Unconventional Superconductivity and Josephson Effect in Superconductor/Dirty Normal Metal/Superconductor Junctions
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概要
- 論文の詳細を見る
A relation between amplitudes of Josephson current and nodes in excitation-gap of unconventional superconductors is studied in superconductor/dirty normal metal/superconductor junctions. It is found that ensemble average of the Josephson current vanishes when the junction interface is perpendicular to a plane which includes line- or point-zeros of the excitation-gap. A zero-energy state formed at the junction interface is a character of unconventional superconductor junctions and causes large sample-to-sample fluctuations in the Josephson current in low temperatures. The disappearance of the ensemble-averaged Josephson current and the large fluctuations occur at the same time when the Cooper pairs have d- or f-wave pairing symmetries.
- 社団法人日本物理学会の論文
- 2002-03-15
著者
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ASANO Yasuhiro
Department of Applied Physics,Nagoya University
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Asano Yasuhiro
Department Of Applied Physics And Chemistry Fukui University Of Technology
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Asano Yasuhiro
Department Of Applied Physics Hokkaido University
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