Stripes and superconducting pairing in the t-J model with Coulomb interactions
Strongly Correlated Electrons
2009-10-31 v7 Superconductivity
Abstract
We study the competition between long- and short-range interactions among charge carriers in strongly-correlated electronic systems employing a new method which combines the density-matrix renormalization-group technique with a self-consistent treatment of the long-range interactions. We apply the method to an extended t-J model which exhibits ``stripe'' order. The Coulomb interactions, while not destroying stripes, induce large transverse stripe fluctuations with associated charge delocalization. This leads to a substantial Coulomb-repulsion-induced {\it enhancement} of long-range superconducting pair-field correlations.
Keywords
Cite
@article{arxiv.cond-mat/0012293,
title = {Stripes and superconducting pairing in the t-J model with Coulomb interactions},
author = {E. Arrigoni and A. P. Harju and W. Hanke and B. Brendel and S. A. Kivelson},
journal= {arXiv preprint arXiv:cond-mat/0012293},
year = {2009}
}
Comments
Appendix included