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Superconductivity in an extreme strange metal

Author

Listed:
  • D. H. Nguyen

    (Vienna University of Technology)

  • A. Sidorenko

    (Vienna University of Technology)

  • M. Taupin

    (Vienna University of Technology)

  • G. Knebel

    (Université Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS)

  • G. Lapertot

    (Université Grenoble Alpes, CEA, Grenoble INP, IRIG, PHELIQS)

  • E. Schuberth

    (Technische Universität München)

  • S. Paschen

    (Vienna University of Technology)

Abstract

Some of the highest-transition-temperature superconductors across various materials classes exhibit linear-in-temperature ‘strange metal’ or ‘Planckian’ electrical resistivities in their normal state. It is thus believed by many that this behavior holds the key to unlock the secrets of high-temperature superconductivity. However, these materials typically display complex phase diagrams governed by various competing energy scales, making an unambiguous identification of the physics at play difficult. Here we use electrical resistivity measurements into the micro-Kelvin regime to discover superconductivity condensing out of an extreme strange metal state—with linear resistivity over 3.5 orders of magnitude in temperature. We propose that the Cooper pairing is mediated by the modes associated with a recently evidenced dynamical charge localization–delocalization transition, a mechanism that may well be pertinent also in other strange metal superconductors.

Suggested Citation

  • D. H. Nguyen & A. Sidorenko & M. Taupin & G. Knebel & G. Lapertot & E. Schuberth & S. Paschen, 2021. "Superconductivity in an extreme strange metal," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24670-z
    DOI: 10.1038/s41467-021-24670-z
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    Cited by:

    1. Shu Cai & Jinyu Zhao & Ni Ni & Jing Guo & Run Yang & Pengyu Wang & Jinyu Han & Sijin Long & Yazhou Zhou & Qi Wu & Xianggang Qiu & Tao Xiang & Robert J. Cava & Liling Sun, 2023. "The breakdown of both strange metal and superconducting states at a pressure-induced quantum critical point in iron-pnictide superconductors," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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