Phase Diagram of Superconducting Na_xCoO_2・yH_2O(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
- 論文の詳細を見る
We discovered that oxonium (H_3O^+) ion content is a key parameter to the understanding of unique superconductivity in sodium cobalt oxyhydrate. As Na^+ ions are substituted by H_3O^+ ions, keeping the Co valence constant, the superconducting phase is transformed into a magnetically ordered phase, and then into a hitherto hidden superconducting phase. Furthermore, the superconducting phase previously discovered is suppressed by the magnetic phase under application of a magnetic field. These facts indicate that the superconductivity is induced by magnetic interactions which are substantially governed by the oxonium ion content.
- 社団法人日本物理学会の論文
- 2005-11-15
著者
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TAKADA Kazunori
Advanced Materials Laboratory, National Institute for Materials Science
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SASAKI Takayoshi
Advanced Materials Laboratory, National Institute for Materials Science
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MUROMACHI Eiji
Superconducting Materials Center, National Institute for Materials Science
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SAKURAI Hiroya
International Center for Young Scientists, National Institute for Materials Science
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Sakurai Hiroya
Superconducting Materials Center National Institute For Materials Science (smc/nims)
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Sasaki T
Advanced Materials Laboratory National Institute For Materials Science
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Sakai Hironori
Advanced Science Research Center Japan Atomic Energy Agency
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Muromachi Eiji
Superconducting Materials Center National Institute For Materials Science
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Takada Kazunori
Advanced Materials Laboratory National Institute For Materials Science
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Sasaki Takayoshi
Advanced Materials Laboratory National Institute For Materials Science
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SAKURAI Hiroya
International Center for Young Scientists, National Institute for Materials Science:Superconducting Materials Center, National Institute for Materials Science
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