WEAK-LOCALIZATION COEXISTING WITH A MAGNETIC-FIELD IN A NORMAL-METAL-SUPERCONDUCTOR MICROBRIDGE

被引：28

作者：

BROUWER, PW

BEENAKKER, CWJ

机构：

[1] Instituut-Lorentz, University of Leiden, 2300 RA Leiden

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.52.R3868

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A random-matrix theory is presented which shows that breaking time-reversal symmetry by itself does not suppress the weak-localization correction to the conductance of a disordered metal wire attached to a superconductor. Suppression of weak localization requires applying a magnetic field as well as raising the voltage, to break both time-reversal symmetry and electron-hole degeneracy. A magnetic-field-dependent contact resistance obscured this anomaly in previous numerical simulations.

引用

收藏

页码：R3868 / R3871

页数：4

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