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Superconducting phase diagram of H3S under high magnetic fields

Author

Listed:
  • Shirin Mozaffari

    (Florida State University)

  • Dan Sun

    (Los Alamos National Laboratory)

  • Vasily S. Minkov

    (Max-Planck-Institut fuer Chemie)

  • Alexander P. Drozdov

    (Max-Planck-Institut fuer Chemie)

  • Dmitry Knyazev

    (Max-Planck-Institut fuer Chemie)

  • Jonathan B. Betts

    (Los Alamos National Laboratory)

  • Mari Einaga

    (Osaka University)

  • Katsuya Shimizu

    (Osaka University)

  • Mikhail I. Eremets

    (Max-Planck-Institut fuer Chemie)

  • Luis Balicas

    (Florida State University)

  • Fedor F. Balakirev

    (Los Alamos National Laboratory)

Abstract

The discovery of superconductivity at 260 K in hydrogen-rich compounds like LaH10 re-invigorated the quest for room temperature superconductivity. Here, we report the temperature dependence of the upper critical fields μ0Hc2(T) of superconducting H3S under a record-high combination of applied pressures up to 160 GPa and fields up to 65 T. We find that Hc2(T) displays a linear dependence on temperature over an extended range as found in multigap or in strongly-coupled superconductors, thus deviating from conventional Werthamer, Helfand, and Hohenberg (WHH) formalism. The best fit of Hc2(T) to the WHH formalism yields negligible values for the Maki parameter α and the spin–orbit scattering constant λSO. However, Hc2(T) is well-described by a model based on strong coupling superconductivity with a coupling constant λ ~ 2. We conclude that H3S behaves as a strong-coupled orbital-limited superconductor over the entire range of temperatures and fields used for our measurements.

Suggested Citation

  • Shirin Mozaffari & Dan Sun & Vasily S. Minkov & Alexander P. Drozdov & Dmitry Knyazev & Jonathan B. Betts & Mari Einaga & Katsuya Shimizu & Mikhail I. Eremets & Luis Balicas & Fedor F. Balakirev, 2019. "Superconducting phase diagram of H3S under high magnetic fields," Nature Communications, Nature, vol. 10(1), pages 1-6, December.
  • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10552-y
    DOI: 10.1038/s41467-019-10552-y
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    Cited by:

    1. Dan Sun & Vasily S. Minkov & Shirin Mozaffari & Ying Sun & Yanming Ma & Stella Chariton & Vitali B. Prakapenka & Mikhail I. Eremets & Luis Balicas & Fedor F. Balakirev, 2021. "High-temperature superconductivity on the verge of a structural instability in lanthanum superhydride," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    2. V. S. Minkov & S. L. Bud’ko & F. F. Balakirev & V. B. Prakapenka & S. Chariton & R. J. Husband & H. P. Liermann & M. I. Eremets, 2022. "Magnetic field screening in hydrogen-rich high-temperature superconductors," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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