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Probing spin-orbit interactions in monolayer WTe<sub>2</sub> edge states

ORAL

Abstract

Monolayer WTe2 displays edge conduction that is consistent with the material being a two-dimensional topological insulator. The expected helical nature of the edge conduction should limit the conductance between adjacent contacts on an edge to e2/h, and this is consistent with experiments to date. However, the helical nature has not been supported by experiments that probe the form of the Hamiltonian of the edge states. To address this, we investigate the angular dependence of the magnetic field on the conduction of edges and cracks in monolayer WTe2 flakes as a function of gate voltage, temperature, and edge orientation relative to the crystal axes as determined by scanning microwave impedance microscopy.

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Presenters

  • Elliott Runburg

    University of Washington

Authors

  • Elliott Runburg

    University of Washington

  • Wenjin Zhao

    University of Washington

  • Zaiyao Fei

    University of Washington, Physics, University of Washington

  • Joshua Mutch

    University of Washington

  • Paul Malinowski

    University of Washington

  • Bosong Sun

    University of Washington

  • Xiong Huang

    University of California, Riverside

  • Yongtao Cui

    University of California, Riverside, University of California, Reverside

  • Xiaodong Xu

    University of Washington, Physics, University of Washington

  • Jiun-Haw Chu

    University of Washington, Department of Physics, University of Washington, Physics, University of Washington

  • David Cobden

    University of Washington, Physics, University of Washington