Some Low-Temperature Properties of a Generalized Hubbard Model with Correlated Hopping

Details Some Low-Temperature Properties of a Generalized Hubbard Model with Correlated Hopping Some Low-Temperature Properties of a Generalized Hubbard Model with Correlated Hopping

2000-08-25

arxiv.org/abs/cond-mat/0008378v1

Physica B, vol. 284-288, p.1537-1538 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages, LaTex2e using Elsevier style, presented at LT22 Conference, Helsinki, August 1999

Scientific paper

10.1016/S0921-4526(99)02763-5

In the present paper we study some correlation effects in a generalized Hubbard model with correlated hopping within low-temperature region using a generalized mean-field approximation. It is shown that in a series of cases the model leads to consequences deviating essentially from those of the Hubbard model. We consider the possibility of applying the result to interpret the peculiarities of physical properties of systems with narrow energy bands.

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