Tunnel barrier enhanced voltage signal generated by magnetization precession of a single ferromagnetic layer

被引：45

作者：

Moriyama, T. ^{[1
]}

Cao, R. ^{[1
]}

Fan, X. ^{[1
]}

Xuan, G. ^{[2
]}

Nikolic, B. K. ^{[1
]}

Tserkovnyak, Y. ^{[3
]}

Kolodzey, J. ^{[2
]}

Xiao, John Q. ^{[1
]}

机构：

[1] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA

[2] Univ Delaware, Dept Elect & Comp Engn, Newark, DE 19716 USA

[3] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.100.067602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the electrical detection of magnetization dynamics in an Al/AlO(x)/Ni(80)Fe(20)/Cu tunnel junction, where a Ni(80)Fe(20) ferromagnetic layer is brought into precession under ferromagnetic resonance conditions. The dc voltage generated across the junction by the precessing ferromagnet is enhanced about an order of magnitude compared to the voltage signal observed when the contacts in this type of multilayered structure are Ohmic. We discuss the relation of this phenomenon to magnetic spin pumping and speculate on other possible underlying mechanisms responsible for the enhanced electrical signal.

引用

页数：4

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