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arXiv · 1404.1133

Electrical detection of microwave assisted magnetization reversal by spin pumping

Siddharth Rao·Sankha Subhra Mukherjee·Mehrdad Elyasi·Charanjit Singh Bhatia·Hyunsoo Yang
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Abstract

Microwave assisted magnetization reversal has been investigated in a bilayer system of Pt/ferromagnet by detecting a change in the polarity of the spin pumping signal. The reversal process is studied in two material systems, Pt/CoFeB and Pt/NiFe, for different aspect ratios. The onset of the switching behavior is indicated by a sharp transition in the spin pumping voltage. At a threshold value of the external field, the switching process changes from partial to full reversal with increasing microwave power. The proposed method provides a simple way to detect microwave assisted magnetization reversal.

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Siddharth Rao, Sankha Subhra Mukherjee, Mehrdad Elyasi, Charanjit Singh Bhatia, Hyunsoo Yang. 2014-04-04. Electrical detection of microwave assisted magnetization reversal by spin pumping. https://doi.org/10.1063/1.4869488

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