Gate-tunable superconducting quantum interference devices of PbS nanowires

Abstract

We report on the fabrication and electrical transport properties of gate-tunable superconducting quantum interference devices (SQUIDs), made of semiconducting PbS nanowire contacted with PbIn superconducting electrodes. Applied with a magnetic field perpendicular to the plane of the nano-hybrid SQUID, periodic oscillations of the critical current due to the flux quantization in SQUID are observed up to T = 4.0 K. Nonsinusoidal current-phase relationship is obtained as a function of temperature and gate voltage, which is consistent with a short and diffusive junction model.

14 pages, 4 figures

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Cited by in corpus (5)

• Multiple Andreev reflections and Shapiro steps in a Ge-Si nanowire Josephson junction
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• Very Strong Superconducting Proximity Effects in PbS Semiconductor Nanowires
• Higher harmonic resistance oscillations in micro-bridge superconducting Nb ring
• Zero bias conductance peak in InAs nanowire coupled to superconducting electrodes