Now showing items 1-12 of 12

    • Ab initiotight-binding Hamiltonian for transition metal dichalcogenides 

      Fang, Shiang; Kuate Defo, Rodrick; Shirodkar, Sharmila N.; Lieu, Simon; Tritsaris, Georgios; Kaxiras, Efthimios (American Physical Society (APS), 2015)
      We present an accurate ab initio tight-binding Hamiltonian for the transition metal dichalcogenides, MoS2, MoSe2, WS2, WSe2, with a minimal basis (the d orbitals for the metal atoms and p orbitals for the chalcogen atoms) ...
    • Bounds on nanoscale nematicity in single-layerFeSe/SrTiO3 

      Huang, Dennis; Webb, Tatiana A.; Fang, Shiang; Song, Can-Li; Chang, Cui-Zu; Moodera, Jagadeesh S.; Kaxiras, Efthimios; Hoffman, Jennifer Eve (American Physical Society (APS), 2016)
      We use scanning tunneling microscopy (STM) and quasiparticle interference (QPI) imaging to investigate the low-energy orbital texture of single-layer FeSe/SrTiO3. We develop a T -matrix model of multiorbital QPI to disentangle ...
    • Dirac Fermions and Flat Bands in the Ideal Kagome Metal FeSn 

      Fang, Shiang; Han, Minyong; Graff, David; Kaxiras, Efthimios; Kang, Mingu; Ye, Linda; You, Jhih-Shih; Levitan, Abe; Facio, Jorge; Jozwiak, Chris; Bostwick, Aaron; Rotenberg, Eli; Chan, Mun; McDonald, Ross; Kaznatcheev, Konstantine; Vescovo, Elio; Bell, David; van den Brink, Jeroen; Richter, Manuel; Prasad Ghimire, Madhav; Checkelsky, Joseph; Comin, Riccardo (Springer Science and Business Media LLC, 2019-12-09)
      A kagome lattice of 3d transition metal ions is a versatile platform for correlated topological phases hosting symmetry-protected electronic excitations and magnetic ground states. However, the paradigmatic states of the ...
    • Enhancement of Interlayer Exchange in an Ultrathin Two-Dimensional Magnet 

      Klein, Dahlia; MacNeill, David; Song, Qian; Larson, Daniel; Fang, Shiang; Xu, Mingyu; Ribeiro, R. A.; Canfield, P. C.; Kaxiras, Efthimios; Comin, Riccardo; Jarillo-Herrero, Pablo (Springer Science and Business Media LLC, 2019-09-16)
      Following the recent isolation of monolayer CrI3 [1], there has been a surge of new two-dimensional van der Waals magnetic materials [2-12], whose incorporation in van der Waals heterostructures offers a new platform for ...
    • Enhancement of Interlayer Exchange in an Ultrathin Two-Dimensional Magnet 

      Song, Qian; Fang, Shiang; Xu, Mingyu; Ribeiro, R. A.; Canfield, P. C.; Kaxiras, Efthimios; Comin, Riccardo; Jarillo-Herrero, Pablo; Klein, Dahlia; MacNeill, David; Larson, Daniel; Canfield, P; Comin, Riccardo (Springer Science and Business Media LLC, 2019-09-16)
      Following the recent isolation of monolayer CrI3, many more two-dimensional van der Waals magnetic materials have been isolated. Their incorporation in van der Waals heterostructures offers a new platform for spintronics ...
    • Magnetic resonance spectroscopy of an atomically thin material using a single-spin qubit 

      Lovchinsky, Igor; Lukin, Mikhail D.; Sanchez-Yamagishi, Javier; Urbach, Elana Kahn; Choi, Soonwon; Fang, Shiang; Andersen, Trond Ikdahl; Watanabe, Kenji; Taniguchi, Takashi; Bylinskii, Alexei; Kaxiras, Efthimios; Kim, Philip; Park, Hongkun (American Association for the Advancement of Science (AAAS), 2017)
      Two-dimensional (2D) materials offer a promising platform for exploring condensed matter phenomena and developing technological applications. However, the reduction of material dimensions to the atomic scale poses a challenge ...
    • Microscopic structure of three-dimensional charge order in kagome superconductor AV3Sb5 and its tunability 

