Magnetoresistance Measurements of Single-Crystal LnBa_2Cu_3O_y (Ln=Ho,Dy,Eu and Y) under Pulsed High Magnetic Field
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概要
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The high-field magnetoresistance of well-characterized LnBa.Cu.O, (Ln=Ho, Dy,Eu and Y) single crystals has been measured from 4.2 K to 300 K under a pulsedmagnetic field up to 60 T. The upper critical field H.. is well sketched by the usualanisotropic BCS model and the normal resistivity down to liquid helium temperatureshows that the system can be regarded as normal metal with positivemagnetoresistance. The residual resistivity is between 10 and 50 7tO cm, reflecting ahighly qualified sample preparation. The relations among upper critical field,coherence length and normal resistivity are discussed. It is concluded that themagnetic rare-earth ions No and Dy enhance H.. without affecting T..
- 社団法人日本物理学会の論文
- 1989-07-15
著者
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伊達 宗行
Department Of Physics Faculty Of Science Osaka University
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DATE Muneyuki
Department of Physics, Faculty of Science, Osaka University
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YAMAGISHI Akio
Research Center for Extreme Materials, Osaka University
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SUGIYAMA Kiyohiro
Department of Physics, Faculty of Science, Osaka University
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Hikita Makoto
NTT Opto-Electronics Laboratories
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Tajima Yukimichi
NTT Opto-Electronics Laboratories
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Fuke Hiroyuki
Department of Physics,Faculty of Science,Osaka University
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Date Muneyuki
Advanced Science Research Center Jaeri Tokai
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Fuke H
The Authors Are With Toshiba
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Fuke Hiroyuki
Department Of Internal Medicine Saiseikai Matsusaka General Hospital
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Yamada T
Sophia Univ. Tokyo Jpn
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Tajima Y
Sharp Corp. Nara
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Date Muneyuki
Graduate School Of Science Osaka University
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Yamagishi A
Osaka Univ. Toyonoka
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Yamagishi Akio
Research Center Of Extreme Materials Osaka University
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Yamagishi Akio
Research Center For Extreme Materials Osaka University
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Sugiyama Kiyohiro
Department Of Advanced Sciences The Graduate University For Advanced Studies
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Tajima Y
Ntt Applied Electronics Laboratories
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Fuke Hiroyuki
The Authors Are With Toshiba
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Hikita M
Ntt Advanced Technol. Corp. Ibaraki Jpn
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Hikita Makoto
Ntt Opto-electronics Laboratory
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Hikita Makoto
Ntt Advanced Technology Corp.
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Hikita Makoto
Ntt Photonics Laboratories
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Hikita Makoto
Ntt Opto-ekectronics Laboratories
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Date Muneyuki
Department Of Physics Faculity Of Science Osaka University
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