Realization of helical edge transport in a magnetic topological insulator bilayer

ORAL

Abstract

Various quantum Hall systems are ideal platforms for investigating exotic transport phenomena. Here we construct a bilayer structure consisting of two magnetic topological insulator thin films with different coercivity. When the edge states of the two layers are tuned by varying the magnetic field, a synthetic quantum spin Hall phase with helical edge states can be realized. The robustness of this phase can be confirmed by multi-terminal transport measurement.

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Presenters

  • GAOYUAN JIANG

    • Tsinghua Univ

Authors

  • GAOYUAN JIANG

    • Tsinghua Univ

  • Yang FENG

    • Tsinghua Univ

  • WEIXIONG WU

    • Tsinghua Univ

  • Shaorui Li

    • Tsinghua Univ

  • Ke He

    • Tsinghua Univ
    • Department of Physics, Tsinghua University
    • Tsinghua University
    • State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University

  • XUCUN MA

    • Tsinghua Univ
    • Physics Department, Tsinghua University
    • Department of Physics, Tsinghua University
    • State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua Univ.

  • Qi-Kun Xue

    • Tsinghua University
    • Department of Physics, Tsinghua University
    • Tsinghua Univ

  • Yayu Wang

    • Tsinghua Univ
    • Department of Physics, Tsinghua University