Injection locking of single-vortex and double-vortex spin-torque oscillators

被引：0

作者：

Buergler, Daniel E. ^{[1
]}

Sluka, Volker ^{[1
]}

Lehndorff, Ronald ^{[1
]}

Deac, Alina M. ^{[1
]}

Kakay, Attila ^{[1
]}

Hertel, Riccardo ^{[2
]}

Schneider, Claus M. ^{[1
]}

机构：

[1] Forschungszentrum Julich, Peter Grunberg Inst, Elect Properties PGI 6, D-52425 Julich, Germany

[2] Univ Strasbourg, Inst Phys & Chim Maeriaux Strasbourg, CNRS UMR 7504, F-67034 Strasbourg, France

来源：

SPINTRONICS IV | 2011年 / 8100卷

关键词：

Spin-transfer torque; vortex oscillator; injection locking; PHASE-LOCKING; DRIVEN;

D O I：

10.1117/12.892395

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Spin-torque oscillators are a promising application for the spin-transfer torque effect. The major challenge lies in pushing their microwave output power to useful levels, e. g. by operating an array of spin-torque oscillators in a synchronized, phase-locked mode. Our experiments on metallic, GMR-type nanopillars focus on the influence of external high-frequency signals on the current-driven vortex dynamics in single-vortex and double-vortex spintorque oscillators. For both cases we observe injection locking behavior according to the nonlinear oscillator theory, which is a prerequisite for the synchronization of spin-torque oscillators via microwaves in common electrical electrodes.

引用

页数：9

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