Thermodynamic Properties of the One-dimensional Hubbard Model in the Uniform Limit

Authors

  • Francisco de Almeida
  • Claudio Andrade Macedo Departamento de Física, Universidade Federal de Sergipe, 49100-000 São Cristóvão, SE, Brasil

Keywords:

thermodynamic properties, strongly correlated electron systems, one-dimensional lattices

Abstract

In order to contribute to understand well the thermodynamic properties of strongly correlated electronsystems, we study numerically, in the grand canonical ensemble, the temperature dependence of theinternal energy, specific heat, entropy, magnetization, and magnetic susceptibility of the one-dimensionalHubbard model without transference of moment in the interactions. The results have been obtained for awide range of values of the on-site Coulombian repulsion U and of the external magnetic field h.Differences between this model and the original Hubbard model have been observed in relation to thenumber of peaks of the specific heat and to the behavior of the susceptibility in temperatures tending tozero. These differences evidence that the two models possess different magnetic structures of correlation.

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Published

2011-11-02

How to Cite

de Almeida, F., & Macedo, C. A. (2011). Thermodynamic Properties of the One-dimensional Hubbard Model in the Uniform Limit. Scientia Plena, 1(1). Retrieved from https://scientiaplena.emnuvens.com.br/sp/article/view/533

Issue

Vol. 1 No. 1 (2005): April/Abril 2005

Section

Articles

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