/3 filling. | Session 59: Graphene: Magnetotransport |
| 745 | Extraordinary magnetoresistance in encapsulated monolayer graphene | Zhou, Bowen; Taniguchi, Takashi; Watanabe, Kenji; Henriksen, Erik | We report a study on the phenomenon of extraordinary magnetoresistance (EMR) in boron nitride encapsulated monolayer graphene devices. | Session 59: Graphene: Magnetotransport |
| 746 | A different Landau level energy diagram in bilayer graphene proximitized by WSe2 | Chuang, Ya-Wen; Li, Jing; Fu, Hailong; Watanabe, Kenji; Taniguchi, Takashi; Zhu, Jun | Here we report measurements on the Landau level energy gaps of bilayer graphene adjacent to 1-2 layer WSe 2 through van der Waals stacking. | Session 59: Graphene: Magnetotransport |
| 747 | Observation of Cyclotron Resonance in Dual-Gated Bilayer Graphene | Russell, Jordan; Pack, Jordan; Kapoor, Yashika; Taniguchi, Takashi; Watanabe, Kenji; Henriksen, Erik | We present measurements of the cyclotron resonance in boron nitride encapsulated, dual-gated bilayer graphene by way of infrared transmission magnetospectroscopy. | Session 59: Graphene: Magnetotransport |
| 748 | Graphene Quantum Point Contact for Quantum Hall Interferometry | Werkmeister, Thomas; Ronen, Yuval; Lee, Si Young; Shin, Young Jae; Najafabadi, Danial; Watanabe, Kenji; Taniguchi, Takashi; Kim, Philip | We will present a quantum point contact (QPC) that functions in the quantum Hall regime, a necessary ingredient for interferometers, and several devices that we characterize through transport measurements at cryogenic temperatures and strong magnetic field. | Session 59: Graphene: Magnetotransport |
| 749 | Aharonov-Bohm Phase and Valley Splitting in Strained Graphene P-N Junction | Nepal, Rabindra; Prabhakar, Sanjay; Melnik, Roderick; Kovalev, Alexey | We study two effects in a strained graphene layer with P-N junction: the Lorentz force due to fictitious magnetic fields and Aharonov-Bohm (AB) phase. | Session 59: Graphene: Magnetotransport |
| 750 | Influence of a Gaussian nanobubble on quantum Hall conductance across a p-n junction in graphene | Myoung, Nojoon; Park, Hee Chul | Here, we report a theoretical investigation of influence of a Gaussian nanobubble on quantum Hall conductance with a p-n junction in graphene, showing strain-induced conductance oscillations as the position and strain strength of the Gaussian nanobubble vary. | Session 59: Graphene: Magnetotransport |
| 751 | Splitting of conductance resonance through a magnetic quantum dot in graphene | Myoung, Nojoon; Ryu, Jung-Wan; Park, Hee Chul; Lee, Seung; Woo, Sungjong | We report a dual resonance feature in ballistic conductance through a quantum Hall graphene nanoribbon with a magnetic quantum dot. | Session 59: Graphene: Magnetotransport |
| 752 | Giant pseudo-magnetic fields, valley polarization and topological channels by nanoscale strain engineering of monolayer graphene | Hsu, Chen-Chih; Wang, Jiaqing; Teague, Marcus; Yeh, Nai-Chang | We report the use of nearly strain-free PECVD-grown graphene [1] to induce controllable strain and pseudo-magnetic fields (B s) by placing graphene on periodic nanostructure arrays [2]. | Session 59: Graphene: Magnetotransport |
| 753 | Scaling and quantum phase transitions of disordered graphene in the quantum Hall regime. | Dos Santos, Tatiane; Lima, Leandro; Lewenkopf, Caio | To elucidate this issue, we address the problem by calculating the longitudinal and Hall resistances of graphene systems up to 10^5 atoms in a Hall bar geometry via the Landauer-B�ttiker formalism. | Session 59: Graphene: Magnetotransport |
| 754 | Spin-relaxation in superconducting graphene | Kochan, Denis; Fabian, Jaroslav | In my talk I will focus on spin-relaxation in graphene proximitized by an s-wave superconductor. | Session 59: Graphene: Magnetotransport |
| 755 | Fermi surface anisotropy of graphene measured by ballistic transport experiments on antidot lattice samples | Yagi, Ryuta; Oka, Takushi; Ebisuoka, Ryoya; Hirahara, Taiki; Watanabe, Kenji; Taniguchi, Takashi | Here we describe a ballistic transport experiment using high-quality graphene that revealed Fermi surface anisotropy in the magnetoresistance. | Session 60: Graphene: Transport Properties |
| 756 | Universal voltage scaling due to self-averaging of quantum corrections in graphene | Arabchigavkani, Nargess; Somphonsane, Ratchanok; Ramamoorthy, Harihara; He, Guanchen; Nathawat, Jubin; Yin, Shenchu; Bird, Jonathan; Barut, Bilal; Zhao, Miao; Jin, Zhi; Fransson, Jonas | For theoretical insight into the origins of this behavior, we formulate a model for weak-localization in the presence of nonlinear transport. | Session 60: Graphene: Transport Properties |
| 757 | Uniform doping of graphene close to the Dirac point by polymer-assisted assembly of molecular dopants | Park, Yung; He, Hans; Kim, Kyung Ho; Kubatkin, Sergey; Lara-Avila, Samuel | Here we show that air-stable doping of epitaxial graphene on SiC-achieved by spin-coating deposition of 2,3,5,6-tetrafluoro-tetracyano-quino-dimethane (F4TCNQ) incorporated in poly(methyl-methacrylate)-proceeds via the spontaneous accumulation of dopants at the graphene-polymer interface and by the formation of a charge-transfer complex that yields low-disorder, charge-neutral, large-area graphene with carrier mobilities ~70,000cm 2V -1s -1 at cryogenic temperatures. | Session 60: Graphene: Transport Properties |
| 758 | Thermal broadening in graphene-based electromechanical nanosensors and molecular electronic junctions. | Ochoa, Maicol; Zwolak, Michael | We have investigated this idea by analyzing representative models. | Session 60: Graphene: Transport Properties |
| 759 | Excitons beyond the effective mass approximation: application to biased bilayer graphene | Li, Pengke; Appelbaum, Ian | Focusing on electrostatically-biased bilayer graphene as an example where quartic (and higher) dispersion terms are necessary, we present a semi-analytic theory used to investigate the properties of ground and excited excitonic states. | Session 60: Graphene: Transport Properties |
| 760 | Theory of thermoelectric transport in bilayer graphene | Zarenia, Mohammad; Vignale, Giovanni | We present a simple theory of thermoelectric transport in bilayer graphene and report our results for the electrical resistivity, the thermal resistivity, and the Wiedemann-Franz (WF) ratio as functions of doping density and temperature. | Session 60: Graphene: Transport Properties |
| 761 | Quantum limit of thermal conductance in Graphene | Das, Anindya; SRIVASTAV, SAURABH; Banerjee, Sumilan | Quantum limit of thermal conductance in Graphene | Session 60: Graphene: Transport Properties |
| 762 | Breakdown of the law of reflection at a disordered graphene edge | Walter, Elias; Rosdahl, Tomas; Akhmerov, Anton; Hassler, Fabian | We present proof that a charge-neutral disordered graphene boundary results in a diffusive electron reflection even when the electron wavelength is much longer than the disorder correlation length. | Session 60: Graphene: Transport Properties |
| 763 | Ultrafast Valley polarization in gapped graphene | Oliaeimotlagh, Seyyedeh Azar; Apalkov, Vadym; Stockman, Mark | We study numerically the ultrafast valley polarization in gapped graphene that can be accessed and controlled by a single cycle of a circularly polarized intense pulse. | Session 60: Graphene: Transport Properties |
| 764 | All-Electronic Thermal Transport With Nonlocal Noise Thermometry in Graphene | Waissman, Jonah; Talanov, Artem; Shin, Young Jae; Najafabadi, Danial Haei; Arino, Marine; Bartolomei, Hugo; Kim, Philip | Here, we demonstrate a new technique to achieve all-electronic thermal transport in a van der Waals material. | Session 60: Graphene: Transport Properties |
| 765 | Studying the effects of strain in graphene using a MEMS device and electronic transport measurements at low temperatures | Anderson, Paul; Huang, Yifan; Qubbaj, Sara; Zhou, Qin; Ojeda-Aristizabal, Claudia | Here we present preliminary electronic transport experiments at low temperatures on a suspended graphene where strain is applied through a sophisticated micro-electro-mechanical systems (MEMS). | Session 60: Graphene: Transport Properties |
| 766 | Ballistic Transport of Epitaxial Graphene Nanoribbons on SiC | Hu, Yue; Hu, Yiran; Deniz, Dogukan; Prudkovskiy, Vladimir; Turmaud, Jean-Philippe; Gigliotti, James; Ma, Lei; Berger, Claire; de Heer, Walt A. | We introduce amorphous carbon as contact pads and high temperature annealing to reduce the edge roughness of ribbons and the contamination from resist residue. | Session 60: Graphene: Transport Properties |
| 767 | Electron-phonon Cerenkov instability in graphene revealed by global and local noise measurements | Dwyer, Bo; Sanchez-Yamagishi, Javier; Andersen, Trond; Rodriguez Nieva, Joaquin; Agarwal, Kartiek; Taniguchi, Takashi; Watanabe, Kenji; Demler, Eugene; Kim, Philip; Park, Hongkun; Lukin, Mikhail | We find that when fully encapsulated graphene is driven with a sufficiently high DC current, the drift velocity of the electrons exceeds the phase velocity of sound. | Session 60: Graphene: Transport Properties |
| 768 | Elastic response of the electron fluid in intrinsic graphene: The collisionless regime | Link, Julia; Sheehy, Daniel; Narozhny, Boris; Schmalian, Joerg | We determine ?(?) for graphene at the charge neutrality point in the collisionless regime, including the leading corrections due to the electron-electron Coulomb interaction. | Session 60: Graphene: Transport Properties |
| 769 | Band engineering of semiconductor artificial graphene and exploration of flat band physics(*) | Du, Lingjie; Pfeiffer, Loren; West, Kenneth; Fallahi, Saeed; Gardner, Geoffrey; Manfra, Michael; Pellegrini, Vittorio; Wind, Shalom; Pinczuk, Aron | Here, we present effective band engineering of semiconductor AG with multiple control knobs that offer flexible and effective exclusive tunability of electron properties. | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 770 | Fabricating shallow 2D systems in GaAs/AlGaAs heterostructures towards the creation of Artificial Graphene | Ashlea Alava, Yonatan; Klochan, Oleh; WANG, Qingwen; Wieck, Andreas; Ludwig, Arne; Ritzmann, Julian; Hamilton, Alex | Here we present results on the fabrication of 2D systems in accumulation mode heterostructures as shallow as 35 nm. | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 771 | A novel route to achieve two dimensional (2D) carrier confinement in a wedge-shaped polar semiconductor structure | Deb, Swarup; Dhar, Subhabrata | A novel route to achieve two dimensional (2D) carrier confinement in a wedge-shaped polar semiconductor structure | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 772 | Classical elements in the magnetoconductance of two-dimensional Lorentz gases | Horn-Cosfeld, Beate; Schluck, Jakob; Siboni, Nima Hamidi; Horbach, J�rgen; Heinzel, Thomas | Classical elements in the magnetoconductance of two-dimensional Lorentz gases | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 773 | Temperature dependence of transverse magnetic focusing in high-mobility GaAs/AlGaAs | Gupta, Adbhut; Heremans, Jean; Fallahi, Saeed; Manfra, Michael | Temperature dependence of transverse magnetic focusing in high-mobility GaAs/AlGaAs | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 774 | Carrier Lifetime Analysis in a Transistor Laser by Using Non-Equilibrium Green�s Function Method with Effective Bond-Orbital Model | Hsiao, Fu-Chen; Chang, Yia-Chung; Dallesasse, John | Carrier injection and recombination in a single quantum well AlGaAs/InGaP/GaAs/InGaAs transistor laser (TL) is examined theoretically with the non-equilibrium Green�s function (NEGF) method | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 775 | Acoustic Nanostructures for Charge Carrier