Hole–hole correlation effects on magnetic properties of MnxIII1−xV diluted magnetic semiconductors

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.