Spin torque and critical currents for magnetic vortex nano-oscillator in nanopillars

被引：30

作者：

Guslienko, K. Y. ^{[1
]}

Aranda, G. R.

Gonzalez, J. ^{[1
]}

机构：

[1] Univ Basque Country, Dpto Fis Mat, Donostia San Sebastian 20018, Spain

来源：

INTERNATIONAL CONFERENCE ON TRENDS IN SPINTRONICS AND NANOMAGNETISM (TSN 2010) | 2011年 / 292卷

关键词：

POLARIZED CURRENT; DRIVEN; MULTILAYERS; DYNAMICS;

D O I：

10.1088/1742-6596/292/1/012006

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We calculated the main dynamic parameters of the spin polarized current induced magnetic vortex oscillations in nanopillars, such as the range of current density, where vortex steady oscillations exist, the oscillation frequency and orbit radius. We accounted for both the non-linear vortex frequency and non-linear vortex damping. To describe the vortex excitations by the spin polarized current we used a generalized Thiele approach to motion of the vortex core as a collective coordinate. All the calculation results are represented via the free layer sizes, saturation magnetization, and the Gilbert damping. Predictions of the developed model can be checked experimentally.

引用

页数：5

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