Current-induced nanomagnet dynamics for magnetic fields perpendicular to the sample plane

被引：121

作者：

Kiselev, SI ^{[1
]}

Sankey, JC ^{[1
]}

Krivorotov, IN ^{[1
]}

Emley, NC ^{[1
]}

Rinkoski, M ^{[1
]}

Perez, C ^{[1
]}

Buhrman, RA ^{[1
]}

Ralph, DC ^{[1
]}

机构：

[1] Cornell Univ, Ithaca, NY 14853 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.93.036601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present electrical measurements of high-frequency magnetic dynamics excited by spin-polarized currents in Co/Cu/Ni80Fe20 nanopillar devices, with a magnetic field applied perpendicular to the sample layers. As a function of current and magnetic field, the dynamical phase diagram contains several distinguishable precessional modes and also static magnetic states. Using detailed comparisons with numerical simulations, we provide rigorous tests of the theory of spin-transfer torques.

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页码：036601 / 1

页数：4

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