      Kang, Mingu; Fang, Shiang; Yoo, Jonggyu; Ortiz, Brenden R.; Oey, Yuzki M.; Choi, Jonghyeok; Ryu, Sae Hee; Kim, Jimin; Jozwiak, Chris; Bostwick, Aaron; Rotenberg, Eli; Kaxiras, Efthimios; Checkelsky, Joseph G.; Wilson, Stephen D.; Park, Jae-Hoon; Comin, Riccardo (Research Square Platform LLC, 2022-02-24)
      Correlated electronic systems are naturally susceptible to develop collective, symmetry-breaking electronic phases as observed in Cu- and Fe-based high-temperature superconductors, and twisted Moiré superlattices. The ...
    • Observation of Interband Collective Excitations in Twisted Bilayer Graphene 

      Hesp, Niels C. H.; Torre, Iacopo; Rodan Legrain, Daniel; Novelli, Pietro; Cao, Yuan; Carr, Stephen; Fang, Shiang; Stepanov, Petr; Barcons-Ruiz, David; Herzig Sheinfux, Hanan; Watanabe, Kenji; Taniguchi, Takashi; Efetov, Dmitri K.; Kaxiras, Efthimios; Jarillo-Herrero, Pablo; Polini, Marco; Koppens, Frank H. L. (Springer Science and Business Media LLC, 2021-09-27)
      The single-particle and many-body properties of twisted bilayer graphene (TBG) can be dramatically 1 different from those of a single graphene layer, in particular when the two layers are rotated relative 2 to each other ...
    • Observation of the nonlinear Hall effect under time-reversal-symmetric conditions 

      Ma, Qiong; Xu, Su-Yang; Shen, Huitao; MacNeill, David; Fatemi, Valla; Chang, Tay-Rong; Mier Valdivia, Andrés M.; Wu, Sanfeng; Du, Zongzheng; Hsu, Chuang-Han; Fang, Shiang; Gibson, Quinn D.; Watanabe, Kenji; Taniguchi, Takashi; Cava, Robert J.; Kaxiras, Efthimios; Lu, Hai-Zhou; Lin, Hsin; Fu, Liang; Gedik, Nuh; Jarillo-Herrero, Pablo (Springer Nature, 2018-12-17)
    • Revealing the Empty-State Electronic Structure of Single-Unit-Cell FeSe/SrTiO3 

      Huang, Dennis; Song, Can-Li; Webb, Tatiana A.; Fang, Shiang; Chang, Cui-Zu; Moodera, Jagadeesh S.; Kaxiras, Efthimios; Hoffman, Jennifer Eve (American Physical Society (APS), 2015)
      We use scanning tunneling spectroscopy to investigate the filled and empty electronic states of superconducting single-unit-cell FeSe deposited on SrTiO3(001). We map the momentum-space band structure by combining quasiparticle ...
    • Theory of Graphene Raman Scattering 

      Heller, Eric J.; Yang, Yuan; Kocia, Lucas; Chen, Wei; Fang, Shiang; Borunda, Mario; Kaxiras, Efthimios (American Chemical Society (ACS), 2016)
      Raman scattering plays a key role in unraveling the quantum dynamics of graphene, perhaps the most promising material of recent times. It is crucial to correctly interpret the meaning of the spectra. It is therefore very ...
    • Twofold Van Hove Singularity and Origin of Charge Order in Topological Kagome Superconductor CsV3Sb5 

      Kang, Mingu; Fang, Shiang; Kim, Jeong-Kyu; Ortiz, Brenden R.; Ryu, Sae Hee; Kim, Jimin; Yoo, Jonggyu; Sangiovanni, Giorgio; Di Sante, Domenico; Park, Byeong-Gyu; Jozwiak, Chris; Bostwick, Aaron; Rotenberg, Eli; Kaxiras, Efthimios; Wilson, Stephen D.; Park, Jae-Hoon; Comin, Riccardo (Springer Science and Business Media LLC, 2022-01-13)