Critical Current Control in YBa2Cu3O7-δ Films Using Artificial Pinning Centers
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概要
- 論文の詳細を見る
High-temperature superconductors can carry high non dissipative currents at low temperatures as long as quantized vortices are pinned. However, the currents in a magnetic field at liquid nitrogen temperature (77 K) are not sufficiently high for practical use due to the weak pinning. For the improvement of nondissipative currents in YBa2Cu3O7-δ films, linear defects that extended to the $c$-axis of the film were introduced using a novel nanostructure technology. We observed a marked enhancement of the nondissipative currents even at 77 K and high fields when the fields were applied close to the $c$-axis. This is a clear demonstration of enhanced pinning using artificially incorporated pinning centers.
- Japan Society of Applied Physicsの論文
- 2005-01-10
著者
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Ichinose Ataru
Central Research Institute Of Electric Power Industry
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MUKAIDA Masashi
Department of Electrical and Information Engineering, Yamagata University
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HORIDE Tomoya
Department of Materials Science and Engineering, Kyoto University
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Matsumoto Kaname
Department Of Materials Science And Engineering Kyushu Institute Of Technology
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Horii Shigeru
Department Of Applied Chemistry School Of Engineering University Of Tokyo
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Yoshida Yutaka
Deparlment Of Internal Medicine School Of Medicine Kobe University
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Mukaida Masashi
Department of Electrical and Information Engineering, Yamagata University, Yonezawa 992-8510, Japan
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Ichinose Ataru
Central Research Institute of Electric Power Industry, Yokosuka 240-0196, Japan
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Horii Shigeru
Department of Superconductivity, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
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