Confinement in GaAs/AlGaAs Multiple Quantum Wells | Vallejo, Kevin; Schuck, Christopher; Sautter, Kathryn; Garrett, Trent; Weltner, Ariel; Liang, Baolai; Hua, Zilong; Hurley, David; Simmonds, Paul | We verify carrier confinement and transport using metallic gratings on the surface of the sample to generate and detect surface acoustic phonons. | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 776 | The Effect of Nanostructure on Near-Infrared Absorption in M-Plane AlGaN/(In)GaN Heterostructures | Nguyen, Trang; Shirazi-Hosseini-Dokht, MohammadAli; Cao, Yang; Senichev, Alexander; Dzuba, Brandon; Diaz, Rosa; Gardner, Geoffrey; Malis, Oana; Manfra, Michael | We discuss the consequences of these nanostructures on ISB absorption energy and linewidth. | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 777 | Influence of QD Morphology on Photoluminescence in GaSb/GaAs Multilayers | Greenhill, Christian; Zech, Eric; Chang, Alexander; Clark, Stephen; Balakrishnan, Ganesh; Goldman, Rachel | We investigate the structural and optical properties of GaSb/GaAs multilayers, with and without 3D nanostructures, using cross-sectional transmission electron microscopy, atom probe tomography (APT), and PL. | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 778 | Lattice-matched In0.17Al0.83N/GaN heterostructures for near-infrared intersubband absorption | Senichev, Alexander; Nguyen, Trang; Diaz, Rosa; Dzuba, Brandon; Shirazi-Hosseini-Dokht, MohammadAli; Cao, Yang; Manfra, Michael; Malis, Oana | Here, we demonstrate that InAlN/GaN structures with saturated indium composition of 0.17 can be grown by plasma-assisted molecular beam epitaxy over a wide range of growth conditions and constructed the growth diagram for lattice-matched InAlN layers. | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 779 | Integrated III-V/Si Visible and IR Nanowire Photodetectors | Shetty, Arjun; Barrera, Eduardo; Sfigakis, Francois; Robson, Mitchell; Isik, Nebile; Goosney, Curtis; LaPierre, Ray; Baugh, Jonathan | Integrated III-V/Si Visible and IR Nanowire Photodetectors | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 780 | White-light Emitted InGaN Nanorods Grown on Pyramided Si Substrate | Lin, Chun-Yeh; Wu, Chung-Lin; Tsai, Shu-Ju; Wong, Sheng-Shong; Tsai, Nien-Ting | In this study, white-light emitted InGaN nanorods were grown on pyramided Si substrate by plasma-assisted molecular beam epitaxy system (PA-MBE) with fixed In/Ga flux ratio. | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 781 | Tensile-Strained Ge Quantum Dots on (111) and (110) Surfaces | Sautter, Kathryn; Schuck, Christopher; Garrett, Trent; Weltner, Ariel; Vallejo, Kevin; Simmonds, Paul | Theory shows that placing Ge under tensile strain will allow us to engineer its electronic band structure. | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 782 | Light Emission from Direct Bandgap Hexagonal Silicon Germanium | Fadaly, Elham; Dijkstra, Alain; Suckert, Jens Ren�; Verheijen, Marcel; Koelling, Sebastian; Finley, Jonathan; Botti, Silvana; Haverkort, Jos; Bakkers, Erik | We demonstrate photoluminescence of hex-Ge at 3.5 �m at low temperatures and up to room temperature. | Session 61: Group IV- and III-V-Based Low-Dimensional Semiconductor Heterostructures |
| 783 | Weyl-Kondo semimetals: Symmetries, signatures and nearby quantum phases | Grefe, Sarah | I will present these results, and discuss their place in the heavy fermion global phase diagram that the topological paradigm has enriched. | Session 62: Heavy Fermion Systems as a Platform for Strongly Correlated Electronic Topology |
| 784 | Kondo-Weyl semimetal behavior in Ce3Bi4Pd3 | Dzsaber, Sami; Eguchi, Gaku; Zocco, Diego; sidorenko, Andrei; Yan, Xinlin; Prokofiev, Andrey; Prochaska, Lukas; Shiroka, T.; Blaha, P.; Rubel, O.; Grefe, S.E.; Lai, H.; Si, Qimiao; Buehler-Paschen, Silke | Indeed, by tuning the spin-orbit coupling strength by Pt-Pd substitution in Ce 3Bi 4(Pt,Pd) 3, we have discovered a transformation from a Kondo insulator in Ce 3Bi 4Pt 3 to a semimetal in Ce 3Bi 4Pd 3 [1]. | Session 62: Heavy Fermion Systems as a Platform for Strongly Correlated Electronic Topology |
| 785 | Evidence for Weyl fermions in a heavy fermion semimetal YbPtBi | Guo, Chunyu; Wu, Fan; Wu, Zhongzheng; Smidman, Michael; Cao, Chao; Bostwick, Aaron; Jozwiak, Chris; Rotenberg, Eli; Liu, Yang; Steglich, Frank; Yuan, Huiqiu | Here, we report electronic structure calculations, ARPES, magneto-transport and calorimetric measurements of the canonical heavy fermion semimetal YbPtBi[1], we find triply degenerate points existed in band structure, which split into pairs of Weyl nodes under applying magnetic field. | Session 62: Heavy Fermion Systems as a Platform for Strongly Correlated Electronic Topology |
| 786 | Excitons in topological Kondo insulators: Theory of thermodynamic and transport anomalies in SmB6 | Knolle, Johannes | Here, we show that TKIs are susceptible to the formation of excitons and magnetoexcitons. | Session 62: Heavy Fermion Systems as a Platform for Strongly Correlated Electronic Topology |
| 787 | Topological Kondo insulators and semimetals | Erten, Onur | In this talk, I will discuss the new realization that spin orbit coupling changes the topology leading to new kinds of topological orders. | Session 62: Heavy Fermion Systems as a Platform for Strongly Correlated Electronic Topology |
| 788 | Spin-orbit interaction and quasiparticle bands in locally non-centrosymmetric heavy-fermion systems | Zwicknagl, Gertrud; Khim, Seunghyun; Brando, Manuel; Geibel, Christoph | In this talk, we present calculations of the heavy quasiparticle bands in Ce- and Yb-based HFS from the tetragonal 122-family. | Session 63: Heavy Fermion and Correlated Electron Metals |
| 789 | The high-field/high-pressure relationship of magnetic order and nematicity in the heavy fermion superconductor CeRhIn5 | Helm, Toni; Grockowiak, Audrey; Balakirev, Fedor; Singleton, John; Shirer, Kent; Koenig, Markus; Bauer, Eric; Ronning, Filip; Tozer, Stanley; Moll, Philip | Here we report high-field (up to 65 T) / high-pressure (up to 40 kbar) studies of magnetotransport in CeRhIn 5. | Session 63: Heavy Fermion and Correlated Electron Metals |
| 790 | Quantum confinement of electronic states in a bulk heavy fermion crystal | Gauthier, Nicolas; Sobota, Jonathan; Hashimoto, Makoto; Shen, Zhixun | Surprisingly, we recently observed the presence of confined electronic states in a bulk crystal of CeCoIn 5, a prototypical heavy fermion superconductor [2]. | Session 63: Heavy Fermion and Correlated Electron Metals |
| 791 | Structural and Physical Properties of CeAu2Bi: a New Frustrated Antiferromagnet Candidate | Moda Piva, Mario; Ronning, Filip; Thompson, Joe; Pagliuso, Pascoal; Rosa, Priscila | Here we report the structural and physical properties of the new heavy-fermion compound CeAu 2Bi. | Session 63: Heavy Fermion and Correlated Electron Metals |
| 792 | Theory of multipolar order and unconventional superconductivity in heavy fermion systems; importance of nonlocal vertex corrections | Tazai, Rina; Kontani, Hiroshi | To solve these issues, we study higher-rank multipole fluctuations by considering the vertex corrections (VCs), which represent higher-order many body effects, on the basis of multi-orbital Periodic Anderson Model [1]. | Session 63: Heavy Fermion and Correlated Electron Metals |
| 793 | Magnon Bose-Einstein Condensation in a Heavy Fermion Metal | Gazit, Snir; Volkov, Pavel; Pixley, Jed | Motivated by these observations, we consider a one-dimensional two-leg spin ladder with a valence bond solid ground state doped with itinerant fermions. | Session 63: Heavy Fermion and Correlated Electron Metals |
| 794 | Magnetism and Electronic Correlations in Quasi-1D Kondo Lattices | Ronning, Filip; Asaba, Tomoya; Bauer, Eric; Thompson, Joe | With this motivation we investigate quasi-1D 4f and 5f-based metallic compounds possessing non-trivial magnetic order. | Session 63: Heavy Fermion and Correlated Electron Metals |
| 795 | Emergence of Kondo lattice behavior in a van der Waals itinerant ferromagnet Fe3GeTe2 | Zhang, Yun | Here, using angle-resolved photoemission spectroscopy, scanning tunneling microscopy, physical properties measurements and the first-principles calculations, we observe the HF state in a 3 d-electron van der Waals ferromagnet Fe 3GeTe 2. | Session 63: Heavy Fermion and Correlated Electron Metals |
| 796 | A new non-Fermi-liquid-like layered Cr boride | Simonson, Jack; Franco, Cristian; Xia, Bingying; Duke, Ryan; Prakash, Om; Aronson, Meigan | We report the discovery, the synthesis of large high quality single crystals, the crystal structure, and the basic properties of Cr 4AlB 4, a new member of the electrically conductive and damage tolerant MAB phase borides. | Session 63: Heavy Fermion and Correlated Electron Metals |
| 797 | Charge dynamics and untapped redox potential in a Mn1+ – based electrode. | Sar, Divyanshi; Breitweiser, S. Alexander; Qiao, Ruimin; Firouzi, Ali; Miao, Lin; Basak, Rourav; Motallebi, Shahrokh; Valencia, Christian; Fujimoto, Mai; Wessells, Colin; Israel, Hannah; Chuang, Yi-De; Yang, Wanli; Wray, Lewis | I will present an analysis of MnHCMn charge dynamics with bulk- and surface-sensitive soft X-ray absorption spectroscopy (sXAS) and resonant inelastic X-ray scattering (RIXS) at the Mn L3 edge. | Session 63: Heavy Fermion and Correlated Electron Metals |
| 798 | Scanning Tunneling Microscopy and Spectroscopy on the Metallic Delafossite PdCoO2 | CHAKRABORTI, DIBYASHREE; Khim, Seunghyun; Mackenzie, Andrew; Wahl, Peter | In our study, we have investigated the different surface terminations of PdCoO 2 with low temperature Scanning Tunneling Microscopy. | Session 63: Heavy Fermion and Correlated Electron Metals |
| 799 | Collective Modes in SrTi1-xNbxO3 Measured with meV-Resolution EELS | Rubeck, Samantha; Rak, Melinda; Mitrano, Matteo; Husain, Ali; Chen, Jin; Edelman, Alexander; Littlewood, Peter; Abbamonte, Peter | In this talk, I will present measurements of the collective charge excitations of SrTi 1-xNb xO 3 using momentum-resolved inelastic electron scattering (M-EELS). | Session 63: Heavy Fermion and Correlated Electron Metals |
| 800 | Infrared nano-imaging of Luttinger liquid plasmons in single walled carbon nanotubes | Wang, Sheng; Wang, Feng | We performed comprehensive infrared nano-imaging of Luttinger liquid plasmons in carbon nanotubes with different parameters and provide novel insights into Luttinger liquid physics in carbon nanotubes. | Session 63: Heavy Fermion and Correlated Electron Metals |
| 801 | Investigation of Broken Time Reversal Symmetry in the Pr-rich side of Pr1-xNdxOs4Sb12 | Ho, Pei-Chun; MacLaughlin, Douglas; Maple, M Brian; Shu, Lei; Hillier, Adrian; Bernal, Oscar; Yanagisawa, Tatsuya; Biswas, P. K.; Zhang, Jian; Tan, Cheng; Hishida, Shoji; McCullough-Hunter, Taylor | Investigation of Broken Time Reversal Symmetry in the Pr-rich side of Pr1-xNdxOs4Sb12 | Session 63: Heavy Fermion and Correlated Electron Metals |
| 802 | Tilted Weyl-Kondo Semimetal in Heavy Fermion Systems | Grefe, Sarah; Lai, Hsin-Hua; Paschen, Silke; Si, Qimiao | In this study, we generalize the periodic Anderson model to realize a Tilted Weyl-Kondo Semimetal (TWKSM). | Session 63: Heavy Fermion and Correlated Electron Metals |
| 803 | Dannie Heineman Prize for Mathematical Physics Talk: Solvable systems of nonlinear ODEs: old and new results | Calogero, Francesco | Dannie Heineman Prize for Mathematical Physics Talk: Solvable systems of nonlinear ODEs: old and new results | Session 64: Heineman and Oppenheim Award Session |
| 804 | Irwin Oppenheim Award Talk: The Thermodynamic Uncertainty Relation: Theoretical Introduction | Gingrich, Todd; Horowitz, Jordan | In this talk I will outline this TUR and illustrate the large-deviation-theoretic arguments underlying its derivation. | Session 64: Heineman and Oppenheim Award Session |
