Ground state energy of metallic ferromagnet in a generalized Hubbard model
Didukh, L. · Kramar, O. · Skorenkyy, Yu.
Original · EN
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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