Finite-temperature properties of the Hubbard chain with bond-charge interaction

Item Type: Article
MIUR type: Article > Journal article
Title: Finite-temperature properties of the Hubbard chain with bond-charge interaction
Authors string: Dolcini F.; Montorsi A.
University authors:
Journal or Publication Title: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS
Referee type: Not specified type
Publisher: APS
Volume: 66
Page Range: 075112-075112
Number of Pages: 5
ISSN: 1098-0121
Abstract: We investigate the one-dimensional (1D) Hubbard model with an additional bond-charge interaction, recently considered in the description of compounds that exhibit strong 1D features above the temperature of ordered phases. The partition function of the model is exactly calculated for a value of the bond-charge coupling; the behavior of the specific heat and spin susceptibility as a function of temperature is derived at arbitrary filling, and particularly discussed across the occurring metal-insulator transition. The results show that the bond-charge terms weaken the spin excitations of the system
Date: 2002
Status: Published
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Uncontrolled Keywords:
Departments (original): DIFIS - Physics
Departments: DISAT - Department of Applied Science and Technology
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    Subjects: Area 02 - Scienze fisiche > FISICA TEORICA, MODELLI E METODI MATEMATICI
    Date Deposited: 18 Jan 2008 12:01
    Last Modified: 16 Oct 2013 01:16
    Id Number (DOI): 10.1103/PhysRevB.66.075112
    Permalink: http://porto.polito.it/id/eprint/1402809
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