| 805 | Irwin Oppenheim Award Talk: The Thermodynamic Uncertainty Relation: Applications And Extensions | Horowitz, Jordan; Gingrich, Todd | In this talk, I will discuss examples drawn from the literature of how one can apply the thermodynamic uncertainty relation to gain insight into the design principles underpinning the function of such molecular-scale devices as stochastic heat engines, molecular motors, self assembly, chemical kinetics and nonlinear response. | Session 64: Heineman and Oppenheim Award Session |
| 806 | Field-induced ferrohastatic order in cubic and tetragonal heavy fermion materials | Flint, Rebecca; van Dyke, John; Kornjaca, Milan | In this talk, we develop a simple, yet realistic model of ferrohastatic order in both cubic and tetragonal symmetries, and elaborate its experimental signatures and behavior in field, where it is a good candidate to explain the observed heavy Fermi liquids. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 807 | Kondo hybridization and enigmatic f-quasiparticles emerging from deep within the antiferromagnetic phase of USb2 | Giannakis, Ioannis; Leshen, Justin; Kavai, Mariam; Ran, Sheng; Saha, Shanta; Butch, Nicholas; Aynajian, Pegor | At T*=45K we find an electronic transition through the abrupt emergence of non-trivial sharp 5 f quasiparticles, whose appearance agrees with the sudden release of entropy seen in specific heat. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 808 | ARPES/STM study of the surface terminations and 5 f-electron character in URu2Si2 | Zhang, Wen | Here we present a detailed characterization of different surface terminations in URu 2Si 2 by angle-resolved photoemission spectroscopy, in conjunction with scanning tunneling spectroscopy and dynamical mean-field theory calculations that may unveil a piece of this puzzle. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 809 | Gaussian fluctuation corrections to a mean-field theory of complex hidden order in URu2Si2 | Shen, Pengtao; Dzero, Maxim | Specifically, we employ the mean-field theory for the hidden order which describes the hidden order parameter by an average of the hexadecapole operator. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 810 | Pressure-Induced Rotational Symmetry Breaking in URu2Si2 | Choi, Jaewon; Ivashko, Oleh; Dennler, Nik; Huecker, Markus; Aoki, Dai; von Arx, Karin; Gerber, Simon; Gutowski, Olot; Fischer, Mark; Strempfer, Joerg; Zimmermann, Martin v.; Chang, Johan | Here, we report a hard x-ray diffraction study of the single crystal URu 2Si 2 under hydrostatic pressure. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 811 | Temperature T vs Os concentration x phase diagram for URu2-xOsxSi2 single crystals | Breindel, Alexander; Sasmal, Kalyan; Pouse, Naveen; Wolowiec, Christian; Ran, Sheng; Maple, M Brian | In this talk, we present the T vs x phase diagram, based on electrical resistivity, specific heat, magnetization, and thermal expansion measurements as a function of temperature and pressure, for Czochralski grown URu 2-xOs xSi 2 single crystals. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 812 | Pressure tuning in URu2Si2-xPx | Chappell, Greta; Graf, David; Huang, Kevin; Gallagher, Andrew; Baumbach, Ryan | We will present the resulting T – x – P phase diagram and discuss the ordered states in the electronic phase space surrounding URu 2Si 2. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 813 | Observation of the hybridization gap in different ground states of URu2-xFexSi2 and URu2Si2-xPx | Zhang, Shengzhi; Chappell, Greta; Baumbach, Ryan; Pouse, Naveen; Maple, M Brian; Greene, Laura; Park, Wan Kyu | We will present conductance spectra as a function of temperature and chemical substitution and discuss the correlation between hybridization process and emergent ground states. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 814 | Optical conductivity of URu2Si2-xPx from the hidden-order to the antiferromagnetic phase | Zimmers, Alexandre; Lobo, Ricardo; Baumbach, Ryan | We report the optical spectroscopy of the URu 2Si 2-xP x heavy fermion chemical substitution series. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 815 | Complex order above the Kondo Coherence temperature in UPt2Si2 and UCr2Si2 | Baumbach, Ryan; Lai, You; Chappell, Greta; Graf, David; Yan, Xin; Mydosh, John | We will focus on efforts to identify the order parameters for these phases. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 816 | Possible structural quantum phase transition in UCr2-xRuxSi2 | Lai, You; Chappell, Greta; Graf, David; Siegrist, Theo; Neu, Jennifer; Xin, Yan; Baumbach, Ryan | We report an investigation of the structural, thermodynamic, and electrical transport properties of the chemical substitution series UCr 2-xRu xSi 2. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 817 | Unveiling Hidden Orders: Magnetostriction as a Probe of Multipolar-Ordered States | Patri, Adarsh; Sakai, Akito; Lee, SungBin; Paramekanti, Arun; Nakatsuji, Satoru; Kim, Yong-Baek | In this talk, we theoretically propose a novel and powerful means to directly probe higher-order symmetry breaking: magnetostriction. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 818 | Sequential Localization and Strange-metal Behavior in a Multipolar Kondo System | Paschen, Silke; Cai, Ang; Nica, Emilian; Liu, Chia-Chuan; Yu, Rong; Ingersent, Kevin; Si, Qimiao | We are able to understand this behavior by advancing a theory of sequential destruction of an SU(4) spin-orbital-coupled Kondo entanglement in an SU(4) Bose-Fermi Kondo model, which represents an effective model for a multipolar Kondo lattice system with Kugel�Khomskii interaction. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 819 | Switching the propagation vector of hidden-order phases in Ce3Pd20Si6 with a magnetic field | Inosov, Dmytro; Portnichenko, Pavlo; Nikitin, Stanislav; Prokofiev, Andrey; Buehler-Paschen, Silke | Here we use inelastic neutron scattering to demonstrate that this transition is associated with a switching in the propagation vector of the antiferroquadrupolar order from (111) to (100). | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 820 | Theoretical X-ray spectroscopic study of 5f-electron signatures in actinide materials | Chiu, Wei-ting; Zhu, Jian-Xin | In this work, we build a single-impurity Anderson model for the materials, and use exact diagonalization method to calculate its eigenenergies and eigenstates. | Session 65: Hidden Order in URu2Si2 and Other Compounds |
| 821 | High-fidelity single and two-qubit gates in germanium | Veldhorst, Menno | Here, I will present germanium as a material that can combine these assets to form an excellent quantum material [1]. | Session 66: Hole Spins in Semiconductor Quantum Dots |
| 822 | Hole spins in quantum wires and quantum dots | Hamilton, Alex | In GaAs hole quantum wires we observe highly anisotropic spin properties, which can be used to directly probe the spin-orbit interaction in holes [1.2], as well as evidence for an emergeny spin gap. | Session 66: Hole Spins in Semiconductor Quantum Dots |
| 823 | A Ge heavy hole spin qubit | Katsaros, Georgios | A Ge heavy hole spin qubit | Session 66: Hole Spins in Semiconductor Quantum Dots |
| 824 | Quantum electronics with holes in Si/Ge | De Franceschi, Silvano | I will present recent experiments dealing with spin-related effects in siicon quantum dot devices, and discuss their implications for hole-spin qubits. | Session 66: Hole Spins in Semiconductor Quantum Dots |
| 825 | Hole quantum dots in planar silicon and in GeSi nanowires | Zwanenburg, Floris | In highly tuneable hole quantum dots [2, 3], we observe shell filling of new orbitals and corresponding Pauli spin blockade [4]. | Session 66: Hole Spins in Semiconductor Quantum Dots |
| 826 | Quantum Spin Liquid phases in extended Kitaev models on the Honeycomb Lattice | Liu, Zheng-Xin; Normand, Bruce | Motivated by this issue, we studied the K-? model (K =6.8 meV and ?= 9.5meV) which was the minimal model prosed to describe the low-energy physics of ?-RuCl 3. | Session 67: Honeycomb Lattice and Other Low-D Models |
| 827 | Field-orientation-dependent spin dynamics of the Kitaev honeycomb model | Ronquillo, David; Vengal, Adu; Trivedi, Nandini | The main question we address is how to probe the fractionalized excitations of a quantum spin-liquid (QSL), for example, in the Kitaev honeycomb model. | Session 67: Honeycomb Lattice and Other Low-D Models |
| 828 | Chiral spin liquid near the ferromagnetic Kitaev regime under a magnetic field | Gordon, Jacob; Catuneanu, Andrei; Sorensen, Erik; Kee, Hae-Young | Here we present a microscopic theory describing the existence of a CSL near the FM Kitaev regime under a magnetic field. | Session 67: Honeycomb Lattice and Other Low-D Models |
| 829 | Classical Kitaev model in a magnetic field | Rau, Jeffrey; McClarty, Paul; Penc, Karlo; Moessner, Roderich | We study the classical version of Kitaev’s honeycomb model in the presence of a magnetic field. | Session 67: Honeycomb Lattice and Other Low-D Models |
| 830 | Plaquette order in classical spin liquid stabilized by strong off-diagonal exchange | Fan, Zhijie; Saha, Preetha; Zhang, Depei; Chern, Gia-Wei | By introducing a proper order parameter to describe this translational symmetry breaking, we performed extensive Monte Carlo simulations and finite-size analysis to investigate the nature of the plaquette-ordering transition. | Session 67: Honeycomb Lattice and Other Low-D Models |
| 831 | Designing S = 1 Kitaev materials | Catuneanu, Andrei; Stavropoulos, Panagiotis Peter; Pereira, Darren; Kee, Hae-Young | Here we present a microscopic mechanism and necessary ingredients to design the S = 1 Kitaev interaction. | Session 67: Honeycomb Lattice and Other Low-D Models |
| 832 | Dynamical and finite temperature properties of Kitaev magnet beta-Li2IrO3 in magnetic field | LI, Mengqun; Rousochatzakis, Ioannis; Perkins, Natalia | We present theoretical study of the field-induced magnetic phases in the three-dimensional, hyperhoneycomb Kitaev compound beta-Li2IrO3. | Session 67: Honeycomb Lattice and Other Low-D Models |
| 833 | Using light to tune magnetism on the honeycomb lattice | Quito, Victor; Flint, Rebecca | Given the potential deconfined criticality and chiral spin liquid phases on honeycomb lattices, here we address the effects of different Floquet potentials in these lattices. | Session 67: Honeycomb Lattice and Other Low-D Models |
| 834 | Classification of spin liquids on the stuffed honeycomb lattice | Sahoo, Jyotisman; Kochkov, Dmitrii; Clark, Bryan; Flint, Rebecca | We introduce the stuffed honeycomb lattice (a honeycomb lattice coupled to its dual – a triangular lattice) that interpolates between the triangular and the honeycomb lattices. | Session 67: Honeycomb Lattice and Other Low-D Models |
| 835 | Field-induced Spin Liquid-like State in a Magnetic Honeycomb Lattice | Zhong, Ruidan; Cava, Robert | Here, we report a new magnetic honeycomb system, BaCo 2(P 1-xV x) 2O 8, in which the spin correlations can be tuned by the disorder, leading to different magnetic behaviors. | Session 67: Honeycomb Lattice and Other Low-D Models |
| 836 | Ripple state in the frustrated honeycomb-lattice antiferromagnet | Shimokawa, Tokuro; Kawamura, Hikaru | We have found a new type of multiple- q state, a “ripple state” in the J 1- J 2 classical honeycomb-lattice Heisenberg antiferromagnet by means of extensive Monte Carlo simulations. | Session 67: Honeycomb Lattice and Other Low-D Models |
