自旋极化电流驱动纳米磁体磁化的动态激励

INTERMAG 2006 - IEEE International Magnetics Conference Pub Date : 2006-05-08 DOI:10.1109/INTMAG.2006.375412

I. Krivorotov, N. Emley, J. Sankey, D. Ralph, R. Buhrman

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引用次数: 1

摘要

注入金属纳米磁体的自旋极化电子电流对磁化产生转矩，并可激发磁化自振荡。本工作的目的是研究这类激励的谱和瞬态特性。我们研究了坡莫合金(Py)椭圆纳米磁体中的电流驱动激励。我们还使用存储示波器对电流驱动激励产生的交流电压进行了时间分辨测量。

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Dynamic excitations of nanomagnet magnetization driven by spin-polarized current

A current of spin-polarized electrons injected into a metallic nanomagnet exerts torque on the magnetization and may excite magnetization autooscillations. The aim of present work is to study spectral and transient properties of such excitations. We study current-driven excitations in a permalloy (Py) elliptical nanomagnet. We also make time-resolved measurements of the ac voltage generated by the current-driven excitations using a storage oscilloscope.

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INTERMAG 2006 - IEEE International Magnetics Conference

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