Evidence of One-dimensional Edge States in Quasi-one-dimensional Topological Insulators Bismuth halogenides

ORAL

Abstract

Bi4Br4 is predicted to host gapless monolayer step edge and a large bulk gap (~210meV) which indicates that it is a promising quantum spin Hall insulator up to room temperature. Due to the weak coupling between layers, even in multilayer Bi4Br4, the quantum spin hall edge can still be preserved. To date, the study on transport properties of Bi4Br4 is still rare. In this talk, I will discuss our recent work on transport study of multilayer Bi4Br4 devices and preliminary evidence that indicates the presence of one-dimensional edge states.

*This work is supported by DMREF collaborative research grant: Establishing the platform of quasi-one-dimensional topological insulators with emergent functionalities.

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Presenters

  • Zheneng Zhang

    • the Ohio State University

Authors

  • Zheneng Zhang

    • the Ohio State University

  • Jiayin Wang

    • Ohio State University

  • Chun Ning Lau

    • Ohio State University
    • Ohio State Univ - Columbus

  • Wenhao Liu

    • University of Texas at Dallas

  • Chiho Yoon

    • University of Texas at Dallas
    • The University of Texas at Dallas

  • Fan Zhang

    • The University of Texas at Dallas

  • Bing Lv

    • The University of Texas at Dallas
    • TCSUH and Department of Chemistry, University of Houston.

  • Ming Yi

    • Rice University

  • Robert J Birgeneau

    • University of California, Berkeley

  • Yichen Zhang

    • Rice University

  • Ji Seop Oh

    • University of California Berkeley

  • Nikhil Uday Dhale

    • The University of Texas at Dallas
    • University of Texas at Dallas