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Joule spectroscopy of hybrid superconductor–semiconductor nanodevices

Author

Listed:
  • A. Ibabe

    (Universidad Autónoma de Madrid
    Universidad Autónoma de Madrid)

  • M. Gómez

    (Universidad Autónoma de Madrid
    Universidad Autónoma de Madrid)

  • G. O. Steffensen

    (Universidad Autónoma de Madrid
    Universidad Autónoma de Madrid)

  • T. Kanne

    (Niels Bohr Institute, University of Copenhagen)

  • J. Nygård

    (Niels Bohr Institute, University of Copenhagen)

  • A. Levy Yeyati

    (Universidad Autónoma de Madrid
    Universidad Autónoma de Madrid)

  • E. J. H. Lee

    (Universidad Autónoma de Madrid
    Universidad Autónoma de Madrid)

Abstract

Hybrid superconductor-semiconductor devices offer highly tunable platforms, potentially suitable for quantum technology applications, that have been intensively studied in the past decade. Here we establish that measurements of the superconductor-to-normal transition originating from Joule heating provide a powerful spectroscopical tool to characterize such hybrid devices. Concretely, we apply this technique to junctions in full-shell Al-InAs nanowires in the Little-Parks regime and obtain detailed information of each lead independently and in a single measurement, including differences in the superconducting coherence lengths of the leads, inhomogeneous covering of the epitaxial shell, and the inverse superconducting proximity effect; all-in-all constituting a unique fingerprint of each device with applications in the interpretation of low-bias data, the optimization of device geometries, and the uncovering of disorder in these systems. Besides the practical uses, our work also underscores the importance of heating in hybrid devices, an effect that is often overlooked.

Suggested Citation

  • A. Ibabe & M. Gómez & G. O. Steffensen & T. Kanne & J. Nygård & A. Levy Yeyati & E. J. H. Lee, 2023. "Joule spectroscopy of hybrid superconductor–semiconductor nanodevices," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38533-2
    DOI: 10.1038/s41467-023-38533-2
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    References listed on IDEAS

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    1. Sebastian Heedt & Marina Quintero-Pérez & Francesco Borsoi & Alexandra Fursina & Nick Loo & Grzegorz P. Mazur & Michał P. Nowak & Mark Ammerlaan & Kongyi Li & Svetlana Korneychuk & Jie Shen & May An Y, 2021. "Shadow-wall lithography of ballistic superconductor–semiconductor quantum devices," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
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