Thermodynamic properties of a two-site Hubbard model with orbital degeneracy

Exact numerical solutions are obtained for a two-site doubly degenerate Hubbard model with 2, 3 or 4 electrons to study the effect of intra-atomic exchange interaction on the ground state and the thermodynamic properties. Some properties of macroscopic systems are reproduced qualitatively. The condition of having the Hamiltonian rotationally invariant in spin space gets important with increasing electron density.

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Year of publication:	1979
Authors:	Spałek, J. ; Oleś, A.M. ; Chao, K.A.
Published in:	Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 97.1979, 3, p. 552-564
Publisher:	Elsevier

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Type of publication:	Article
Source:	RePEc - Research Papers in Economics

Persistent link: https://ebvufind01.dmz1.zbw.eu/10011064568