Switching behaviors and its dynamics of a Co/Pt nanodot under the assistance of rf fields

Satoshi Okamoto, Nobuaki Kikuchi, Masaki Furuta, Osamu Kitakami, Takehito Shimatsu

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)

Abstract

We have studied the switching behavior of a single Co/Pt multilayer dot under the assistance of rf fields. The switching field monotonically decreases with increasing rf frequency up to a critical frequency. It is found that the reduction of the switching field is more significant than the theoretical prediction based on the single macrospin model. In addition, switching field distribution due to thermal fluctuation is also considerably suppressed. The simulation has revealed that these drastic changes are caused by excitation of large amplitude spin waves in the dot.

Original languageEnglish
Article number237209
JournalPhysical review letters
Volume109
Issue number23
DOIs
Publication statusPublished - 2012 Dec 5

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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