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Spin-orbit driven superconducting proximity effects in Pt/Nb thin films

Author

Listed:
  • Machiel Flokstra

    (University of St. Andrews)

  • Rhea Stewart

    (University of St. Andrews
    Science and Technology Facilities Council)

  • Chi-Ming Yim

    (University of St. Andrews
    Shanghai Jiao Tong University)

  • Christopher Trainer

    (University of St. Andrews)

  • Peter Wahl

    (University of St. Andrews)

  • David Miller

    (University of St. Andrews)

  • Nathan Satchell

    (University of Leeds)

  • Gavin Burnell

    (University of Leeds)

  • Hubertus Luetkens

    (Paul Scherrer Institut)

  • Thomas Prokscha

    (Paul Scherrer Institut)

  • Andreas Suter

    (Paul Scherrer Institut)

  • Elvezio Morenzoni

    (Paul Scherrer Institut)

  • Irina V. Bobkova

    (Institute of Solid State Physics
    Moscow Institute of Physics and Technology
    National Research University Higher School of Economics)

  • Alexander M. Bobkov

    (Institute of Solid State Physics)

  • Stephen Lee

    (University of St. Andrews)

Abstract

Manipulating the spin state of thin layers of superconducting material is a promising route to generate dissipationless spin currents in spintronic devices. Approaches typically focus on using thin ferromagnetic elements to perturb the spin state of the superconducting condensate to create spin-triplet correlations. We have investigated simple structures that generate spin-triplet correlations without using ferromagnetic elements. Scanning tunneling spectroscopy and muon-spin rotation are used to probe the local electronic and magnetic properties of our hybrid structures, demonstrating a paramagnetic contribution to the magnetization that partially cancels the Meissner screening. This spin-orbit generated magnetization is shown to derive from the spin of the equal-spin pairs rather than from their orbital motion and is an important development in the field of superconducting spintronics.

Suggested Citation

  • Machiel Flokstra & Rhea Stewart & Chi-Ming Yim & Christopher Trainer & Peter Wahl & David Miller & Nathan Satchell & Gavin Burnell & Hubertus Luetkens & Thomas Prokscha & Andreas Suter & Elvezio Moren, 2023. "Spin-orbit driven superconducting proximity effects in Pt/Nb thin films," Nature Communications, Nature, vol. 14(1), pages 1-5, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-40757-1
    DOI: 10.1038/s41467-023-40757-1
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