d-Wave Pairing Correlation in the Two-Dimensional t-J Model
C. T. Shih, Y. C. Chen, H. Q. Lin, T. K. Lee
Abstract
The pair-pair correlation function of the two-dimensional t-J model is studied by using the power-Lanczos method and an assumption of monotonic behavior. In comparison with the results of the ideal Fermi gas, we conclude that the 2D t-J model does not have long range d-wave superconducting correlation in the interesting parameter range of J/t ≤ 0.5. Implications of this result will also be discussed.
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