Oxygen under High Pressure-Temperature Dependence of Electrical Resistance

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We have measured electrical resistance of oxygen under high pressures up to 120 GPa and at temperatures down to 45 mK. With increasing pressure, the resistivity of oxygen was found to decrease rapidly and reached 0. 3 ohm x cm at 95 ± 5 GPa that was still comparable to that of semiconductor. We present measurements of the temperature dependence of electrical resistance of oxygen to observe the metallic behavior in the temperature dependence. The temperature dependence of resistance clearly changes its slope of dR/dT at around 90 GPa. The critical pressure is in agreement with previous reports for the metallization. We found an abrupt drop of resistance which may indicate superconducting transition of metallic oxygen at pressures above 98 GPa with T<SUB>c</SUB>∼0. 6 K. This is confirmed by the magnetic field dependence of the resistance drop.

収録刊行物

  • 高圧力の科学と技術 = The Review of high pressure science and technology  

    高圧力の科学と技術 = The Review of high pressure science and technology 7, 784-786, 1998 

    The Japan Society of High Pressure Science and Technology

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各種コード

  • NII論文ID(NAID)
    10002691842
  • NII書誌ID(NCID)
    AN10452913
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    0917639X
  • NDL 記事登録ID
    4494056
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z17-1589
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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