Electrical detection of microwave assisted magnetization reversal by spin pumping

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

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

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.

Original languageEnglish
Article number122406
JournalApplied Physics Letters
Volume104
Issue number12
DOIs
Publication statusPublished - 2014 Mar 24
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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