Ground state energy of metallic ferromagnet in a generalized Hubbard model

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In the present work ferromagnetic ordering in the Hubbard model generalized by taking into account the inter-atomic exchange interaction and correlated hopping in partially filled narrow band is considered. In the case of weak electron-electron interaction the ground state energy and condition of ferromagnetic state realization are found using the Green function technique. The obtained results indicate the important role of correlated hopping.
9 pages, 11 eps figures

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/17175

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0012402
 http://arxiv.org/abs/cond-mat/0012402

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arXiv