| 837 | AKLT-like valence bond solid state in the frustrated ferromagnetic J1-J2 chain | Agrapidis, Cli� Efthimia; Drechsler, Stefan-L�dwig; Van den Brink, Jeroen; Nishimoto, S. | We consider an elementary frustrated 1D system: the spin-1/2 ferromagnetic ( J 1) Heisenberg chain with next-nearest-neighbor antiferromagnetic (AFM) ( J 2) interactions. | Session 67: Honeycomb Lattice and Other Low-D Models |
| 838 | Critical properties of six-state clock model on randomly frustrated 2D lattices | Surungan, Tasrief | We study the antiferromagnetic six-state clock model on bond-diluted triangular lattice, which is randomly frustrated. | Session 67: Honeycomb Lattice and Other Low-D Models |
| 839 | Landau Velocity for Collective Quantum Hall Breakdown in Bilayer Graphene | Graef, Holger; Yang, Wei; Lu, Xiaobo; Zhang, Guangyu; Taniguchi, Takashi; Watanabe, Kenji; Bachtold, Adrian; Teo, Edwin Hang Tong; Baudin, Emmanuel; Bocquillon, Erwann; F�ve, Gwendal; Berroir, Jean-Marc; Carpentier, David; Goerbig, Mark Oliver; Pla�ais, Bernard | Landau Velocity for Collective Quantum Hall Breakdown in Bilayer Graphene | Session 68: Integer Quantum Hall Effect |
| 840 | Stabilizing a SQUID-based amplifier in high magnetic fields | Shingla, Vidhi; Kleinbaum, Ethan; Pfeiffer, Loren; West, Kenneth; Csathy, Gabor | We present a low noise SQUID-based current amplifier, which is unconditionally stable with a source exposed to magnetic fields up to 10 T. Stability is achieved by inserting a four-pole low-pass filter between the source and the current amplifier. | Session 68: Integer Quantum Hall Effect |
| 841 | Andreev reflection at the interface with an oxide in the quantum Hall regime | Kozuka, Yusuke; Sakaguchi, Atsushi; Falson, Joseph; Tsukazaki, Atsushi; Kawasaki, Masashi | In this study, we propose another material system for investigating 2DES/superconductor junctions, that is ZnO-based heterostrcuture. | Session 68: Integer Quantum Hall Effect |
| 842 | Graphene in a Uniform Magnetic Field | Das, Ankur; Kaul, Ribhu; Murthy, Ganpathy | We study monolayer graphene in a uniform magnetic field in the absence and presence of interactions. | Session 68: Integer Quantum Hall Effect |
| 843 | Edge excitations in the 2D electron gas at ?=2 | Saha, Amartya; Murthy, Ganpathy | In this project we study the collective excitations both in the bulk and the edge at ?=2 using the time dependent hartree fock ( TDHF) method. | Session 68: Integer Quantum Hall Effect |
| 844 | Boundary critical behavior of the integer quantum Hall transition | Puschmann, Martin; Cain, Philipp; Schreiber, Michael; Vojta, Thomas | We recently performed a high-accuracy study of the integer quantum Hall transition for a microscopic model of non-interacting disordered electrons: Based on a recursive Green function approach, we investigated the electronic wave functions in the lowest Landau band of a tight-binding model on a simple square lattice. | Session 68: Integer Quantum Hall Effect |
| 845 | Black Hole Phenomena in Quantum Hall Systems 1: Quasinormal Modes | Subramanyan, Varsha; Hegde, Suraj; Vishveshwara, Smitha; Bradlyn, Barry | We present the results of Gaussian wavepacket scattering to discern these states in the reflected wavepacket. | Session 68: Integer Quantum Hall Effect |
| 846 | Black Hole phenomena in Quantum Hall Systems 2: The Hawking-Unruh effect | Hegde, Suraj; Subramanyan, Varsha; Bradlyn, Barry; Vishveshwara, Smitha | In this talk, we present a parallel between dynamics in quantum Hall systems and the Hawking-Unruh effect associated with black holes. | Session 68: Integer Quantum Hall Effect |
| 847 | Quantum tomography of electrical currents | BISOGNIN, REMI; Roussel, Benjamin; Chapdelaine, Camille; Marguerite, Arthur; Kumar, Manohar; Cabart, Cl?ment; Mohammed-Djafari, Ali; Berroir, Jean-Marc; Bocquillon, Erwann; Pla�ais, Bernard; Cavanna, Antonella; Gennser, Ulf; Jin, Young; Degiovanni, Pascal; F�ve, Gwendal | Combining two-electron Hong-Ou-Mandel interferometry [1] with signal processing techniques, we demonstrate a quantum tomography protocol [2, 3, 4] able of extracting from any electrical current the generated electron and hole wavefunctions as well as their emission probabilities. | Session 68: Integer Quantum Hall Effect |
| 848 | QED-Bloch Theory with Homogeneous Magnetic Fields: Modifications of the Landau Levels and the Hofstadter Butterfly | Rokaj, Vasil; Penz, Markus; Sentef, Michael; Ruggenthaler, Michael; Rubio, Angel | Here we propose a solution to the problem of Bloch electrons in a homogeneous magnetic field by including the quantum fluctuations of the photon field. | Session 68: Integer Quantum Hall Effect |
| 849 | A Topological Sum-Rule Causes the Total Suppression of the Hall Response | Filippone, Michele; Bardyn, Charles-Edouard; Greschner, Sebastian; Giamarchi, Thierry | We present a topological sum-rule for the transverse polarization valid for out-of-equilibrium quantum states in two-dimensional lattices. | Session 68: Integer Quantum Hall Effect |
| 850 | Andreev edge state in the quantum Hall regime | Zhao, Lingfei; Arnault, Ethan; Seredinski, Andrew; Draelos, Anne; Li, Hengming; Fleming, Tate; bell, brandon; Watanabe, Kenji; Taniguchi, Takashi; Amet, Francois; Finkelstein, Gleb | We investigate Andreev reflections in the quantum Hall regime. | Session 68: Integer Quantum Hall Effect |
| 851 | Interacting quantum Hall states at integer filling with a non-Abelian twist: a coupled wire description | Lopes, Pedro; Quito, Victor; Han, Bo; Teo, Jeffrey | We construct a theoretical coupled wire model that describes new many-body interacting quantum Hall states at integer filling. | Session 68: Integer Quantum Hall Effect |
| 852 | Filling-enforced quantum oscillation phase shift anomaly in few-layer graphene | Datta, Biswajit; Adak, Pratap; Shi, Li-kun; Watanabe, Kenji; Taniguchi, Takashi; Song, Justin; Deshmukh, Mandar | We report on unconventional magneto-transport of ABA-trilayer graphene, a multiband system comprising a (non-trivial) gapped monolayer graphene (MLG)-like band, nested within a large (trivial) bilayer graphene (BLG)-like band. | Session 68: Integer Quantum Hall Effect |
| 853 | Taming electronic decoherence in 1D chiral ballistic conductor | Cabart, Clement; Roussel, Benjamin; F�ve, Gwendal; Degiovanni, Pascal | We present a complete study of intrinsic single-electron decoherence within an ideal single-electron channel with long-range effective Coulomb interactions to determine the influence of the material and sample properties [Phys. | Session 68: Integer Quantum Hall Effect |
| 854 | Quantum oscillations in Dirac/Weyl semimetals due to strain and external fields | Pikulin, Dmitry; Ilan, Roni | I will discuss how strain can cause quantum oscillations in Dirac/Weyl semimetals. | Session 69: Interactions and Dynamics in Topological Semimetals |
| 855 | Theory of spin torque in Weyl semimetals with magnetic texture | Kurebayashi, Daichi; Nomura, Kentaro | We theoretically study the spin-transfer torque, a fundamental physical quantity to understand the electrically-induced dynamics of magnetic texture. | Session 69: Interactions and Dynamics in Topological Semimetals |
| 856 | Counting formula for the pseudo Landau levels visible in an energy spectrum | Kariyado, Toshikaze | Here, by considering a simplest situation to have finite pseudo magnetic field, we derive a concise formula to count the number of pseudo Landau levels clearly visible in the energy spectrum. | Session 69: Interactions and Dynamics in Topological Semimetals |
| 857 | Topological semimetal coupled to nano-mechanical resonator | Kim, Kun Woo; Suh, Junho | Here, we propose a way to detect the presence of Dirac node through the coupling to a nano mechanical resonator. | Session 69: Interactions and Dynamics in Topological Semimetals |
| 858 | Dirac cones protected by chiral symmetry in wallpaper groups | Chiu, Ching-Kai; Zhesen, Yang; Le, Congcong | In this talk, we classify the minimal numbers of the Dirac cones protected by chiral symmetry in all 17 wallpaper groups for class AIII, BDI, and DIII. | Session 69: Interactions and Dynamics in Topological Semimetals |
| 859 | Stability of the Semimetallic Phase in strongly interacting Weyl semimetals | Carlstrom, Johan; Bergholtz, Emil | Using a combination of analytical arguments and diagrammatic Monte Carlo simulations, we show that the corrections to the dispersion in interacting Weyl semimetals are determined by the ultraviolet cutoff and the inverse screening length. | Session 69: Interactions and Dynamics in Topological Semimetals |
| 860 | Strain-induced nonlinear spin Hall effect in topological Dirac semimetal | Araki, Yasufumi | In order to overcome this problem, I theoretically propose that an electric field applied to a lattice-strained TDSM gives rise to an additional “nonlinear spin Hall current”, namely the spin current perpendicular to and quadratic in the electric field [1]. | Session 69: Interactions and Dynamics in Topological Semimetals |
| 861 | Enhanced conductance of Weyl semimetals with strain-induced chiral magnetic fields in the ultra-quantum limit | Behrends, Jan; Bardarson, Jens; Ilan, Roni | In this work, we show that the conductivity in the ultra-quantum regime of a disordered Weyl semimetal subjected to a chiral magnetic field in transport direction increases with the field strength and width of the sample. | Session 69: Interactions and Dynamics in Topological Semimetals |
| 862 | Ferromagnetic Weyl semimetal phase and anomalous Hall effect in stacked Kagome lattice | Ozawa, Akihiro; Nomura, Kentaro | In this presentation, we study the electronic state and the transport properties including the anomalous Hall effect by constructing an effective tight binding Hamiltonian. | Session 69: Interactions and Dynamics in Topological Semimetals |
| 863 | “Hinge” surface states in Weyl semimetals | Takahashi, Ryo; Okugawa, Ryo; Murakami, Shuichi | One interesting question here is whether we can define a gapless counterpart of the HOTI, i.e. a “higher-order” topological semimetal. | Session 69: Interactions and Dynamics in Topological Semimetals |
| 864 | Non-local spin-spin coupling in topological semimetals | Verma, Sonu; Giri, Debasmita; Pareek, Keshav; Fertig, Herbert; Kundu, Arijit | We study the spin-spin coupling in finite-geometry topological semimetals employing the RKKY theory of interaction among impurity spins. | Session 69: Interactions and Dynamics in Topological Semimetals |
| 865 | Effects of long-range interactions on topological semimetals | Sur, Shouvik; Goswami, Pallab | Here we study the interplay of long-range interactions and topology in a nodal-point semimetal. | Session 69: Interactions and Dynamics in Topological Semimetals |
| 866 | Impurity-engineered Dirac nodes in three-dimensional topological insulators | Pertsova, Anna; Balatsky, Alexander V. | In this work, we show how doping can be used to engineer Dirac nodes in a 3D TI. | Session 70: Interactions and Dynamics in Topological Systems |
| 867 | Distinct multiple fermionic states in a single topological metal. | Neupane, Madhab; Hosen, Md Mofazzel; Dimitri, Klauss; Nandy, Ashis Kumar; Aperis, Alex; Sankar, Raman; Dhakal, Gyanendra; Maldonado, Pablo; Kabir, Firoza; Sims, Christopher; Chou, Fangcheng; Kaczorowski, Dariusz; Durakiewicz, Tomasz; Oppeneer, Peter | Using angle resolved photoemission spectroscopy (ARPES) and first principles electronic structure calculations, we systematically study the metallic material Hf2Te2P and discover properties, which are unique in a single topological quantum material. | Session 70: Interactions and Dynamics in Topological Systems |
| 868 | Spin valve-like magnetoresistance of a topological insulator in proximity to a perpendicular magnet | Oh, Junseok; Humbert, Vincent; Sklenar, Joseph; Philip, Timothy; Hirsbrunner, Mark; Basa, Bora; Gilbert, Matthew; Mason, Nadya | We report a spin valve-like magnetoresistance switching phenomena when the TI Bi2Se3 is in contact with a Co/Pt multilayer, which has a perpendicular magnetic anisotropy. | Session 70: Interactions and Dynamics in Topological Systems |
