Realization of a Double-slit SQUID Geometry by Fermi Arc Surface States in a WTe2 Weyl Semimetal

  • O. O. Shvetsov
  • A. Kononov
  • A. V. Timonina
  • N. N. Kolesnikov
  • E. V. Deviatov
Article

Abstract

We experimentally study electron transport between two superconducting indium leads, coupled to the WTe2 crystal surface.WTe2 is characterized by presence of Fermi arc surface states, as a predicted type-II Weyl semimetal candidate. We demonstrate Josephson current in unprecedentedly long 5 μm In–WTe2–In junctions, which is confirmed by IV curves evolution with temperature and magnetic field. The Josephson current is mostly carried by the topological surface states, which we demonstrate in a double-slit superconducting quantum interference device geometry, realized by coupling the opposite WTe2 crystal surfaces.

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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • O. O. Shvetsov
    • 1
  • A. Kononov
    • 1
  • A. V. Timonina
    • 1
  • N. N. Kolesnikov
    • 1
  • E. V. Deviatov
    • 1
  1. 1.Institute of Solid State Physics of the Russian Academy of SciencesChernogolovkaRussia

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