Environmental Effect on Ultrasmall Josephson Junctions
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概要
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In order to study the effect of environment on ultrasmall Josephson junctions, we measured the temperature dependence of the zero-bias resistance of single ultrasmall Josephson junctions with different lead resistances. The normal-state resistance of the junctions was chosen to be around the resistance quantum R_Q=h/4e^2=6.45 kΩ. We found that the temperature dependence was strongly dependent on the lead resistance. This result indicates that there exists a clear environmental effect on ultrasmall Josephson junctions. The observed environmental effect can be explained in terms of the difference of bias conditions or the noise effect on superconductivity, both of which can be effectively controlled by the lead resistance. The marked noise effect was also manifested by the magnetic field dependence of the V-I characteristics of linear junction arrays with tunnel resistances much lower than R_Q.
- 社団法人応用物理学会の論文
- 1996-06-15
著者
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島津 佳弘
横国大工
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Kobayashi S
Non Destructive Evaluation And Science Research Center Faculty Of Engineering Iwate University
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SAITO Kazuhiro
Tochigi Research Laboratories of Kao Corporation
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Shimazu Yoshihiro
Department Of Physics Faculty Of Engineering Yokohama National University
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Kobayashi Satoru
Non Destructive Evaluation And Science Research Center Faculty Of Engineering Iwate University
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IKEHATA Seiichiro
Department of Applied Physics, Faculty of Science, Science University of Tokyo
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Kobayashi Shun-ichi
Department Of Physics Faculty Of Science University Of Tokyo
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Ikehata Seiichiro
Faculty of Science, Tokyo University of Science
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Ikehata S
Faculty Of Science Tokyo University Of Science
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Kobayashi Shun-ichi
Department Of Pediatrics Institute Of Health Bioscience The University Of Tokushima Graduate School
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Kobayashi Shun-ichi
Department of Functional Machinery and Mechanics, Shinshu University
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