Phase tunning of Al-MoTe<sub>2</sub>-Al Josephson junction with asymmetric SQUID

ORAL

Abstract

Proximity-induced superconducting pairing in topological material is an attractive topic because of its potential realization of topological superconductivity, and Josephson effect is one of the powerful tools to study. However, the phase freedom of the Josephson effect has not been fully explored yet. With the help of asymmetric SQUID, we are able to tune the phase across the planer SNS junction made from type-II Weyl semimetal MoTe2 and Al contact. The current phase relation of SNS junction is measured, and subharmonic structure appears at finite voltage regime, which is explained by multiple Andreev reflection scheme.

*Supported by the U.S. Department of Energy (Award DE-SC0017863), MRSEC award from the U.S. National Science Foundation (NSF DMR-2011750), and Gordon and Betty Moore Foundation's EPiQS initiative (Grant GBMF4539)

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Presenters

  • Zheyi Zhu

    • Princeton University

Authors

  • Zheyi Zhu

    • Princeton University

  • Stephan Kim

    • Princeton Univeristy
    • Princeton University

  • Shiming Lei

    • Princeton University
    • Rice University
    • Rice Univ

  • Leslie M Schoop

    • Princeton University

  • Robert J Cava

    • Princeton University
    • Department of Chemistry, Princeton University

  • Phuan Ong

    • Princeton University
    • Department of Physics, Princeton University, Princeton, New Jersey 08544, USA