Carrier-induced ferromagnetism in a diluted Hubbard model

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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 $\rm Ga_{1-x} Mn_x N$.
8 pages, 10 figures

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/25803

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0502085
 http://arxiv.org/abs/cond-mat/0502085

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arXiv