Spin-transfer-driven ferromagnetic resonance of individual nanomagnets

被引：325

作者：

Sankey, J. C. ^{[1
]}

Braganca, P. M. ^{[1
]}

Garcia, A. G. F. ^{[1
]}

Krivorotov, I. N. ^{[1
]}

Buhrman, R. A. ^{[1
]}

Ralph, D. C. ^{[1
]}

机构：

[1] Cornell Univ, Ithaca, NY 14853 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.96.227601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate a technique that enables ferromagnetic resonance measurements of the normal modes for magnetic excitations in individual nanoscale ferromagnets, smaller in volume by more than a factor of 50 compared to individual ferromagnetic samples measured by other resonance techniques. Studies of the resonance frequencies, amplitudes, linewidths, and line shapes as a function of microwave power, dc current, and magnetic field provide detailed new information about the exchange, damping, and spin-transfer torques that govern the dynamics in magnetic nanostructures.

引用

页数：4

共 28 条

[1] Emission of spin waves by a magnetic multilayer traversed by a current [J].