Quantum Spin Hall State in Monolayer 1T'-WTe<sub>2</sub>

ORAL

Abstract

Using molecular beam epitaxy (MBE), we successfully synthesized monolayer 1T’-WTe2 on graphitized SiC substrate. High-resolution angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling spectroscopy (STS) measurement are performed to investigate the electronic structure of monolayer 1T’-WTe2. Together with theoretical calculation and ARPES measurement, the band inversion which alters the band topology has been confirmed. The bulk gap opening due to the strong spin orbital coupling is clearly observed by ARPES and STS measurement. STS further provides evidences for a robust and modified electronic structure near the edge that is consistent with the expectations for a quantum spin Hall insulator.

–

Presenters

  • Shujie Tang

    • Stanford University
    • Lawrence Berkeley National Laboratory
    • SIMIS, Stanford University

Authors

  • Shujie Tang

    • Stanford University
    • Lawrence Berkeley National Laboratory
    • SIMIS, Stanford University

  • Chaofan Zhang

    • SIMIS, Stanford University
    • Stanford University

  • Chunjing Jia

    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • SLAC National Accelerator Laboratory
    • SIMIS, Stanford University
    • SLAC - Natl Accelerator Lab
    • Stanford University
    • Stanford Univ

  • Brian Moritz

    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • SLAC - Natl Accelerator Lab
    • SLAC and Stanford University
    • SLAC National Accelerator Laboratory
    • Stanford Institute for Materials and Energy Sciences, SLAC National Laboratory
    • SIMIS, Stanford University
    • Physics, Stanford University
    • Stanford Univ
    • SIMES, SLAC and Stanford University

  • hao yan

    • SIMIS, Stanford University

  • Thomas Devereaux

    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • Stanford Univ
    • SLAC and Stanford University
    • SLAC National Accelerator Laboratory
    • SLAC - Natl Accelerator Lab
    • Stanford Institute for Materials and Energy Sciences, SLAC National Laboratory
    • Stanford University
    • SIMIS, Stanford University
    • Physics, Stanford University
    • SLAC National Lab and Stanford University
    • SIMES, SLAC and Stanford University

  • Zhi-Xun Shen

    • Stanford University
    • SLAC National Accelerator Laboratory
    • SLAC - Natl Accelerator Lab
    • Stanford Univ
    • SIMIS, Stanford University
    • Applied Physics, Stanford Univ
    • Stanford University and SLAC National Accelerator Laboratory
    • Applied Physics, Stanford University

  • Dillon Wong

    • Princeton University
    • Joseph Henry Laboratories & Department of Physics, Princeton University
    • UCB
    • Physics, Princeton University
    • Univ of California - Berkeley

  • Zahra Pedramrazi

    • UCB
    • Univ of California - Berkeley

  • Hsin-Zon Tsai

    • Physics, Univ of California - Berkeley
    • Univ of California - Berkeley
    • UCB
    • Physics, UC Berkeley
    • Physics, University of California, Berkeley
    • Department of physics, University of California - Berkeley

  • Salman Kahn

    • Univ of California - Berkeley
    • UCB
    • Physics, University of California, Berkeley

  • Michael Crommie

    • Physics, Univ of California - Berkeley
    • UC Berkeley and LBNL
    • Univ of California - Berkeley
    • UCB
    • Physics, UC Berkeley
    • Physics, University of California, Berkeley
    • Department of physics, University of California - Berkeley
    • Physics, University of California - Berkeley

  • Juan Jiang

    • Oxford Unv.
    • Lawrence Berkeley National Lab
    • Lawerence Berkeley National Lab

  • Yulin Chen

    • Physics department, University of Oxford
    • University of Oxford
    • Oxford Unv.
    • physics, university of oxford
    • Department of Physics, University of Oxford
    • Condensed Matter Physics, University of Oxford

  • Makoto Hashimoto

    • SLAC
    • SLAC, Stanford University
    • SLAC National Laboratory
    • Stanford University
    • SLAC - Natl Accelerator Lab
    • SLAC National Accelerator Laboratory
    • SSRL, SLAC

  • Donghui Lu

    • SSRL/SLAC
    • SLAC
    • SLAC, Stanford University
    • SLAC National Laboratory
    • Stanford University
    • SLAC - Natl Accelerator Lab
    • SLAC National Accelerator Laboratory
    • SSRL, SLAC

  • Robert Moore

    • Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory
    • SLAC
    • SLAC, Stanford University

  • Chan-Cuk hwang

    • Pohang Accelerator Laboratory

  • Choongyu Hwang

    • Pusan National University
    • Pusan Natl Univ

  • Miguel Ugeda

    • CIC Nanogune

  • Zhi Liu

    • Shanghai Institute of Microsystem and Information Technology
    • SIMIT,CAS
    • SIMIT

  • Xiaoming Xie

    • SIMIT,CAS

  • Hyejin Ryu

    • Lawrence Berkeley National Lab
    • Lawrence Berkeley National Laboratory
    • Lawrence Berkeley Natl Lab

  • Zahid Hussain

    • Lawrence Berkeley National Lab
    • Lawrence Berkeley Natl Lab

  • Sung-Kwan Mo

    • Lawrence Berkeley National Lab
    • Lawrence Berkeley Natl Lab
    • Lawrence Berkeley National Laboratory
    • Pohang Accelerator Laboratory
    • Advanced Light Source, Lawrence Berkeley National Laboratory