Magnon-assisted Andreev reflection in a ferromagnet-superconductor junction

被引：9

作者：

McCann, E ^{[1
]}

Fal'ko, VI ^{[1
]}

机构：

[1] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England

来源：

EUROPHYSICS LETTERS | 2001年 / 56卷 / 04期

关键词：

D O I：

10.1209/epl/i2001-00560-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new mechanism for inelastic Andreev reflection at a ferromagnetic metal-superconductor interface is proposed, which consists of the simultaneous injection of a Cooper pair from the superconductor and the emission of a magnon inside the ferromagnet. We nd that this process generates an additional contribution to the subgap non-linear I(V) characteristics, which is asymmetric with respect to the sign of the bias voltage and is related to the density of states of magnons in the ferromagnet.

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页码：583 / 589

页数：7

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