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arXiv · 0807.0195

Insensitivity of superconductivity to disorder in the cuprates

A. F. Kemper·D. G. S. P. Doluweera·T. A. Maier·M. Jarrell·P. J. Hirschfeld·H-P. Cheng
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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.

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A. F. Kemper, D. G. S. P. Doluweera, T. A. Maier, M. Jarrell, P. J. Hirschfeld, H-P. Cheng. 2009-02-02. Insensitivity of superconductivity to disorder in the cuprates. https://doi.org/10.1103/physrevb.79.104502

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