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.

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页码：1547 / 1550

页数：4

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