Realization of a Double-Slit SQUID Geometry by Fermi Arc Surface States in a WTe2 Weyl Semimetal
OO Shvetsov, A Kononov, AV Timonina, NN Kolesnikov… - JETP Letters, 2018 - Springer
OO Shvetsov, A Kononov, AV Timonina, NN Kolesnikov, EV Deviatov
JETP Letters, 2018•SpringerWe experimentally study electron transport between two superconducting indium leads,
coupled to the WTe 2 crystal surface. WTe 2 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–WTe 2–In junctions, which is confirmed by I–V
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 …
coupled to the WTe 2 crystal surface. WTe 2 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–WTe 2–In junctions, which is confirmed by I–V
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 …
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 I–V 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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