Pairing Mechanism in Two Hubbard Models that Show d_{x^2-y^2} Pairing
Abstract
Here we examine various aspects of the pairing mechanism for two models, the two-dimensional and two-leg ladder Hubbard models. Both of these models exhibit pairing correlations with d_{x^2-y^2} symmetry. However, the undoped insulating states of these two systems are different with the two-dimensional lattice characterized by a ground state with long-range antiferromagnetic order and the two-leg ladder having a spin gap in its ground state. Our aim is to gain a better understanding of the underlying pairing mechanism which causes d_{x^2-y^2} pairing in these two models.
Keywords
Cite
@article{arxiv.cond-mat/9606218,
title = {Pairing Mechanism in Two Hubbard Models that Show d_{x^2-y^2} Pairing},
author = {D. J. Scalapino},
journal= {arXiv preprint arXiv:cond-mat/9606218},
year = {2007}
}
Comments
Latex, uses lprocldpf and epsf, 16 pages and 19 figures, to be published in the proceedings of the BICAS Summer School on "Symmetry of the Order Parameter in High-Temperature Superconductors" held in Ankara on June 17-22, 1996