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Ground state energy of metallic ferromagnet in a generalized Hubbard model

L. Didukh·O. Kramar·Yu. Skorenkyy
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Abstract

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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L. Didukh, O. Kramar, Yu. Skorenkyy. 2000-12-21. Ground state energy of metallic ferromagnet in a generalized Hubbard model. https://arxiv.org/abs/cond-mat/0012402

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