Ultrafast dynamical path for the switching of a ferrimagnet after femtosecond heating release_qipmz5eabfhwnngw6xoqy5by2m

by U. Atxitia, T. Ostler, J. Barker, R. F. L. Evans, R. W. Chantrell and O. Chubykalo-Fesenko

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2012  

Abstract

Ultrafast laser-induced magnetic switching in rare earth, transition metal ferrimagnetic alloys has recently been reported to occur by ultrafast heating alone. Using atomistic simulations and a ferrimagnetic Landau-Lifshitz-Bloch formalism, we demonstrate that for switching to occur it is necessary that angular momentum is transferred from the longitudinal to transverse magnetization components. This dynamical path leads to magnetization switching and subsequent ultrafast precession caused by the inter-sublattice exchange field on the nanoscale.
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Date   2012-07-17
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arXiv  1207.4092v1
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