Gate-induced superconductivity in monolayer WTe<sub>2</sub>

ORAL

Abstract

We present the discovery that exfoliated monolayer WTe2, recently reported to be a 2D topological insulator, turns superconducting under electrostatic doping. The observed superconductivity, with a Tc around 700 mK, occurs at much lower levels of electron doping as compared to any other known 2D superconductor. The transition from normal to superconducting is gradual in temperature, and responds very differently to perpendicular and in-plane magnetic fields. The critical in-plane magnetic field exceeds the Pauli limit by over a factor of 2, indicating strong spin-orbit interaction.

*TP, ZF, WZ, XX, and DC supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, Awards DE-SC0002197 (DHC) and DE-SC0018171 (XX); AFOSR FA9550-14-1-0277; NSF EFRI 2DARE 1433496; and NSF MRSEC 1719797. ES, PB, CO, SL, and JF supported by t

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Presenters

  • Christian Olsen

    • Physics and Astronomy, University of British Columbia
    • Univ of British Columbia

Authors

  • Ebrahim Sajadi

    • Physics and Astronomy, University of British Columbia

  • Tauno Palomaki

    • Physics, University of Washington

  • Zaiyao Fei

    • Univ of Washington
    • Physics, University of Washington

  • Wenjin Zhao

    • Physics, University of Washington

  • Philip Bement

    • Physics and Astronomy, University of British Columbia

  • Christian Olsen

    • Physics and Astronomy, University of British Columbia
    • Univ of British Columbia

  • Silvia Luescher

    • Physics and Astronomy, University of British Columbia

  • Xiaodong Xu

    • University of Washington
    • Univ of Washington
    • Physics, Univ of Washington
    • Department of Physics, University of Washington
    • Physics, University of Washington
    • Physics, and Materials Science and Engineering, Univ of Washington
    • Department of Physics, University of Washington - Seattle

  • Joshua Folk

    • Physics and Astronomy, University of British Columbia
    • Univ of British Columbia

  • David Cobden

    • Univ of Washington
    • Department of Physics, University of Washington
    • University of Washington
    • Physics, University of Washington