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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.

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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