Carrier-induced ferromagnetism in a diluted Hubbard model

Details Carrier-induced ferromagnetism in a diluted Hubbard model Carrier-induced ferromagnetism in a diluted Hubbard model

2005-02-03

arxiv.org/abs/cond-mat/0502085v1

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 10 figures

Scientific paper

Carrier-induced ferromagnetism is investigated in a diluted Hubbard model for ordered impurity arrangements. The delicate competition between particle-hole processes contributing to the spin couplings results in a rich variety of behaviour. The ferromagnetic transition temperature obtained within the spin-fluctuation theory is in good agreement with reported values for $\rm Ga_{1-x} Mn_x N$.

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