Local Probe Studies of the Orbital Texture of a Single-Layer Mott Insulator

ORAL

Abstract

Mott insulators are insulating phases induced by strong electron correlation that can lead to exotic states such as high-temperature superconductivity and quantum spin liquids. Recent advances in van der Waals material synthesis enable the exploration of novel Mott systems in the two-dimensional limit. Here we present the characterization of the single-layer Mott insulator 1T-TaSe2 via energy-, spatial-, and momentum-resolved measurement of its electronic structure by scanning tunneling microscopy/spectroscopy and angle-resolved photoemission spectroscopy. Our study establishes single-layer 1T-TaSe2 as a novel Mott insulator, thus providing an ideal experimental platform for investigating strong correlation physics in two-dimensional materials.

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Presenters

  • Yi Chen

    University of California, Berkeley

Authors

  • Yi Chen

    University of California, Berkeley

  • Wei Ruan

    University of California, Berkeley

  • Meng Wu

    University of California, Berkeley, Department of Physics, University of California at Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory

  • Shujie Tang

    ALS, Lawrence Berkeley National Laboratory, Lawrance Berkeley National Laboratory, Stanford University, SIMES, Stanford University, Advanced Light Source, Lawrence Berkeley National Laboratory

  • Hyejin Ryu

    Lawrence Berkeley National Laboratory, Lawrance Berkeley National Laboratory, Lawrence Berkeley Nat. Lab

  • Hsin-Zon Tsai

    University of California, Berkeley, UC Berkeley

  • Ryan Lee

    University of California, Berkeley

  • Salman Abdul Gaffar Kahn

    University of California, Berkeley

  • Franklin Liou

    University of California, Berkeley

  • Caihong Jia

    University of California, Berkeley

  • Oliver R Albertini

    Georgetown University

  • Hongyu Xiong

    Stanford University

  • Tao Jia

    Stanford University, GLAM, Stanford University

  • Zhi Liu

    Chinese Academy of Sciences, Shanghai Institute of Microsystem and Information Technology, Shanghai Institute of Microsystem and Information Technology

  • Jonathan Sobota

    Stanford University, Department of Applied Physics, Stanford University, SLAC National Accelerator Laboratory

  • Amy Liu

    Georgetown University

  • Joel Moore

    University of California, Berkeley, Department of Physics, University of California, Berkeley, California 94720, USA, University of California, Berkeley and Lawrence Berkeley National Laboratory, Physics, University of California, Berkeley, University of California, Berkeley, and Lawrence Berkeley National Laboratory

  • Zhi-Xun Shen

    Stanford University, SLAC National Accelerator Laboratory

  • Steven G. Louie

    Physics, UC Berkeley, University of California, Berkeley, Department of Physics, University of California, Berkeley, Physics Department, UC Berkeley and Lawrence Berkeley National Lab, Department of Physics, University of California at Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory, Physics, University of California at Berkeley, University of California at Berkeley and Lawrence Berkeley National Lab, University of California at Berkeley and Lawrence Berkeley National Laboratory, Physics, University of California, Berkeley, UC Berkeley and Lawrence Berkeley National Lab, Physics, University of California - Berkeley, Physics and Materials Sciences, University of California at Berkeley and Lawrence Berkeley National Laboratory, Lawrence Berkeley National Lab and University of California, Berkeley, University of California - Berkeley, Lawrence Berkeley National Laboratory

  • Sung-Kwan Mo

    ALS, Lawrence Berkeley National Laboratory, Lawrance Berkeley National Laboratory, Lawrence Berkeley Nat. Lab, Advanced Light Source, Lawrence Berkeley National Laboratory

  • Michael F Crommie

    Physics, UC Berkeley, University of California, Berkeley, Lawrence Berkeley National Laboratory and UC Berkeley, Department of Physics, University of California at Berkeley, Physics, University of California - Berkeley