Spin-fluctuation exchange study of superconductivity in two- and three-dimensional single-band Hubbard models
Condensed Matter
2009-10-31 v2
Abstract
In order to identify the most favorable situation for superconductivity in the repulsive single-band Hubbard model, we have studied instabilities for d-wave pairing mediated by antiferromagnetic spin fluctuations and p-pairing mediated by ferromagnetic fluctuations with the fluctuation exchange approximation in both two dimensions and three dimensions. By systematically varying the band filling and band structure we have shown that (i) d-pairing is stronger in two dimensions than in three dimensions, and (ii) p-pairing is much weaker than the d-pairing.
Cite
@article{arxiv.cond-mat/9909119,
title = {Spin-fluctuation exchange study of superconductivity in two- and three-dimensional single-band Hubbard models},
author = {Ryotaro Arita and Kazuhiko Kuroki and Hideo Aoki},
journal= {arXiv preprint arXiv:cond-mat/9909119},
year = {2009}
}
Comments
RevTex, 5 figures in Postscript, to be published in Phys. Rev. B