Superconducting gap for a 2-leg t-J ladder
Strongly Correlated Electrons
2009-11-10 v1
Abstract
Single-particle diagonal and off-diagonal Green's functions of a 2-leg t-J ladder at 1/8-doping are investigated by Exact Diagonalisations techniques. A numerically tractable expression for the superconducting gap is proposed and the frequency dependence of the real and imaginary parts of the gap are determined. The role of the low-energy gapped spin modes whose energies are computed by a (one-step) Contractor Renormalization procedure are discussed.
Cite
@article{arxiv.cond-mat/0303605,
title = {Superconducting gap for a 2-leg t-J ladder},
author = {Didier Poilblanc and D. J. Scalapino and Sylvain Capponi},
journal= {arXiv preprint arXiv:cond-mat/0303605},
year = {2009}
}
Comments
3 pages, 7 figures