Tuning the ferromagnetic properties of hydrogenated GaMnAs

Details Tuning the ferromagnetic properties of hydrogenated GaMnAs Tuning the ferromagnetic properties of hydrogenated GaMnAs

2005-04-15

arxiv.org/abs/cond-mat/0504387v2

Applied Physics Letters 87 (2005) 182506

Physics

Condensed Matter

Materials Science

Scientific paper

10.1063/1.2126147

Hydrogenation and posthydrogenation annealings have been used as a very efficient tool to tune the hole density over a wide range, at fixed magnetic moment concentration, in thin GaMnAs layers. Reduction of the hole density resulted in strong modifications of their ferromagnetic properties. In particular, we observed in magnetotransport experiments the decrease of the Curie temperature, along with modifications of the magnetic anisotropy, a behavior consistent with the mean-field theory.

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