| 869 | Observation of Two Magnetically Inequivalent Regions in SmB6 at Low Temperatures | Sonier, Jeff; Akintola, Kolawole; Gheidi, Shayan; Dunsiger, Sarah; Cote, Andre; Saha, Shanta; Paglione, Johnpierre; Fuhrman, Wesley; Broholm, Collin | In an attempt to understand why, we have performed zero-field (ZF) and longitudinal-field (LF) ?SR measurements on the 154Sm 11B 6 and Al-flux grown SmB 6 single crystals. | Session 70: Interactions and Dynamics in Topological Systems |
| 870 | Band structure engineering in short period Bi2Se3/Sb2Te3 superlattices grown by molecular beam epitaxy | Levy, Ido; Garcia, Thor; Deng, Haiming; Alsheimer, Steven; Krusin-Elbaum, Lia; Tamargo, Maria | In this work we explore the use of p-n-p-n short-period superlattices (SLs) to accomplish this goal. | Session 70: Interactions and Dynamics in Topological Systems |
| 871 | Effects of Nitrogen Exposure on the Bismuth Selenide Density of States | Gottschalk, Michael; Lee, Mal-Soon; Mikolas, Camille; Goodwin, Eric; Chasapis, Thomas; Kanatzidis, Mercouri; Mahanti, S; Tessmer, Stuart | We will present density functional theory calculations supporting the picture that nitrogen can bind to the selenium vacancies and shift the density of states. Furthermore, we will present data showing an upper-bound on the level of gas exposure necessary for saturated adsorption. | Session 70: Interactions and Dynamics in Topological Systems |
| 872 | Topology of the Valley-Chern Effect | Qian, Kai; Apigo, David; Prodan, Camelia; Barlas, Yafis; Prodan, Emil | In this talk, we investigate the quantum valley-Hall effect (QVHE) using a versatile experimental platform based on magnetically coupled spinners. | Session 70: Interactions and Dynamics in Topological Systems |
| 873 | Observation of topological edge modes in a quasi-periodic acoustic waveguide | Cheng, Wenting; Apigo, David; dobiszewski, kyle; Prodan, Emil; Prodan, Camelia | We present a system of acoustic waveguide generated by a simple quasi-periodic patterning without any additional fine-tuning. | Session 70: Interactions and Dynamics in Topological Systems |
| 874 | A Proposal to Detect Dark Matter Using Axionic Topological Antiferromagnets | Marsh, David; Fong, Kin; Lentz, Erik; Smejkal, Libor; Ali, Mazhar | Here we demonstrate that using the axion quasiparticle and antiferromagnetic fluctuations in A-TI’s in conjunction with low-noise methods of detecting THz photons presents a viable route to detect axion dark matter with mass 0.7 to 3.5 meV, a range currently inaccessible to all other dark matter detection experiments and proposals. | Session 70: Interactions and Dynamics in Topological Systems |
| 875 | Dzyaloshinskii-Moriya Interaction on Surfaces of Topological Insulator | Andreoli, Domenico; Liu, Chao-Xing; Zang, Jiadong | In this work we theoretically study the THE is realizable in centrosymmetric materials. | Session 70: Interactions and Dynamics in Topological Systems |
| 876 | Valley-Chern Effect with LC-Resonators: A Modular Platform | Eisenberg, Yishai; Barlas, Yafis; Prodan, Emil | After a detailed study of the Berry curvature landscape and of the localization of the interface modes, we derive an optimal configuration of the circuit. | Session 70: Interactions and Dynamics in Topological Systems |
| 877 | LONG RANGE DYNAMICAL COUPLING BETWEEN MAGNETIC ADATOMS MEDIATED BY EDGE STATES IN A 2D TOPOLOGICAL INSULATOR | Costa, Marcio; Buongiorno Nardelli, Marco; Fazzio, Adalberto; Costa, Ant�nio | We study the spin excitation spectra and the dynamical exchange coupling between iron adatoms on a bismuthene nanoribbon. | Session 70: Interactions and Dynamics in Topological Systems |
| 878 | Topological Logical Gates with Meta-Materials | Prodan, Emil; Barlas, Yafis | This talk puts forward several platforms for topological computations with these systems. | Session 70: Interactions and Dynamics in Topological Systems |
| 879 | Interacting Topological Insulators with Synthetic Dimensions | Jian, Chao-Ming; Xu, Cenke | In this work, we study interaction effects on topological insulators with synthetic dimensions. | Session 70: Interactions and Dynamics in Topological Systems |
| 880 | Anomalous Josephson supercurrent in bulk-insulating topological insulator BiSbTeSe2 | Ghatak, Subhamoy; Breunig, Oliver; Yang, Fan; Wang, Zhiwei; Taskin, Alexey; Ando, Yoichi | In this talk, I will discuss about our study on highly gate-tunable topological Josephson junctions made of bulk-insulating TI materials, BiSbTeS 2. | Session 70: Interactions and Dynamics in Topological Systems |
| 881 | First Principles Based Multiscale Atomistic Methods for Non-Equilibrium Transport Across Interfaces | Goddard, William | We will describe the progress in accomplishing these extensions of first-principles-based atomistic simulations to larger scales while dramatically decreasing computational efforts. | Session 71: Interfaces and Mixing – Non-equilibrium Transport Across the Scales |
| 882 | Interface dynamics: New mechanisms of stabilization and destabilization and structure of flow fields | Abarzhi, Snezhana | We briefly review the recent advances and challenges in theoretical and experimental studies, develop the general theoretical framework directly linking the microscopic interfacial transport to the macroscopic flow fields, discover the new mechanisms of interface stabilization and destabilization that have not been discussed before for both inertial and accelerated dynamics, and chart perspectives for future research. | Session 71: Interfaces and Mixing – Non-equilibrium Transport Across the Scales |
| 883 | Nanoscale view of assisted ion transport through the liquid-liquid interface | Schlossman, Mark | We find that trivalent rare earth ions, Y(III) and Er(III), combine with bis(hexadecyl) phosphoric acid (DHDP) extractants to form inverted bilayer structures at the interface; these appear to be condensed phases of small ion�extractant complexes. | Session 71: Interfaces and Mixing – Non-equilibrium Transport Across the Scales |
| 884 | Spiky Electric and Magnetic Field Structures in Flux Rope Experiments | Gekelman, Walter; Tang, Shawn; Vincena, Stephen | Spiky Electric and Magnetic Field Structures in Flux Rope Experiments | Session 71: Interfaces and Mixing – Non-equilibrium Transport Across the Scales |
| 885 | Subdiffusive and superdiffusive transport in plane steady viscous flows | Zaks, Michael; Nepomnyashchy, Alexander | We show that the deterministic transport of particles through lattices of solid bodies or arrays of steady vortices can be anomalous. | Session 71: Interfaces and Mixing – Non-equilibrium Transport Across the Scales |
| 886 | Anomalous Magnetic Torque Signal in a Kitaev Spin Liquid Candidate | Nagarajan, Vikram; Ruiz, Alejandro; Vranas, Mayia; Lopez, Gilbert; McCandless, Gregory; Chan, Julia; Breznay, Nicholas; Kimchi, Itamar; Analytis, James | In this study, we present data on a unique high-temperature phase of lithium iridate as measured by torque magnetometry. | Session 72: Iridates — Honeycomb Lattice and Other Geometries |
| 887 | Magnetic excitation spectra of hyper-honeycomb iridate ?-Li2IrO3 | Ruiz, Ramon; Breznay, Nicholas; Nagarajan, Vikram; Lopez, Gilbert; Analytis, James; Frano, Alex | In this work, we present the magnon excitation spectra of ?-Li 2IrO 3 in zero and finite magnetic field, at zone centers corresponding to both coexisting states. | Session 72: Iridates — Honeycomb Lattice and Other Geometries |
| 888 | Spin-Glass Behavior in Hole-Doped Lithium Iridates | Ruiz, Alejandro; Vranas, Mayia; Frandsen, Benjamin; Acharya, Arani; Nagarajan, Vikram; Lopez, Gilbert; Nair, Nityan; Breznay, Nicholas; Islam, Zahirul; Frano, Alex; Analytis, James | In this work, we report spin-glass behavior in hole-doped Li 2IrO 3 at low substitution levels, indicating the fragility and tunability of the incommensurate order and indicating the strength frustration. | Session 72: Iridates — Honeycomb Lattice and Other Geometries |
| 889 | Kitaev iridates in 3D: magnetic and structural instabilities | Tsirlin, Alexander | Here, I will present recent results on the pressurized hyperhoneycomb iridate ?-Li 2IrO 3 and argue that this compound can be tuned to a classical spin liquid state triggered by the reduction in the nearest-neighbor Kitaev term K and the enhancement of the off-diagonal anisotropy ?. | Session 72: Iridates — Honeycomb Lattice and Other Geometries |
| 890 | NQR investigation of low frequency spin dynamics in Kitaev spin liquid candidate material Cu2IrO3 in zero magntic field | Takahashi, Sean; Wang, Jiaming; Arsenault, Alexandre; Abramchuk, Mykola; Fallah Tafti, Fazel; Singer, Philip; Lee, Sung-Sik; Imai, Takashi | We report 63,65Cu Nuclear Quadrupole Resonance (NQR) investigation of Cu 2IrO 3 in zero external magnetic field [2]. | Session 72: Iridates — Honeycomb Lattice and Other Geometries |
| 891 | NMR investigation of Kitaev spin liquid candidate material Cu2IrO3 | Wang, Jiaming; Takahashi, Sean; Arsenault, Alexandre; Abramchuk, Mykola; Fallah Tafti, Fazel; Singer, Philip; Lee, Sung-Sik; Imai, Takashi | In this talk, we report 63,65Cu high-field Nuclear Magnetic Resonance (NMR) measurements of Cu 2IrO 3 [2]. | Session 72: Iridates — Honeycomb Lattice and Other Geometries |
| 892 | Competition between static and dynamic magnetism in the Kitaev spin liquid material Cu2IrO3. | Kenney, Eric; Segre, Carlo; Lafargue-Dit-Hauret, William; Lebedev, Oleg; Abramchuk, Mykola; Berlie, Adam; Cottrell, Stephen; Simutis, Gediminas; Bahrami, Faranak; Mordvinova, Natalia; McChesney, Jessica; Fabbris, Gilberto; Rocquefelte, Xavier; Graf, Michael; Fallah Tafti, Fazel | Here, we use muon spin relaxation to uncover the magnetic ground state of Cu 2IrO 3. | Session 72: Iridates — Honeycomb Lattice and Other Geometries |
| 893 | Neutron Scattering Study of Kitaev Spin-Liquid Candidate H3LiIr2O6 | Halloran, Thomas; Broholm, Collin; Plumb, Kemp; Takayama, Tomohiro; Takagi, Hidenori | We describe features in neutron scattering which are consistent with those of a KSL. | Session 72: Iridates — Honeycomb Lattice and Other Geometries |
| 894 | Crystal electric field and structural study of Jeff = 1/2 K2IrX6 (X = Cl, Br) | Reig-i-Plessis, Dalmau; Lee, Sangjun; Hozoi, L.; Eldeeb, Mohamed Sabry; Aczel, Adam; Upton, Mary; Clancy, Patric; Ruff, Jacob; Van den Brink, Jeroen; Abbamonte, Peter; MacDougall, Greg | Here we present detailed data on two Iridium halide materials, K 2IrX 6, X = Cl, Br, which have the antifluorite structure and the Ir atom inside separated halide octahedra. | Session 72: Iridates — Honeycomb Lattice and Other Geometries |
| 895 | Multi-scale Quantum Criticality driven by Kondo-lattice Coupling in Pyrochlore Systems | Oh, Hanbit; Moon, Eun-Gook; Kim, Yong-Baek; Lee, Sangjin | Here we investigate emergent quantum phases and their transitions driven by the Kondo-lattice couplings. | Session 72: Iridates — Honeycomb Lattice and Other Geometries |
| 896 | Observing spin fractionalization of the Kitaev spin liquid via temperature evolution of the K-edge RIXS response | Halasz, Gabor; Kourtis, Stefanos; Knolle, Johannes; Perkins, Natalia | Here we propose that the temperature evolution of the fractionalization in the Kitaev honeycomb model can be studied by the resonant inelastic X-ray scattering (RIXS). | Session 72: Iridates — Honeycomb Lattice and Other Geometries |
| 897 | Understanding counter-rotating spiral ordering in three dimensional Kitaev materials | Stavropoulos, Panagiotis Peter; Catuneanu, Andrei; Kee, Hae-Young | We study a minimal 3D model including Kitaev K and a symmetric off-diagonal bond-dependent ? interaction on the hyperhoneycomb lattice by using exact diagonalization (ED). | Session 72: Iridates — Honeycomb Lattice and Other Geometries |
