Reexamination of d-wave superconductivity in the two-dimensional Hubbard model
Strongly Correlated Electrons
2007-05-23 v1 Superconductivity
Abstract
We reexamine the possibility of d-wave superconductivity in the hole-doped two-dimensional Hubbard model. In terms of the gauge field description of the spin fluctuations, we show that d-wave superconductivity is unstable in the perturbative region with respect to the on-site Coulomb repulsion, U. Whereas in the region where d-wave superconductivity is possible, there is a strong constraint on the gap of superconductivity. Analysis of the localized spin moments suggests that there is another d-wave (d_{x^2-y^2}-wave) pairing due to the short-range antiferromagnetic correlation.
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Cite
@article{arxiv.cond-mat/0201058,
title = {Reexamination of d-wave superconductivity in the two-dimensional Hubbard model},
author = {Takao Morinari},
journal= {arXiv preprint arXiv:cond-mat/0201058},
year = {2007}
}
Comments
5 pages, 1 figure