UNIVERSAL LIMIT OF CRITICAL-CURRENT FLUCTUATIONS IN MESOSCOPIC JOSEPHSON-JUNCTIONS

被引：538

作者：

BEENAKKER, CWJ

机构：

[1] UNIV CALIF SANTA BARBARA, INST THEORET PHYS, SANTA BARBARA, CA 93106 USA

[2] LEIDEN UNIV, INST LORENTZ, 2300 RA LEIDEN, NETHERLANDS

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 27期

关键词：

D O I：

10.1103/PhysRevLett.67.3836

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The sample-to-sample fluctuations in the critical current of a disordered Josephson junction are analyzed by means of a transmission-matrix formalism. If the junction becomes small compared to the superconducting coherence length, the fluctuations at T = 0 become of order e-DELTA-0/HBAR, dependent only on the energy gap DELTA-0 of the bulk superconductors and independent of junction length or mean free path. This universal limit is reached in weak links formed from point contacts or microbridges.

引用

页码：3836 / 3839

页数：4

共 23 条

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