d_{x^2-y^2} Symmetry and the Pairing Mechanism
Condensed Matter
2009-10-28 v1
Abstract
An important question is if the gap in the high temperature cuprates has d_{x^2-y^2} symmetry, what does that tell us about the underlying interaction responsible for pairing. Here we explore this by determining how three different types of electron-phonon interactions affect the d_{x^2-y^2} pairing found within an RPA treatment of the 2D Hubbard model. These results imply that interactions which become more positive as the momentum transfer increases favor d_{x^2-y^2} pairing in a nearly half-filled band.
Cite
@article{arxiv.cond-mat/9609131,
title = {d_{x^2-y^2} Symmetry and the Pairing Mechanism},
author = {N. Bulut and D. J. Scalapino},
journal= {arXiv preprint arXiv:cond-mat/9609131},
year = {2009}
}
Comments
9 pages and 2 eps figs, uses revtex with epsf, in press, PRB