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

被引：57

作者：

Atxitia, U. ^{[1
]}

Ostler, T. ^{[1
]}

Barker, J. ^{[1
]}

Evans, R. F. L. ^{[1
]}

Chantrell, R. W. ^{[1
]}

Chubykalo-Fesenko, O. ^{[2
]}

机构：

[1] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

[2] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

来源：

PHYSICAL REVIEW B | 2013年 / 87卷 / 22期

关键词：

REVERSAL;

D O I：

10.1103/PhysRevB.87.224417

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 in the transition metal. This dynamical path leads to the transfer of the angular momentum to the rare earth metal and magnetization switching with subsequent ultrafast precession caused by the intersublattice exchange field on the atomic scale.

引用

页数：4

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