A simple model for magnetism in itinerant electron systems

Andre M.C. Souza

Physica A: Statistical Mechanics and its Applications, 2007, vol. 375, issue 1, 221-226

Abstract: 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.

Keywords: Classical spin model; Lattice model; Magnetism (search for similar items in EconPapers)
Date: 2007
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:375:y:2007:i:1:p:221-226

DOI: 10.1016/j.physa.2006.02.051

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