| 898 | Laboratory courses and the professional preparation of physics majors | Zwickl, Benjamin | I will suggest ways in which lab courses can best utilize the unique features of the lab environment to explicitly and visibly support students� professional preparation. | Session 73: Jonathan F. Reichert and Barbara Wolff-Reichert Award for Excellence in Advanced Laboratory Instruction: Incorporating State-of-the-Art Research into Advanced Labs |
| 899 | Open-ended projects in undergraduate lasers and optics courses | Hoyt, Chad | We describe an approach to undergraduate laboratories in two upper-level classes at Bethel University: Optics and Lasers. | Session 73: Jonathan F. Reichert and Barbara Wolff-Reichert Award for Excellence in Advanced Laboratory Instruction: Incorporating State-of-the-Art Research into Advanced Labs |
| 900 | Designing (and re-designing) realistic research practices for undergraduate Advanced Labs | Callori, Sara | Here I will discuss the �state of the lab� and reflect on the strengths and weaknesses of our current course and how this assessment is contributing to a course and curricular re-design. | Session 73: Jonathan F. Reichert and Barbara Wolff-Reichert Award for Excellence in Advanced Laboratory Instruction: Incorporating State-of-the-Art Research into Advanced Labs |
| 901 | Advancing the Advanced Lab: Opportunities and Challenges post-BFYIII | Kozminski, Joseph | This talk will address the recommended outcomes of the laboratory curriculum, things learned at BFY III, and challenges and opportunities for the advanced lab community in fostering the development of critical skills and competencies through authentic and engaging laboratory experiences. | Session 73: Jonathan F. Reichert and Barbara Wolff-Reichert Award for Excellence in Advanced Laboratory Instruction: Incorporating State-of-the-Art Research into Advanced Labs |
| 902 | Jonathan F. Reichert and Barbara Wolff-Reichert Award for Excellence in Advanced Laboratory Instruction Talk: Engaging Students in Authentic Scientific Practices in Physics Lab Courses | Lewandowski, Heather | Our work looks to improve lab experiences by improving students� competency with modeling of physical and measurement systems, troubleshooting skills, documentation practices, and views of the nature of experimental physics. | Session 73: Jonathan F. Reichert and Barbara Wolff-Reichert Award for Excellence in Advanced Laboratory Instruction: Incorporating State-of-the-Art Research into Advanced Labs |
| 903 | NMR Investigation of the Breathing Kagome Lattice in Li2In1-xScxMo3O8 | Verrier, Aim�; El-Amine, Mariam; Bazier-Matte, Xavier; Zhou, Haidong; Sinclair, Ryan; Quilliam, Jeffrey | We report 7Li NMR measurements on Li 2In 1-xSc xMo 3O 8 at concentrations x=0, 0.6 and 1. | Session 74: Kagome Lattices |
| 904 | Thermal transport properties of S = 1/2 Cd-kapellasite | Akazawa, Masatoshi; Doki, Hayato; Sugii, Kaori; Shimozawa, Masaaki; Yamashita, Minoru; Lee, Hyun-Yong; Kawashima, Naoki; Okuma, Ryutaro; Hiroi, Zenji; Han, Jung | In this talk, we report further evidence supporting the agreement between the experiment and theory from thermal Hall measurements in Cd-kapellasite CdCu 3(OH) 6(NO 3) 2 H 2O which has a smaller J/k B ~ 45 K than that of Ca-kapellasite. | Session 74: Kagome Lattices |
| 905 | Structural Phase Transitions in the S=1/2 Kagome Antiferromagnets Barlowite and Claringbullite | Henderson, Alyssa; Dong, Lianyang; Biswas, Sananda; Revell, Hannah; Xin, Yan; Schlueter, John; Valenti, Roser; Siegrist, Theo | Structural Phase Transitions in the S=1/2 Kagome Antiferromagnets Barlowite and Claringbullite | Session 74: Kagome Lattices |
| 906 | Interplay of charge and spin degrees of freedom in Mo3O13 cluster Mott insulators | Akbari-Sharbaf, Arash; Sinclair, Ryan; Verrier, Aim�; Ziat, Djamel; Zhou, Haidong; Sun, Xuefeng; Quilliam, Jeffrey | In this talk I will present recent developments in a new class of highly tunable Mo 3O 13 cluster Mott insulators. | Session 74: Kagome Lattices |
| 907 | Pressure and doping effects on the low-field anomalous magnetism in kagome Co3Sn2S2 | Wu, Hung-Cheng; Sun, Po-Jung; Hsieh, Dong-Jie; Kakarla, D Chandrasekhar; Chu, Ching-Wu; Yang, Hung-Duen | Pressure and doping effects on the low-field anomalous magnetism in kagome Co3Sn2S2 | Session 74: Kagome Lattices |
| 908 | Spin dynamics in the antiferromagnetic Heisenberg model on a pyrochlore slab | Saha, Preetha; Zhang, Depei; Chern, Gia-Wei | We present our study on deterministic spin precession dynamics using energy conserving Landau-Lifshitz equation on a geometrically frustrated magnet. | Session 74: Kagome Lattices |
| 909 | Chiral superconductivity with full Bogoliubov Fermi surface in a doped Kagome spin-liquid state. | Yang, Fan; Jiang, Yifan; Yao, Hong | We propose several new variational states which smoothly connect to the previously studied uniform 0-flux or U(1) $\pi$-flux states. | Session 74: Kagome Lattices |
| 910 | A single-layer infinite projected entangled-pair state study of the chiral antiferromagnetic Heisenberg model on Kagome lattice | Haghshenas, Reza; Sheng, Donna; Gong, Shoushu | In this talk, we present the study of the chiral antiferromagnetic Heisenberg model on Kagome lattice by using the infinite projected entangled-pair state ansatz. | Session 74: Kagome Lattices |
| 911 | Magnetic clustering in frustrated Heisenberg magnets | Mizoguchi, Tomonari; Jaubert, Ludovic; Moessner, Roderich; Udagawa, Masafumi | In this presentation, we present a theory of clustering of spins in a more general framework. | Session 74: Kagome Lattices |
| 912 | Phases of the Chiral-Heisenberg Kagome Antiferromagnet | Pitts, Jackson; Buessen, Finn; Moessner, Roderich; Trebst, Simon; Shtengel, Kirill | We explain this by counting the soft modes of the KCM�s ground states. | Session 74: Kagome Lattices |
| 913 | Temperature dependence of butterfly effect in a classical many-body system | Bilitewski, Thomas; Bhattacharjee, Subhro; Moessner, Roderich | We study the chaotic dynamics in a classical many-body system of interacting spins on the kagome lattice. | Session 74: Kagome Lattices |
| 914 | A mechanism for thermal Hall effect in Mott insulating spin liquid | Gao, Yonghao; Chen, Gang | We study the origin of thermal Hall effect from the spinon transport in a U(1) spinon metal. | Session 74: Kagome Lattices |
| 915 | Gapless Visons and Emergent U(1) Spin Liquid in Kitaev’s Honeycomb Model | Hickey, Ciar�n | Here, we map out the complete phase diagram of the Kitaev model in tilted magnetic fields and report the emergence of a distinct gapless quantum spin liquid at intermediate field strengths. | Session 75: Kitaev Magnetism |
| 916 | Ground State of the Spin-1/2 Honeycomb ? Model: Zigzag Magnetic Order | Liao, Hai-Jun; Huang, RuiZhen; Guo, Yi-Bin; Xie, Zhi-Yuan; Normand, Bruce; Xiang, Tao | By applying two quasi-one-dimensional numerical treatments, the infinite matrix-product-state (iMPS) and DMRG methods, we show that this contrast is a consequence of the system size considered. | Session 75: Kitaev Magnetism |
| 917 | Nonlinear magnetic susceptibility in the Kitaev model | Kamiya, Yoshitomo; Yoshitake, Junki; Kato, Yasuyuki; Nasu, Joji; Motome, Yukitoshi | We study the nonlinear spin susceptibility in the Kitaev model [1]. | Session 75: Kitaev Magnetism |
| 918 | Ground-state phase diagram of the extended Kitaev-Heisenberg model on a honeycomb lattice | Suga, Sei-ichiro; Suzuki, Takafumi; Yamada, Takuto | In this study, we consider the Kitaev-Heisenberg-? model on a honeycomb lattice, where symmetric-anisotropic interactions (?) exist in addition to the Kitaev and Heisenberg interactions. | Session 75: Kitaev Magnetism |
| 919 | Dynamical and Topological Signatures of the Kitaev-Model in a [111] Magnetic Field | Gohlke, Matthias; Moessner, Roderich; Pollmann, Frank | Here, we present results for the Kitaev model coupled to a magnetic field along the [111] axis. | Session 75: Kitaev Magnetism |
| 920 | Field-induced neutral Fermi surface and QCD3 quantum criticalities in Kitaev materials | Zou, Liujun; He, Yin-Chen | We propose that all these exotic quantum phase transitions can be direct and continuous in the Kitaev materials. | Session 75: Kitaev Magnetism |
| 921 | Formation of magnetic order in the Kitaev-Heisenberg model | Zhang, Shang-Shun; Halasz, Gabor; Zhu, Wei; Batista, Cristian | We compute the low-energy excitation spectrum and the dynamical magnetic spin structure factor of the Kitaev-Heisenberg model using a variational approach, that becomes exact at the exactly solvable Kitaev points. | Session 75: Kitaev Magnetism |
| 922 | Quantum phases in spin-1 honeycomb antiferromagnets: application to Ni2Mo3O8 | Li, Shuyi; Loganathan, Vaideesh; Hu, Wenjun; Nevidomskyy, Andriy | In this work, we attempt to explain this spin ordering by the means of mean-field theory and Density Matrix Renormalization Group (DMRG) calculations. | Session 75: Kitaev Magnetism |
| 923 | Nonlocal String Order Parameter in the S=1/2 Kitaev-Heisenberg Ladder | Sorensen, Erik; Kee, Hae-Young; Catuneanu, Andrei | We study the S=1/2 Kitaev-Heisenberg (KJ) model in a two-leg ladder. | Session 75: Kitaev Magnetism |
| 924 | Ground-state phase diagram of the Kitaev-Heisenberg model on a kagome lattice | Morita, Katsuhiro; Kishimoto, Masanori; Tohyama, Takami | The Kitaev-Heisenberg model on the honeycomb lattice has been studied for the purpose of finding exotic states such as quantum spin liquid and topological orders. | Session 75: Kitaev Magnetism |
| 925 | Tricritical Points in the Underscreened Anderson Lattice Model | Riseborough, Peter; Lausmann, Ana; Calegari, Eleonir; Magalhaes, Sergio | We present an analysis of the tricritical point, which shows that the upper critical dimension of the model is reduced to d=3. | Session 76: Kondo and Anderson Lattice Physics |
| 926 | Schwinger boson approach to the Kondo lattice model | Wang, Jiangfan; Chang, Yung-Yeh; Mou, Chung-Yu; Kirchner, Stefan; Buehler-Paschen, Silke; Chung, Chung-Hou | To address this issue, we employ a distinct route from the dynamical mean-field theory by solving the 2D Kondo-Heisenberg model via a dynamical large-N multichannel Schwinger boson approach. | Session 76: Kondo and Anderson Lattice Physics |
| 927 | The splitting of electrons on the Kondo lattice | Quinn, Eoin; Erten, Onur | We demonstrate that strong correlations in Kondo lattice models can be organised around a splitting of the electronic degree of freedom. | Session 76: Kondo and Anderson Lattice Physics |
| 928 | The 4f electron character on core-level spectroscopies of AuCu3-type Ce intermetallics | Sasabe, Norimasa | In this study, we discuss 4 f electron character of AuCu3-type Ce intermetallics by means of X-ray spectra, especially paying attention on the polarization dependence and the incident photon energy. | Session 76: Kondo and Anderson Lattice Physics |
| 929 | Synchrotron-Mossbauer study of the pressure-driven magnetic evolution in EuGa4 | Krishnadas, Anjana; Armstrong, Stephen; Bi, Wenli; Zhao, Jiyong; Alp, Esen; Kobayashi, Riki; Hedo, Masato; Nakama, Takao; Onuki, Yoshichika; Rosenbaum, Thomas; Feng, Yejun | Here, we explore the evolution of antiferromagnetism under pressure via synchrotron-based Mossbauer spectroscopy. | Session 76: Kondo and Anderson Lattice Physics |
| 930 | Order fractionalization and the two channel Kondo lattice | Wugalter, Ari; Komijani, Yashar; Coleman, Piers | Using the large N expansion, we show that the long-wavelength physics of the two-channel Kondo lattice is described by the principle chiral model, in which the skyrmion density of the channel magnetization couples to the difference of the electromagnetic and internal gauge fields. | Session 76: Kondo and Anderson Lattice Physics |
