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arXiv · 2204.02430

Nonlocal conductance spectroscopy of Andreev bound states in gate-defined InAs/Al nanowires

Andreas Pöschl·Alisa Danilenko·Deividas Sabonis·Kaur Kristjuhan·Tyler Lindemann·Candice Thomas·Michael J. Manfra·Charles M. Marcus
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Abstract

The charge character of Andreev bound states (ABSs) in a three-terminal semiconductor-superconductor hybrid nanowire was measured using local and nonlocal tunneling spectroscopy. The device is fabricated using an epitaxial InAs/Al two-dimensional heterostructure with several gate-defined side probes. ABSs are found to oscillate around zero as a function of gate voltage, with modifications of their charge consistent with theoretical expectations for the total Bardeen-Cooper- Schrieffer (BCS) charge of ABSs.

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Andreas Pöschl, Alisa Danilenko, Deividas Sabonis, Kaur Kristjuhan, Tyler Lindemann, Candice Thomas, Michael J. Manfra, Charles M. Marcus. 2022-04-05. Nonlocal conductance spectroscopy of Andreev bound states in gate-defined InAs/Al nanowires. https://doi.org/10.1103/physrevb.106.l241301

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