Numerical Study of the Pairing Correlation of the t-J Type Models

Details Numerical Study of the Pairing Correlation of the t-J Type Models Numerical Study of the Pairing Correlation of the t-J Type Models

1999-10-07

arxiv.org/abs/cond-mat/9910107v2

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 4 figures

Scientific paper

We reported that the pair-pair correlation function of the two-dimensional t-J model does not have long-range d-wave superconducting correlations in the interesting parameter range of $J/t \leq 0.5$. The power-Lanczos method is used under the assumption of monotonic behavior. This assumption has been well checked in the two-dimensional t-J and attractive Hubbard model. Here we re-examine this criterion of monotonic behavior of the pairing correlation function for the one-dimensional and two-leg t-J ladder where other accurate numerical results are available. The method seems to be working well.

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