| 931 | Impact of Rashba spin-orbit coupling on f-electron materials | Michishita, Yoshihiro; Peters, Robert | We study the interplay between Rashba spin-orbit coupling (RSOC) and the Kondo screening in noncentrosymmetric f-electron materials. | Session 76: Kondo and Anderson Lattice Physics |
| 932 | Charge and heat transport in a charge 2 channel Kondo device | Fritz, Lars; Van Dalum, Gerwin; Mitchell, Andrew | In this talk we focus on the heat transport in the setup. | Session 76: Kondo and Anderson Lattice Physics |
| 933 | Coupled charge-Kondo quantum dot devices | Mitchell, Andrew | Here we study theoretically a device comprising two charge-Kondo quantum dots, coupled together by a quantum point contact. | Session 76: Kondo and Anderson Lattice Physics |
| 934 | Higher-order Fermi-liquid corrections for thermo-electric transport through an Anderson impurity | Oguri, Akira; Teratani, Yoshimichi | In the present work, we apply a microscopic description that uses the Ward identities [2] to thermo-electric transport of quantum dots and dilute magnetic alloys. | Session 76: Kondo and Anderson Lattice Physics |
| 935 | Tracking incommensurate magnetism with Slave Boson Mean Field Theory | Riegler, David; Klett, Michael; Ok, Seulgi; Neupert, Titus; Woelfle, Peter; Thomale, Ronny | Tracking incommensurate magnetism with Slave Boson Mean Field Theory | Session 76: Kondo and Anderson Lattice Physics |
| 936 | Correlation effects in the emergence of Bound Spin State in the Continuum | Guessi, Luiz H.; Oliveira, Luiz | We consider a Two-Impurity Anderson model. | Session 76: Kondo and Anderson Lattice Physics |
| 937 | Maximally Localized Wannier Orbitals and the Anderson Impurity Model for Twisted Bilayer Graphene | Chen, Xi; Gull, Emanuel; Millis, Andrew | We developed an effective Anderson impurity model to describe the low energy electronic properties of the twisted bilayer graphene. | Session 76: Kondo and Anderson Lattice Physics |
| 938 | Impact of Quenched Disorders on The Holstein Model | Xiao, Bo; Costa, Natanael; Khatami, Ehsan; Batrouni, George; Scalettar, Richard | We focus on the dependence of sizes of domain walls as well as the correlation length of density fluctuations. | Session 76: Kondo and Anderson Lattice Physics |
| 939 | Universal entanglement of typical states in constrained systems | Morampudi, Siddhardh; Chandran, Anushya; Laumann, Christopher | We develop a formalism to exactly evaluate the bipartite entanglement of random states in large Hilbert spaces with local and global constraints. | Session 76: Kondo and Anderson Lattice Physics |
| 940 | Electron-phonon coupling and superconductivity in SrTiO3 | Van Der Marel, Dirk | Here we demonstrate from experimental data that the spectral weight of the TO1 mode is anomalously large, providing a strong indication for the so-called “charged phonon” effect predicted by MJ Rice. | Session 77: Low Carrier Density Superconductors |
| 941 | Low density superconductivity of SrTiO3 bounded by the adiabatic condition | Yoon, Hyeok; Swartz, Adrian; Inoue, Hisashi; Hikita, Yasuyuki; Hwang, Harold | Using this technique, we have examined the superconductivity of bulk doped SrTiO3 across the superconducting dome and found that superconducting state is bounded by the adiabatic condition, maintaining the thermodynamic relationship of BCS weak-coupling theory (2?/kBTc = 3.53). | Session 77: Low Carrier Density Superconductors |
| 942 | Plasmon-Polaron Superconductivity in Strontium Titanate | Edelman, Alexander; Littlewood, Peter | We propose a simple model that extends an Engelsberg-Schrieffer theory of electrons coupled to a single longitudinal optic (LO) phonon mode to self-consistently include the effects of electronic interactions. | Session 77: Low Carrier Density Superconductors |
| 943 | Gate voltage tunable superconductivity in low-carrier-density SrTiO3 | Bretz-Sullivan, Terence; Jiang, J; Suslov, Alexey; PEARSON, JOHN; Martinson, Alex; Bhattacharya, Anand | We demonstrate gate voltage control of the critical current of a surface channel of the low-carrier-density, bulk-superconducting oxide system SrTiO 3. | Session 77: Low Carrier Density Superconductors |
| 944 | Enhancement of the superconducting Tc upon isotopic substitution in Strontium Titanate | Rischau, Willem; Pulmannova, Dorota; Scheerer, Gernot; Giannini, Enrico; Van Der Marel, Dirk | We developed an 18O substitution process to control substitution levels in SrTi( 16O 1-x 18O x) 3 beyond the critical point. | Session 77: Low Carrier Density Superconductors |
| 945 | Pairbreaking Induced by Magnetic Impurity Doping Shrinks the Giant Magnetoresistance Peak of the Cooper Pair Insulator | Valles, James; Zhang, Xue; Joy, James; Wu, Chunshu; Xu, Jimmy | We quench deposited a-Bi films onto nanoporous anodized aluminum oxide substrates and tuned their thickness to produce an insulating state of Cooper pairs. | Session 77: Low Carrier Density Superconductors |
| 946 | Electron-phonon mediated superconductivity in dilute systems | Navarro Gastiasoro, Maria; Chubukov, Andrey; Fernandes, Rafael | Here, we investigate this general issue by studying superconductivity in the Bardeen-Pines model of an electron gas interacting with an optical phonon with frequency ? L, as function of carrier concentration. | Session 77: Low Carrier Density Superconductors |
| 947 | Superconductivity at low carrier density beyond leading order in the coupling constant | Phan, Dan; Chubukov, Andrey | We present results for the onset pairing instability temperature for superconductivity mediated by an Einstein phonon in a 2D electron gas with a parabolic dispersion, in the regime of low carrier density. | Session 77: Low Carrier Density Superconductors |
| 948 | Strain-engineered interaction of quantum polar and superconducting phases | Herrera, Chloe; Cerbin, Jonah; Dunnett, Kirsty; Balatsky, Alexander; Sochnikov, Ilya | We have thus discovered a means to control the interaction of two quantum phases through application of strain, which may be important for quantum information science. | Session 77: Low Carrier Density Superconductors |
| 949 | Superconductivity in semimetals with strong Coulomb repulsion | Tchoumakov, Sergue�; Witczak-Krempa, William | We investigate the superconductivity of compounds with a small carrier density, such as SrTiO3, bismuth and YPtBi. | Session 77: Low Carrier Density Superconductors |
| 950 | A sign of anticorrelation between the orbital related order and the superconductivity in LiTi2O4-? system | Hu, Wei | Therefore, it indicates that the superconductivity is actually strengthened as the oxygen pressure increasing, contrary to the effect of the oxygen pressure on the orbital related order. | Session 77: Low Carrier Density Superconductors |
| 951 | Unconventional full-gap superconductivity in Kondo lattice with semi-metallic conduction bands | Iimura, Shoma; Hirayama, Motoaki; Hoshino, Shintaro | Here we theoretically study the Kondo lattice with semi-metallic conduction bands, and propose the mechanism for full-gap superconductivity in f-electron systems. | Session 77: Low Carrier Density Superconductors |
| 952 | Dynamical effects on BCS-BEC crossover in the Holstein model | Park, Tae-Ho; Choi, Han-Yong | We present a study of the half-filled Holstein model with superconducting order employing the dynamical mean-field theory in combination with the numerical renormalization group. | Session 77: Low Carrier Density Superconductors |
| 953 | Intermolecular Coupling and Superconductivity in Chevrel Phase Compounds | Chen, Jia; Millis, Andrew; Reichman, David | To understand superconductivity in Chevrel phase compounds and guide the search for interesting properties in materials created with Chevrel phase molecules as building blocks, we use ab-initio methods to study the properties of single Mo6X8 molecules with X=S, Se, Te as well as the bulk solid PbMo6S8. | Session 77: Low Carrier Density Superconductors |
| 954 | Nanocalorimetric Evidence for Nematic Superconductivity in Sr0.1Bi2Se3 | Willa, Kristin; Willa, Roland; Song, Kok Wee; Gu, Genda; Zhong, Ruidan; Schneeloch, John; Koshelev, Alexei; Kwok, Wai-Kwong; Welp, Ulrich | A quantitative analysis of our data excludes more conventional sources of this two-fold anisotropy and provides the first estimate for the symmetry-breaking strength ? ~ 0.1. | Session 78: Lower Temperature Superconductors |
| 955 | ?SR and Magnetometry Study of the Type I Superconductor BeAu | Beare, James; Nugent, Matthew; Wilson, Murray; Svanidze, Eteri; Cai, Yipeng; Amon, Alfred; Leithe-Jasper, Andreas; Gong, Zizhou; Guguchia, Zurab; Grin, Yuri; Uemura, Yasutomo; Luke, Graeme | We present Muon Spin Rotation and Relaxation (?SR) measurements as well as demagnetisation corrected magnetometry measurements on polycrystalline samples of the noncentrosymmetric superconductor BeAu. | Session 78: Lower Temperature Superconductors |
| 956 | Direct evidence of multi-band superconductivity in Mo8Ga41 | Sirohi, Anshu; Saha, Surabhi; Neha, Prakriti; Das, Shekhar; Patnaik, Satyabrata; Das, Tanmoy; Sheet, Goutam | In this talk, from the direct measurement of the superconducting energy gap measured by Scanning Tunneling Spectroscopy (STS), I will show that Mo 8Ga 41 is a two-gap superconductor like MgB 2 with the superconducting energy gaps of magnitude 0.85 meV and 1.6 meV respectively. | Session 78: Lower Temperature Superconductors |
| 957 | Evidence of a structural quantum critical point in (CaxSr1-x)3Rh4Sn13 from a lattice dynamics study | Cheung, Yiu Wing; Hu, Yajian; Imai, Masaki; Tanioku, Yasuaki; Kanagawa, Hibiki; Murakawa, Joichi; Moriyama, Kodai; Zhang, Wei; Lai, Kwing To; Yoshimura, Kazuyoshi; Grosche, Malte; Kaneko, Koji; Tsutsui, Satoshi; Goh, Swee Kuan | We detected a complete phonon softening at the M point when approaching the structural transition temperature from above. | Session 78: Lower Temperature Superconductors |
| 958 | Singlet superconductivity in single-crystal NiBi3 superconductor | Zhao, Gejian; Gong, Xinxin; Xu, Pengchao; Li, Bochao; Huang, Zhiyu; Jin, Xiaofeng; Zhu, Xiang-de; Chen, Tingyong | In this work, Andreev reflection spectroscopy with unpolarized and highly spin-polarized currents has been utilized to study an intermetallic single-crystal SC NiBi 3. | Session 78: Lower Temperature Superconductors |
| 959 | Magnesium Diboride Thin Film Cavity Fabricated by Hybrid Physical Chemical Vapor Deposition | Guo, Xin; Withanage, Wenura; Paudel, Jay; Nassiri, Alireza; Xi, Xiaoxing | Using the hybrid physical chemical vapor deposition (HPCVD) technique, a uniform MgB 2 coatings were achieved on the inner wall of the 3 GHz Cu cavity. | Session 78: Lower Temperature Superconductors |
| 960 | The extraordinary superconductivity of commercial niobium-titanium wire at extreme pressures | Sun, Liling; Guo, Jing; Lin, Gongchang; Cai, Shu; Xi, Chuanying; Zhang, Changjin; Sun, Wanshuo; Wang, Qiuliang; Wu, Qi; Zhang, Yuheng; Xiang, Tao; Cava, Robert | We report the observation of extraordinary superconductivity in a pressurized commercial niobium-titanium alloy wire. | Session 78: Lower Temperature Superconductors |
| 961 | Field-induced large resistance peak in superconducting niobium thin films deposited on surface reconstructed SrTiO3 substrate | Singh, Akhilesh; Wu, Tsung-Chi; Kar, Uddipta; Lee, Wei-Cheng; Lee, Wei-Li | In this work, we constructed a phase diagram of SR-STO with surface structures of, where SR-STO samples were prepared via thermal annealing in ultra-high vacuum followed by low energy electron diffraction analysis. | Session 78: Lower Temperature Superconductors |
