Reorientation Transition in Single-Domain (Ga,Mn)As

Details Reorientation Transition in Single-Domain (Ga,Mn)As Reorientation Transition in Single-Domain (Ga,Mn)As

2005-07-07

arxiv.org/abs/cond-mat/0507187v1

Phys. Rev Lett. 95, 217204 (2005)

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.95.217204

We demonstrate that the interplay of in-plane biaxial and uniaxial anisotropy fields in (Ga,Mn)As results in a magnetization reorientation transition and an anisotropic AC susceptibility which is fully consistent with a simple single domain model. The uniaxial and biaxial anisotropy constants vary respectively as the square and fourth power of the spontaneous magnetization across the whole temperature range up to T_C. The weakening of the anisotropy at the transition may be of technological importance for applications involving thermally-assisted magnetization switching.

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