Current-induced control of spin-wave attenuation

Soo Man Seo, Kyoung Jin Lee, Hyunsoo Yang, Teruo Ono

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Abstract

The current-induced modification of the attenuation of a propagating spin wave in a magnetic nanowire is studied theoretically and numerically. The attenuation length of spin wave can increase when the spin waves and electrons move in the same direction. It is directly affected by the nonadiabaticity of the spin-transfer torque and thus can be used to estimate the nonadiabaticity. When the nonadiabatic spin torque is sufficiently large, the attenuation length becomes negative, resulting in the amplification of spin waves.

Original languageEnglish
Article number147202
JournalPhysical Review Letters
Volume102
Issue number14
DOIs
Publication statusPublished - 2009 Apr 6

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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