| 962 | Effects of dimensionality and magnetic correlations on superconducting properties of MoCo thin films | Polakovic, Tomas; Bretz-Sullivan, Terence; PEARSON, JOHN; Jiang, J; Bhattacharya, Anand; Hoffmann, Axel; Karapetrov, Goran; Novosad, Valentyn | We present a systematic study of the effect of Co dopant on superconducting Molybdenum thin films prepared by sputtering from alloyed targets over a broad range of impurity concentrations and film thicknesses. | Session 78: Lower Temperature Superconductors |
| 963 | Carrier and epitaxial strain control of superconductivity in LaO thin film | Kaminaga, Kenichi; Oka, Daichi; Hasegawa, Tetsuya; Fukumura, Tomoteru | We report effects of carrier density and epitaxial strain on superconductivity in rock-salt lanthanum monoxide (LaO) epitaxial thin film [1]. | Session 78: Lower Temperature Superconductors |
| 964 | Evidence for the Berezinskii�Kosterlitz�Thouless transition in an Al nanofilm grown by molecular beam epitaxy | Liang, Chi-Te; Su, Guan-Ming; Kumar, Ankit; Chang, Chau-Shing; Yeh, Ching-Chen; Wu, Bi-Yi; Patel, Dinesh; Fan, Yen-Ting; Lin, Sheng-Di; Chow, Lee | In this work, we present experimental evidence for the Berezinskii�Kosterlitz�Thouless (BKT) transition in an atomic-scale aluminum nanofilm grown on a GaAs substrate by molecular beam epitaxy (MBE). | Session 78: Lower Temperature Superconductors |
| 965 | London penetration depth in Half- Heusler YPdBi and TbPdBi compounds | Martin, Catalin; RADMANESH, Ali; Zhu, Yanglin; Mao, Zhiqiang; Spinu, Leonard | We found that penetration depths of both compounds do not show exponential temperature dependence and saturation at low temperatures, as expected for conventional BCS superconductors. | Session 78: Lower Temperature Superconductors |
| 966 | Effect of magnetic field on short-range antiferromagnetic correlations in the filled skutterudite Pr1-xEuxPt4Ge12 | Adhikari, Ram; Shen, Pengtao; Kunwar, Dom; Jeon, Inho; Maple, M Brian; Dzero, Maxim; Almasan, Carmen | We have investigated the effects of Eu substitution through thermodynamic measurements on the superconducting filled skutterudite Pr 1-xEu xPt 4Ge 12 in an applied magnetic field H. | Session 78: Lower Temperature Superconductors |
| 967 | Increase in Birr and reduction of anisotropy of MgB2 with Dy2O3/C co-doping | Sumption, Mike | In this study a series of Dy 2O 3/C co-doped MgB 2 bulks and strands were fabricated. | Session 78: Lower Temperature Superconductors |
| 968 | Superconductivity and phase diagram in a transition metal doped Zr5Ge3 compound | Liu, Xiaoyuan; Li, Sheng; Anand, Varun; Lv, Bing | Superconductivity and phase diagram in a transition metal doped Zr5Ge3 compound | Session 78: Lower Temperature Superconductors |
| 969 | Unsupervised machine learning of single crystal x-ray diffraction data | Venderley, Jordan; Matty, Michael; Kim, Eun-Ah | Here we discuss an unsupervised machine learning approach to studying phase transitions in single crystal x-ray diffraction data. | Session 79: Machine Learning Material and Experimental Data |
| 970 | X-ray hyperspectral classification of the metal-insulator transition in NdNiO3 | Zheng, William; McLeod, Alexander; Post, Kirk; Hepting, Matthias; Bluschke, Martin; Minola, Matteo; Boris, Alexander; Benckiser, Eva; Chopdekar, Rajesh; Scholl, Andreas; Keimer, Bernhard; Basov, Dimitri | In this work we apply X-PEEM to image cooling and heating MITs and develop machine learning based analysis techniques, mainly Principle Component Analysis (PCA) and Independent Component Analysis (ICA) with k-means classification, to classify thermally evolving metallic and insulating domains. | Session 79: Machine Learning Material and Experimental Data |
| 971 | Classifying Grazing Incidence X-ray Scattering Patterns via Convolutional Neural Networks | Melton, Charles; Liu, Shuai; Hexemer, Alexander; Ushizima, Daniela | We propose a computational scheme that learns the structure of well-defined layers of nanoparticles from GISAXS patterns. | Session 79: Machine Learning Material and Experimental Data |
| 972 | Deep learning X-ray Absorption Near Edge Spectra | Li, Liang; Chan, Maria | In this work, computed spectra using a Bethe-Salpeter Equation-based approach, of transition metal oxides, are used as the training set. | Session 79: Machine Learning Material and Experimental Data |
| 973 | Using machine learning to predict local chemical environments from X-ray absorption spectra | Lu, Deyu; Carbone, Matthew; Topsakal, Mehmet; Yoo, Shinjae | In this study, we present a machine learning-based approach to classify the LCE’s of eight 3d transition metal families from the simulated K-edge XANES of a large number of compounds. | Session 79: Machine Learning Material and Experimental Data |
| 974 | Machine Learning Approach for the Discovery of Enhanced Magnetocaloric Effect in Single Molecule Magnets | Holleis, Ludwig; Shivaram, Bellave; Balachandran, Prasanna | We train machine learning models to predict the entropy change. We construct a database from surveying the published literature on magnetocaloric effect in SMM and develop a representation scheme that include aspects related to dimensionality, structure, local coordination environment, ideal number of spins of magnetic ions, ligands, and linking chemistry. | Session 79: Machine Learning Material and Experimental Data |
| 975 | A Classifier for Metal-Insulator Transitions | Wagner, Nicholas; Rondinelli, James | Our model achieves a cross-validation AUC score of 88.24 +/- 11.63 and a mean accuracy of 79.23 +/- 9.23%. We have assembled the largest dataset of resistivity-temperature measurements on temperature-activated metal-insulator transitions (MITs) to date (45 unique compounds). | Session 79: Machine Learning Material and Experimental Data |
| 976 | Machine-learning model to predict adsorption energies in thiolated bimetallic nanoclusters | Panapitiya, Gihan; Frano, Guillermo; Lewis, James | We developed a random forest based machine learning model to predict adsorption energies in Ag-alloyed thiolated gold nanoclusters. | Session 79: Machine Learning Material and Experimental Data |
| 977 | Model Selection Based on Bayesian Inference that Uncovers Fundamental Dynamics of Desiccation Crack Patterns | Ito, Shin-ichi; Nakahara, Akio; Yukawa, Satoshi | In order to explain this dynamic transition theoretically, we construct a statistical model based on an elastic theory that describes the dynamics of the shrinkage of the colloidal suspension owing to the desiccation. | Session 79: Machine Learning Material and Experimental Data |
| 978 | A machine-learning approach to magnetic neutron scattering | Twyman, Robert; Gibson, Stuart; Molony, James; Quintanilla, Jorge | Here we propose an unbiased approach that can be used before a model has been formulated. | Session 79: Machine Learning Material and Experimental Data |
| 979 | Identifying quantum phase transitions using artificial neural networks on experimental data | Weitenberg, Christof | Here we employ an artificial neural network and deep learning techniques to identify quantum phase transitions from single-shot experimental momentum-space density images of ultracold quantum gases and obtain results, which were not feasible with conventional methods. | Session 79: Machine Learning Material and Experimental Data |
| 980 | Classifying Snapshots of the Doped Hubbard Model with Machine Learning | Bohrdt, Annabelle; Chiu, Christie; Ji, Geoffrey; Xu, Muqing; Greif, Daniel; Greiner, Markus; Demler, Eugene; Grusdt, Fabian; Knap, Michael | We implement machine learning to analyze and classify such snapshots of ultracold atoms, which realize the Fermi-Hubbard model on a square lattice. | Session 79: Machine Learning Material and Experimental Data |
| 981 | Detecting nematic order in STM/STS data with artificial intelligence | Goetz, Jeremy; Zhang, Yi; Lawler, Michael | We train the artificial neural networks to classify simulated data of isotropic and anisotropic two-dimensional metals in the presence of disorder. | Session 79: Machine Learning Material and Experimental Data |
| 982 | Revealing Patterns in Scanning Probe Microscopy Data via Machine Learning Techniques | Hudson, Eric; Banerjee, Riju; Pabbi, Lavish; Binion, Anna; Crust, Kevin; Dusch, William | Here we present results of ML techniques applied to both topographic and spectroscopic STM data, demonstrating the power of these techniques to reveal previously hidden connections between the two and hence help improve our understanding of the relationship between structure and electronic properties at the atomic scale. | Session 79: Machine Learning Material and Experimental Data |
| 983 | Crystal Structure Prediction by Bayesian Optimization and Evolutionary Algorithm | Yamashita, Tomoki; Kanehira, Shinichi; Sato, Nobuya; Kino, Hiori; Tsuda, Koji; Miyake, Takashi; Oguchi, Tamio | Previously we have developed a searching algorithm accelerated by Bayesian optimization (BO). | Session 79: Machine Learning Material and Experimental Data |
| 984 | Phonon Calculations of Phase Change Materials Using Machine-Learning Methods | Choi, Youngjae; Yang, Wooil; Jhi, Seung-Hoon | In this study, we used the ML methods to calculate the PES and phonon modes of phase change materials and carried out the transferability analysis by controlling the training sets and force errors. | Session 79: Machine Learning Material and Experimental Data |
| 985 | Developing computationally efficient potential models by genetic programming | Hernandez, Alberto; Balasubramanian, Adarsh; Yuan, Fenglin; Mueller, Tim | We present our approach, the forms of the discovered models, and assessments of their transferability, accuracy and speed. | Session 79: Machine Learning Material and Experimental Data |
| 986 | ICA method for identifying collective modes | Wu, Yadong; Zhai, Hui | We present this model-independent method to identify the collective modes which are mixed together in a Bese-Einstein condensate from large sets of images. | Session 79: Machine Learning Material and Experimental Data |
| 987 | “Perfect crime” of machine-learning potentials: 100-fold speed-up with no detectable trace of using machine learning in the final result | Gubaev, Konstantin; Podryabinkin, Evgeny; Hart, Gus; Shapeev, Alexander | For the application of obtaining thermodynamically stable ternary alloy structures I will present an algorithm for screening out high-energy structures, thus accelerating a baseline DFT-based high-throughput algorithm by a factor of 100, leaving zero error in the final answer when compared to DFT. | Session 79: Machine Learning Material and Experimental Data |
| 988 | Deep Learning of Lennard-Jones Potential Parameterization | Moradzadeh, Alireza; Aluru, N. | In this study, a deep neural network is developed to parameterize van der Waals interactions at various thermodynamic states based on the pair-correlation functions obtained through MD simulation of about 52 ?s. | Session 79: Machine Learning Material and Experimental Data |
| 989 | A direct and local deep learning model for atomic forces in solids | Kuritz, Natalia; Gordon, Goren; Natan, Amir | We apply this model for bulk aluminum, silicon and sodium and show that the model errors are comparable to other state of the art algorithms. | Session 79: Machine Learning Material and Experimental Data |
| 990 | Machine Learning Correlates CDW Properties with Local Gap in Cuprates | Hausknecht, Kaylie; Webb, Tatiana; Boyer, Michael; Yin, Yi; Kondo, Takeshi; Takeuchi, Tsunehiro; Ikuta, Hiroshi; Hudson, Eric; Hoffman, Jennifer | Here, we use ML to test correlation hypotheses between spatially resolved measurements of disordered materials to overcome the limitations of standard Fourier analysis techniques. | Session 79: Machine Learning Material and Experimental Data |