Ground state energy of metallic ferromagnet in a generalized Hubbard model

Details Ground state energy of metallic ferromagnet in a generalized Hubbard model Ground state energy of metallic ferromagnet in a generalized Hubbard model

2000-12-21

arxiv.org/abs/cond-mat/0012402v1

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 11 eps figures

Scientific paper

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.

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