Conductance fluctuations in mesoscopic normal-metal/superconductor samples

被引：17
|
作者：
Hecker, K [3 ]
Hegger, H
Altland, A
Fiegle, K
机构：
[1] UNIV COLOGNE,INST THEORET PHYS,D-50937 COLOGNE,GERMANY
[2] UNIV CAMBRIDGE,CAVENDISH LAB,CAMBRIDGE CB3 0HE,ENGLAND
[3] UNIV COLOGNE,INST PHYS 1,D-50937 COLOGNE,GERMANY
来源：
PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 08期
关键词：
D O I：
10.1103/PhysRevLett.79.1547
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the magnetoconductance fluctuations of mesoscopic normal-metal/superconductor (NS) samples consisting of a gold wire in contact with a niobium film. The magnetic field strength is varied over a wide range, including values that are larger than the upper critical field B-c2 of niobium. In agreement with recent theoretical predictions we find that in the NS sample the rms of the conductance fluctuations (CF) is by a factor of 2.8 +/- 0.4 larger than in the high field regime where the entire system is driven normal conducting. Further characteristics of the CF are discussed.
引用
收藏
页码：1547 / 1550
页数：4
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