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Expanded quantum vortex liquid regimes in the electron nematic superconductors FeSe1−xSx and FeSe1−xTex

Author

Listed:
  • M. Čulo

    (Radboud University
    Institut za fiziku)

  • S. Licciardello

    (Radboud University)

  • K. Ishida

    (University of Tokyo)

  • K. Mukasa

    (University of Tokyo)

  • J. Ayres

    (University of Bristol)

  • J. Buhot

    (University of Bristol)

  • Y.-T. Hsu

    (Radboud University
    National Tsing Hua University, No. 101, Section. 2, Kuang-Fu Road)

  • S. Imajo

    (University of Tokyo)

  • M. W. Qiu

    (University of Tokyo)

  • M. Saito

    (University of Tokyo)

  • Y. Uezono

    (Hirosaki University)

  • T. Otsuka

    (Hirosaki University)

  • T. Watanabe

    (Hirosaki University)

  • K. Kindo

    (University of Tokyo)

  • T. Shibauchi

    (University of Tokyo)

  • S. Kasahara

    (Okayama University)

  • Y. Matsuda

    (Kyoto University)

  • N. E. Hussey

    (Radboud University
    University of Bristol)

Abstract

The quantum vortex liquid (QVL) is an intriguing state of type-II superconductors in which intense quantum fluctuations of the superconducting (SC) order parameter destroy the Abrikosov lattice even at very low temperatures. Such a state has only rarely been observed, however, and remains poorly understood. One of the key questions is the precise origin of such intense quantum fluctuations and the role of nearby non-SC phases or quantum critical points in amplifying these effects. Here we report a high-field magnetotransport study of FeSe1−xSx and FeSe1−xTex which show a broad QVL regime both within and beyond their respective electron nematic phases. A clear correlation is found between the extent of the QVL and the strength of the superconductivity. This comparative study enables us to identify the essential elements that promote the QVL regime in unconventional superconductors and to demonstrate that the QVL regime itself is most extended wherever superconductivity is weakest.

Suggested Citation

  • M. Čulo & S. Licciardello & K. Ishida & K. Mukasa & J. Ayres & J. Buhot & Y.-T. Hsu & S. Imajo & M. W. Qiu & M. Saito & Y. Uezono & T. Otsuka & T. Watanabe & K. Kindo & T. Shibauchi & S. Kasahara & Y., 2023. "Expanded quantum vortex liquid regimes in the electron nematic superconductors FeSe1−xSx and FeSe1−xTex," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-39730-9
    DOI: 10.1038/s41467-023-39730-9
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    References listed on IDEAS

    as
    1. Qisi Wang & Yao Shen & Bingying Pan & Xiaowen Zhang & K. Ikeuchi & K. Iida & A. D. Christianson & H. C. Walker & D. T. Adroja & M. Abdel-Hafiez & Xiaojia Chen & D. A. Chareev & A. N. Vasiliev & Jun Zh, 2016. "Magnetic ground state of FeSe," Nature Communications, Nature, vol. 7(1), pages 1-7, November.
    2. K. Mukasa & K. Matsuura & M. Qiu & M. Saito & Y. Sugimura & K. Ishida & M. Otani & Y. Onishi & Y. Mizukami & K. Hashimoto & J. Gouchi & R. Kumai & Y. Uwatoko & T. Shibauchi, 2021. "High-pressure phase diagrams of FeSe1−xTex: correlation between suppressed nematicity and enhanced superconductivity," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    3. J. P. Sun & K. Matsuura & G. Z. Ye & Y. Mizukami & M. Shimozawa & K. Matsubayashi & M. Yamashita & T. Watashige & S. Kasahara & Y. Matsuda & J. -Q. Yan & B. C. Sales & Y. Uwatoko & J. -G. Cheng & T. S, 2016. "Dome-shaped magnetic order competing with high-temperature superconductivity at high pressures in FeSe," Nature Communications, Nature, vol. 7(1), pages 1-7, November.
    4. Chandan Setty & Shinibali Bhattacharyya & Yifu Cao & Andreas Kreisel & P. J. Hirschfeld, 2020. "Topological ultranodal pair states in iron-based superconductors," Nature Communications, Nature, vol. 11(1), pages 1-6, December.
    5. S. Licciardello & J. Buhot & J. Lu & J. Ayres & S. Kasahara & Y. Matsuda & T. Shibauchi & N. E. Hussey, 2019. "Electrical resistivity across a nematic quantum critical point," Nature, Nature, vol. 567(7747), pages 213-217, March.
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