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High-Temperature Thermodynamics of the Strongly Correlated Hubbard Model at Arbitrary Electron Density

High-Temperature Thermodynamics of the Strongly Correlated Hubbard Model at Arbitrary Electron... We consider the Hubbard model for electron correlations in solids in the narrow-band regime where the intra-atomic Coulomb repulsion is large compared to the bandwidth. A high-temperature pertubation expansion in the bandwidth is performed to lowest order for the grand partition function. This procedure is carried out both for one-dimensional systems, of interest for the tetracyanoquinodimethan (TCNQ) charge-transfer salts, and for a three-dimensional cubic lattice. Both the specific heat and magnetic susceptibility are computed as functions of temperature and electron density. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

High-Temperature Thermodynamics of the Strongly Correlated Hubbard Model at Arbitrary Electron Density

Physical Review B , Volume 8 (7) – Oct 1, 1973
9 pages

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Publisher
American Physical Society (APS)
Copyright
Copyright © 1973 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.8.3389
Publisher site
See Article on Publisher Site

Abstract

We consider the Hubbard model for electron correlations in solids in the narrow-band regime where the intra-atomic Coulomb repulsion is large compared to the bandwidth. A high-temperature pertubation expansion in the bandwidth is performed to lowest order for the grand partition function. This procedure is carried out both for one-dimensional systems, of interest for the tetracyanoquinodimethan (TCNQ) charge-transfer salts, and for a three-dimensional cubic lattice. Both the specific heat and magnetic susceptibility are computed as functions of temperature and electron density.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Oct 1, 1973

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