Insulator-superconductor transition in 3D granular Al-Ge films

被引：136
|
作者：
Gerber, A
Milner, A
Deutscher, G
Karpovsky, M
Gladkikh, A
机构：
[1] Raymond and Beverly Sackler Faculty of Exact Sciences, School of Physics and Astronomy, Tel Aviv University, Tel Aviv, 69978, Ramat Aviv
来源：
PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 22期
关键词：
D O I：
10.1103/PhysRevLett.78.4277
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report the results of high magnetic field study of granular 3D Al-Ge and demonstrate that intragranular superconductivity leads in truly insulating samples (with an exponentially diverging normal state resistivity), either to a global superconducting phase coherent state, or to a ''superconductor-insulator'' state with Cooper pairs totally localized within individual grains, depending on the strength of the intergranular Josephson coupling.
引用
收藏
页码：4277 / 4280
页数：4
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