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arXiv · 1410.0441

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

Siddharth Rao·Jungbum Yoon·Jan Rhensius·Charanjit S. Bhatia·Hyunsoo Yang
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Abstract

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

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Siddharth Rao, Jungbum Yoon, Jan Rhensius, Charanjit S. Bhatia, Hyunsoo Yang. 2014-10-02. Spin wave non-reciprocity and beating in permalloy by time-resolved magneto-optical Kerr effect. https://doi.org/10.1088/0022-3727/47/38/385002

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