Phys. Rev. B 75, 045204 (2007) [5 pages]Diluted magnetic semiconductors with correlated impurities: Mean-field theory with RKKY interactionReceived 18 August 2006; revised 31 October 2006; published 17 January 2007 In the framework of the generalized mean-field theory, the influence of correlating impurities in diluted magnetic semiconductors with indirect RKKY interaction is studied. It is shown that there is the limited range of impurity concentrations x where ferromagnetic ordering is possible and clustering shifts that interval to lower x values. The Curie temperature is a nonmonotone function of x, peaks at x∼0.1, and its maximum value is slightly influenced by the clustering. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.75.045204
DOI:
10.1103/PhysRevB.75.045204
PACS:
75.50.Pp, 75.10.Nr, 75.30.Hx
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