Dimensional Crossover in the Nb/Al_2O_3 Josephson-Coupled Multilayers
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概要
- 論文の詳細を見る
The dimensional crossover from anisotropic three-dimensional to two-dimensional behavior in the temperature dependence of the parallel critical field has been studied for Nb/Al_2O_3 superconductive multilayers as a function of the structural modulation wavelength λ. The thicknesses of the superconductive Nb sublayer (dNb) and the Al_2O_3 tunneling barrier sublayer (dAl_2O_3) were varied up to 100Å. In accord with the calculation due to Deutscher and Entin-Wohlman, the crossover occurs in the vicinity of T^*, where the perpendicular coherence length ζ_⊥(T) satisfies the relation, 1. 4ζ_⊥(T^*)=λ, irrespective of the ratio λ/dNb.
- 社団法人日本物理学会の論文
- 1993-10-15
著者
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Fujimori H
Tohoku Univ. Sendai
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FUJISHIRO Hiroyuki
Faculty of Engineering, Iwate University
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IKEBE Manabu
Faculty of Engineering, Iwate University
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Fujishiro H
Faculty Of Engineering Iwate University
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Ikebe M
Faculty Of Engineering Iwate University
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Ikebe Manabu
Department Of Materials Science And Technology Faculty Of Engineering Iwate University
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Yoshihisa Obi
Institute For Materials Research Tohoku University
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Obi Yoshihisa
Institute For Materials Research
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Fujimori H
Res. Inst. Electric And Magnetic Materials Sendai Jpn
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Fujishiro Hiroyuki
Department Of Materials Science And Technology Faculty Of Engineering Iwate University
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Fujimori Hiroyasu
Institute For Material Research Tohoku University
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Obi Yoshihisa
Institute for Materials Research,Tohoku University
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