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Superconductivity in the vicinity of antiferromagnetic order in CrAs

Author

Listed:
  • Wei Wu

    (Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences)

  • Jinguang Cheng

    (Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
    Institute for Solid State Physics, University of Tokyo)

  • Kazuyuki Matsubayashi

    (Institute for Solid State Physics, University of Tokyo)

  • Panpan Kong

    (Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences)

  • Fukun Lin

    (Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences)

  • Changqing Jin

    (Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
    Collaborative Innovation Center of Quantum Matter)

  • Nanlin Wang

    (Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
    Collaborative Innovation Center of Quantum Matter
    International Center for Quantum Materials, School of Physics, Peking University)

  • Yoshiya Uwatoko

    (Institute for Solid State Physics, University of Tokyo)

  • Jianlin Luo

    (Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
    Collaborative Innovation Center of Quantum Matter)

Abstract

One of the common features of unconventional superconducting systems such as the heavy-fermion, high transition-temperature cuprate and iron-pnictide superconductors is that the superconductivity emerges in the vicinity of long-range antiferromagnetically ordered state. In addition to doping charge carriers, the application of external pressure is an effective and clean approach to induce unconventional superconductivity near a magnetic quantum critical point. Here we report on the discovery of superconductivity on the verge of antiferromagnetic order in CrAs via the application of external pressure. Bulk superconductivity with Tc≈2 K emerges at the critical pressure Pc≈8 kbar, where the first-order antiferromagnetic transition at TN≈265 K under ambient pressure is completely suppressed. The close proximity of superconductivity to an antiferromagnetic order suggests an unconventional pairing mechanism for CrAs. The present finding opens a new avenue for searching novel superconductors in the Cr and other transition metal-based systems.

Suggested Citation

  • Wei Wu & Jinguang Cheng & Kazuyuki Matsubayashi & Panpan Kong & Fukun Lin & Changqing Jin & Nanlin Wang & Yoshiya Uwatoko & Jianlin Luo, 2014. "Superconductivity in the vicinity of antiferromagnetic order in CrAs," Nature Communications, Nature, vol. 5(1), pages 1-5, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6508
    DOI: 10.1038/ncomms6508
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    Cited by:

    1. P. T. Yang & Z. Y. Liu & K. Y. Chen & X. L. Liu & X. Zhang & Z. H. Yu & H. Zhang & J. P. Sun & Y. Uwatoko & X. L. Dong & K. Jiang & J. P. Hu & Y. F. Guo & B. S. Wang & J.-G. Cheng, 2022. "Pressured-induced superconducting phase with large upper critical field and concomitant enhancement of antiferromagnetic transition in EuTe2," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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