On Chemical Potential of a Generalized Hubbard Model with Correlated Hopping at Half-Filling

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dc.creatorDidukh, Leonid
dc.creatorHankevych, Vasyl
dc.date1999-10-06
dc.date.accessioned2026-07-07T03:14:44Z
dc.date.available2026-07-07T03:14:44Z
dc.descriptionIn the present paper we study chemical potential of a generalized Hubbard model with correlated hopping at half-filling using a generalized mean-field approximation. For the special case of the model the approach reproduces the exact results: metal-insulator transition, ground state energy. Chemical potential of generelized Hubbard model with correlated hoppig as function of hopping integrals at zero temperature is found. It is shown that chemical potential of the model is temperature-dependent. The dependences of chemical potential of a generalized Hubbard model with correlated hopping on the model parameters are different in metallic and insulating phases leading to a kink at the point of metal-insulator transition in the ground state. With the increase of temperature the kink in the chemical potential curve disappears. The obtained results differ from those of the Hubbard model indicating the important role of correlated hopping.
dc.description7 pages, 3 eps figures, Latex 2.09, submitted to Eur. Phys. Journ. B
dc.identifierhttps://arxiv.org/abs/cond-mat/9910068
dc.identifierhttp://arxiv.org/abs/cond-mat/9910068
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/29788
dc.subjectStrongly Correlated Electrons
dc.titleOn Chemical Potential of a Generalized Hubbard Model with Correlated Hopping at Half-Filling
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