A simple model for magnetism in itinerant electron systems

Details A simple model for magnetism in itinerant electron systems A simple model for magnetism in itinerant electron systems

2006-10-12

arxiv.org/abs/cond-mat/0610336v1

Physics

Condensed Matter

Statistical Mechanics

9 pages, 3 figures, to be published in Physica A

Scientific paper

10.1016/j.physa.2006.02.051

A new lattice model of interacting electrons is presented. It can be viewed as a classical Hubbard model in which the energy associated to electron itinerance is proportional to the total number of possible electron jumps. Symmetry properties of the Hubbard model are preserved. In the half-filled band with strong interaction the model becomes the Ising model. The main features of the magnetic behavior of the model in the one-dimensional and mean-field cases are studied.

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