Reentrance effect in normal-metal/superconducting hybrid loops

被引：13

作者：

Chien, CJ ^{[1
]}

Chandrasekhar, V ^{[1
]}

机构：

[1] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 22期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.60.15356

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have measured the transport properties of two mesoscopic hybrid loops composed of a normal-metal arm and a superconducting arm. The samples differed in the transmittance of the normal/superconducting interfaces. While the low-transmittance sample showed monotonic behavior in the low-temperature resistance, magnetoresistance, and differential resistance, the high-transmittance sample showed reentrant behavior in all three measurements. This reentrant behavior is due to coherent Andreev reflection at the normal/superconducting interfaces. We compare the reentrance effect for the three different measurements and discuss the results based on the theory of quasiclassical Green's functions. [S0163-1829(99)02745-9].

引用

页码：15356 / 15363

页数：8

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