Decrease of nonlinearity and linewidth narrowing in spin-transfer oscillators under the external field applied near the hard axis

K. Mizushima, T. Nagasawa, K. Kudo, Y. Saito, R. Sato

研究成果: Article査読

24 被引用数 (Scopus)

抄録

Angular dependence of power spectra is measured for tunnel-type spin-transfer oscillators by changing the direction of the external field in the plane. The oscillation frequency shows the red shift with increasing the current in the case that the field directions are away from the hard axis of the free layer. The frequency shift changes from red to blue at a specific direction near the hard axis, where the linewidth is much reduced. These results are explained by taking into account the nonlinearity arising from the in-plane anisotropy as well as that arising from the demagnetizing effect.

本文言語English
論文番号152501
ジャーナルApplied Physics Letters
94
15
DOI
出版ステータスPublished - 2009 4 27
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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