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Superconductivity in oxygen

Author

Listed:
  • K. Shimizu

    (Faculty of Engineering Science, Osaka University
    CREST of Japan Science and Technology Corporation)

  • K. Suhara

    (Faculty of Engineering Science, Osaka University)

  • M. Ikumo

    (Faculty of Engineering Science, Osaka University)

  • M. I. Eremets

    (CREST of Japan Science and Technology Corporation)

  • K. Amaya

    (Faculty of Engineering Science, Osaka University
    CREST of Japan Science and Technology Corporation
    Advanced Science Research Center, Japan Atomic Energy Research Institute)

Abstract

Among the simple diatomic molecules, oxygen is of particular interest because it shows magnetism at low temperatures. Moreover, at pressures exceeding 95 GPa (∼0.95 Mbar), solid molecular oxygen becomes metallic, accompanied by a structural transition1. The metallization process is characterized by an increase in optical reflectivity2, and a change in the slope of the resistance–temperature curve3. Here we report that at pressures of around 100 GPa, solid oxygen becomes superconducting, with a transition temperature of 0.6 K. The transition is revealed by both resistivity measurements and a Meissner demagnetization signal.

Suggested Citation

  • K. Shimizu & K. Suhara & M. Ikumo & M. I. Eremets & K. Amaya, 1998. "Superconductivity in oxygen," Nature, Nature, vol. 393(6687), pages 767-769, June.
    • Handle: RePEc:nat:nature:v:393:y:1998:i:6687:d:10.1038_31656
    DOI: 10.1038/31656
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    Cited by:

    1. Bo Lin & Jian Jiang & Xiao Cheng Zeng & Lei Li, 2023. "Temperature-pressure phase diagram of confined monolayer water/ice at first-principles accuracy with a machine-learning force field," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    2. M. I. Eremets & V. S. Minkov & P. P. Kong & A. P. Drozdov & S. Chariton & V. B. Prakapenka, 2023. "Universal diamond edge Raman scale to 0.5 terapascal and implications for the metallization of hydrogen," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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