Local properties in the two-dimensional t-t'-U model

Details Local properties in the two-dimensional t-t'-U model Local properties in the two-dimensional t-t'-U model

1997-05-05

arxiv.org/abs/cond-mat/9705033v1

Physica B 230-232, 912 (1997)

Physics

Condensed Matter

Strongly Correlated Electrons

3 pages, 3 figures in one Postscript file, RevTeX, to be published in Physica B

Scientific paper

10.1016/S0921-4526(96)00674-6

We have studied the t-t'-U model by means of the composite operator method. The effect of the bare diagonal hopping term t' that appears to be material dependent for high-Tc cuprate superconductors is analyzed in detail. In particular, some local quantities are computed and a comprehensive comparison with the data by numerical simulations on finite size lattices is presented. The result show a good agreement with those obtained by Monte Carlo methods.

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