Spin-accumulation-induced resistance in mesoscopic ferromagnet-superconductor junctions

被引：83

作者：

Jedema, FJ

van Wees, BJ

Hoving, BH

Filip, AT

Klapwijk, TM

机构：

[1] Univ Groningen, Dept Appl Phys, NL-9747 AG Groningen, Netherlands

[2] Univ Groningen, Ctr Mat Sci, NL-9747 AG Groningen, Netherlands

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.60.16549

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a description of spin-polarized transport in mesoscopic ferromagnet-superconductor (F/S) systems, where the transport is diffusive and the interfaces are transparent. It is shown that the spin reversal associated with Andreev reflection generates an excess spin density close to the FIS interface, which leads to a spin contact resistance. Expressions for the contact resistance are given for two-terminal and four-terminal geometries. In the latter the sign depends on the relative magnetization of the ferromagnetic electrodes. [S0163-1829(99)00640-2].

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页码：16549 / 16552

页数：4

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