Noncollinear Ferromagnetism in (III,Mn)V Semiconductors
- 14 March 2002
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 88 (13) , 137201
- https://doi.org/10.1103/physrevlett.88.137201
Abstract
We investigate the stability of the collinear ferromagnetic state in kinetic exchange models for (III,Mn)V semiconductors with randomly distributed Mn ions. Our results suggest that noncollinear ferromagnetism is common to these semiconductor systems. The instability of the collinear state is due to long-range fluctuations involving a large fraction of the localized magnetic moments. We address conditions that favor the occurrence of noncollinear ground states and discuss unusual behavior that we predict for the temperature and field dependence of its saturation magnetization.Keywords
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