Theory of I-V characteristics of magnetic Josephson junctions

被引：2

作者：

Yang, Shengyuan A. ^{[1
]}

Niu, Qian ^{[1
]}

Pesin, D. A. ^{[1
]}

MacDonald, A. H. ^{[1
]}

机构：

[1] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 18期

基金：

美国国家科学基金会;

关键词：

ROOM-TEMPERATURE; ELECTRIC-CURRENT; MAGNETORESISTANCE; MULTILAYER; EXCITATION; FILMS;

D O I：

10.1103/PhysRevB.82.184402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We analyze the electrical characteristics of a circuit consisting of a free thin-film magnetic layer and source and drain electrodes that have opposite magnetization orientations along the free magnet's two hard directions. We find that when the circuit's current exceeds a critical value there is a sudden resistance increase which can be large in relative terms if the currents to source or drain are strongly spin polarized and the free magnet is thin. This behavior can be partly understood in terms of a close analogy between the magnetic circuit and a Josephson junction.

引用

页数：5

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