Hole-hole correlation effects on magnetic properties of MnxIII1-xV diluted magnetic semiconductors
Abstract
The mean-field theory represents a useful starting point for studying carrier-induced ferromagnetism in MnxIII1-xV diluted magnetic semiconductors. A detail description of these systems requires to include correlations in the many-body hole system. We discuss the effects of correlations among itinerant carriers on magnetic properties of bulk MnxIII1-xV and magnetic semiconductor quantum wells. Presented results were obtained using parabolic band approximation and we also derive a many-body perturbation technique that allows to account for hole-hole correlations in realistic semiconductor valence bands.
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