Specific Heat of the 2D Hubbard Model

Details Specific Heat of the 2D Hubbard Model Specific Heat of the 2D Hubbard Model

1996-12-13

arxiv.org/abs/cond-mat/9612132v2

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, RevTex, 11 figures embedded in the text, Submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.55.12918

Quantum Monte Carlo results for the specific heat c of the two dimensional Hubbard model are presented. At half-filling it was observed that $c \sim T^2$ at very low temperatures. Two distinct features were also identified: a low temperature peak related to the spin degrees of freedom and a higher temperature broad peak related to the charge degrees of freedom. Away from half-filling the spin induced feature slowly disappears as a function of hole doping while the charge feature moves to lower temperature. A comparison with experimental results for the high temperature cuprates is discussed.

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