Insensitivity of superconductivity to disorder in the cuprates
Superconductivity
2009-09-24 v2 Strongly Correlated Electrons
Abstract
Using a dynamical cluster quantum Monte Carlo approximation, we investigate the effect of local disorder on the stability of d-wave superconductivity including the effect of electronic correlations in both particle-particle and particle-hole channels. With increasing impurity potential, we find an initial rise of the critical temperature due to an enhancement of anti-ferromagnetic spin correlations, followed by a decrease of Tc due to scattering from impurity-induced moments and ordinary pairbreaking. We discuss the weak initial dependence of Tc on impurity concentration found in comparison to experiments on cuprates.
Keywords
Cite
@article{arxiv.0807.0195,
title = {Insensitivity of superconductivity to disorder in the cuprates},
author = {A. F. Kemper and D. G. S. P. Doluweera and T. A. Maier and M. Jarrell and P. J. Hirschfeld and H-P. Cheng},
journal= {arXiv preprint arXiv:0807.0195},
year = {2009}
}