THERMODYNAMIC PROPERTIES OF THE ONE-DIMENSIONAL EXTENDED HUBBARD MODEL (Ⅱ)——U | Zendy

XU HUI | Zendy; Kaiyi Zhang | Zendy

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THERMODYNAMIC PROPERTIES OF THE ONE-DIMENSIONAL EXTENDED HUBBARD MODEL (Ⅱ)——U<0

Author(s) -

XU HUI,

Kaiyi Zhang

Publication year - 1985

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.34.1433

Subject(s) - hubbard model , physics , magnetic susceptibility , condensed matter physics , specific heat , electron , entropy (arrow of time) , limit (mathematics) , coupling (piping) , thermodynamics , materials science , quantum mechanics , superconductivity , mathematical analysis , mathematics , metallurgy

Entropy, internal energy, specific heat, and magnetic susceptibility of the one-dimensional negative-U extended Hubbard model are computed. An analytical solution of magnetic susceptibility in the strong-coupling (|U|→∞) limit is obtained. Therma-dynamic properties of the system can be discussed in two temperature regions. The high T-region corresponds to decrease in number of double occupied states. The low T-region corresponds to the distribution of electron charge. The effect of W on the-rmodynamic properties is obvious.

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