Roles of nonequilibrium conduction electrons on the magnetization dynamics of ferromagnets

S. Zhang, Z. Li

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Abstract

The mutual dependence of spin-dependent conduction and magnetization dynamics of ferromagnets were studied in order to provide the key mechanisms in various spin-dependent phenomena. The response of the conduction electron spins in a spatial and time varying magnetization were computed in the time-dependent semiclassical transport theory. The induced nonequilibrium conduction spin density was shown to generate four spin torques acting on the magnetization, with each torque playing a different role in magnetization dynamics. It was also found that one of these torques is crucial for the interpretetion of experimental data on domain wall motion.

Original languageEnglish (US)
Pages (from-to)127204-1-127204-4
JournalPhysical review letters
Volume93
Issue number12
DOIs
StatePublished - Sep 17 2004

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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