High-Pressure Study on the Superconducting Pyrochlore Oxide Cd_2Re_2O_7
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概要
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Superconducting and structural phase transitions in a pyrochlore oxide Cd_2Re_2O_7 are studied under high pressure by x-ray diffraction and electrical resistivity measurements. A rich P-T phase diagram is obtained, which contains at least two phases with the ideal and slightly distorted pyrochlore structures. It is found that the transition between them is suppressed with increasing pressure and finally disappears at a critical pressure P_c = 3.5 GPa. Remarkable enhancements in the residual resistivity as well as the coefficient A of the AT^2 term in the resistivity are found around the critical pressure. Superconductivity is detected only for the phase with the structural distortion.
- 社団法人日本物理学会の論文
- 2002-06-15
著者
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HIROI Zenji
Institute for Solid State Physics, University of Tokyo
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HANAWA Masafumi
Institute for Solid State Physics, University of Tokyo
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広井 善二
Institute For Solid State Physics University Of Tokyo
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HEDO Masato
Faculty of Science, University of the Ryukyus
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Abliz Melike
Graduate School Of Science Osaka University
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Abliz M
Institute For Solid State Physics University Of Tokyo
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Abliz Melike
Institute For Solid State Physics University Of Tokyo
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Hedo Masato
Faculty Of Science University Of The Ryukyus
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Hedo Masato
Institute For Solid State Physics (issp) University Of Tokyo
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Hedo Masato
The Institute For Solid State Physics The University Of Tokyo
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Hiroi Zenji
Institute For Chemical Research Kyoto University
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Yamauchi Touru
Institute For Solid State Physics University Of Tokyo
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YAMADA Takahiro
Japan Synchrotron Radiation Research Institute
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Ohishi Y
Japan Synchrotron Radiation Res. Inst. Hyogo
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SHIMOMURA Osamu
Japan Synchrotron Radiation Research Institute
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HANAWA Masafumi
SPring-8
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OHISHI Yasuo
Institute for Solid State Physics, University of Tokyo
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ABLIZ Melike
SPring-8
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HEDO Masato
Japan Atomic Energy Research Institute (JAERI)
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UWATOKO Yoshiya
SPring-8
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HIROI Zenji
ISSP, University of Tokyo
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Ohishi Yasuo
Institute For Solid State Physics University Of Tokyo
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Hiroi Z
Univ. Tokyo Kashiwa Jpn
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Hanawa M
Institute For Solid State Physics University Of Tokyo
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Yamada Takahiro
Japan Synchrotron Radiation Research Institute (jasri)
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Shimomura Osamu
Japan Synchrotron Radiation Research Institute (jasri)
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Yamauchi Touru
Institute For Solid State Physics The University Of Tokyo
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