Negative magnetoresistance in Andreev interferometers

被引：17

作者：

Belzig, W

Shaikhaidarov, R

Petrashov, VV

Nazarov, YV

机构：

[1] Univ Basel, Dept Phys & Astron, CH-4056 Basel, Switzerland

[2] Univ London, Royal Holloway, Dept Phys, Egham TW20 0EX, Surrey, England

[3] Delft Univ Technol, Dept Appl Phys, NL-2628 CJ Delft, Netherlands

来源：

PHYSICAL REVIEW B | 2002年 / 66卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.66.220505

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We consider transport in a diffusive cross-shaped Andreev interferometer geometry, both theoretically and experimentally. A strong and unexpected modulation of the conductance with the superconducting phase is found. In particular, a reversed resistance vs phase difference is predicted, where the resistance is decreased by a phase gradient. A comparison of our quasiclassical calculation with experimental data shows quantitative agreement if we account for diamagnetic screening.

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页码：1 / 4

页数：4

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