Enhanced pairing in doped quantum magnets with frustrating hole motion
Strongly Correlated Electrons
2007-05-23 v2 Superconductivity
Abstract
Evidence for strong pairing at arbitrary small J/t is provided in a t-J model on the checkerboard lattice for the sign of hopping leading to frustration in hole motion. Destructive quantum interferences suppress Nagaoka ferromagnetism when J->0 and reduce drastically coherent hole motion in the fluctuating singlet background. It is shown that, by pairing in various orbital symmetry channels, holes can benefit from a large gain of kinetic energy.
Keywords
Cite
@article{arxiv.cond-mat/0404418,
title = {Enhanced pairing in doped quantum magnets with frustrating hole motion},
author = {Didier Poilblanc},
journal= {arXiv preprint arXiv:cond-mat/0404418},
year = {2007}
}
Comments
4 pages, 6 figures Important changes in manuscript & figures