Temperature Dependence of Critical Current in Granular Al Bridges with Different Thicknesses and Widths

• Mizuno Kazuo

  Department of Physics, Kyushu University

• Aomine Takafumi

  Research Institute of Fundamental Information Science, Kyushu University

書誌事項

タイトル別名

• Temperature Dependence of Critical Curr

抄録

Critical currents of granular Al bridges with different thicknesses and widths have been measured as a function of temperature. The experimental values of critical current were somewhat smaller than the pair-breaking current in the Ginzburg-Landau theory, being proportional to (T_c−T)^3⁄2 near the critical temperature T_c. In the lower temperature region they became to be proportional to (T_c−T). It was found from the temperature and thickness dependences that critical current seems to be governed by the mechanism, different from the pair-breaking one.<BR>Slightly below T_c, appearance of electrical resistance was observed, depending on the bridge thickness, but not on its width. It is suggested that vortices are thermally activated and their flow generates a voltage.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 48 (6), 1908-1913, 1980

  一般社団法人 日本物理学会

キーワード

• General Physics and Astronomy

詳細情報

• CRID: 1390282679160615168
• NII論文ID: 110001964993
• NII論文ID: 210000088543
• NII論文ID: 130003738053
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.48.1908
• BIBCODE: 1980JPSJ...48.1908M
• COI: 1:CAS:528:DyaL3cXkvVKltro%3D
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 2181982
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I2181982
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.48.1908
• 本文言語コード: en
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