Spin wave non-reciprocity and beating in permalloy by the time-resolved magneto-optical Kerr effect

被引：2

作者：

Rao, Siddharth ^{[1
]}

Yoon, Jungbum

Rhensius, Jan

Bhatia, Charanjit S.

Yang, Hyunsoo

机构：

[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2014年 / 47卷 / 38期

基金：

新加坡国家研究基金会;

关键词：

spintronics; spin dynamics; Kerr effect; PHASE-LOCKING; MODES;

D O I：

10.1088/0022-3727/47/38/385002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We studied the propagation characteristics of spin wave modes in a permalloy stripe by time-resolved magneto-optical Kerr effect techniques. We observed a beating interference pattern in the time domain under the influence of an electrical square pulse excitation at the centre of the stripe. We also probed the non-reciprocal behaviour of propagating spin waves with a dependence on the external magnetic field. Spatial dependence studies showed that localized edge mode spin waves have a lower frequency than the spin waves at the centre of the stripe, due to the varying magnetization vector across the width of the stripe.

引用

页数：6

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