Effect of Order-Parameter Suppression on Scattering by Isolated Impurities in Asymmetric Bands

Details Effect of Order-Parameter Suppression on Scattering by Isolated Impurities in Asymmetric Bands Effect of Order-Parameter Suppression on Scattering by Isolated Impurities in Asymmetric Bands

1999-12-09

arxiv.org/abs/cond-mat/9912158v1

Physics

Condensed Matter

Superconductivity

2 pages, 1 figure, proceedings for M2S-HTSC-VI

Scientific paper

10.1016/S0921-4534(00)00937-0

The single-impurity problem in d-wave superconductors with asymmetric bands
is discussed. The effect of local order parameter suppression near the impurity
is to shift the quasiparticle resonance. Contrary to previous work [A. Shnirman
et al., Phys. Rev. B 60, 7517 (1999)] we find that the direction of the shift
is not universally towards the strong scattering limit.

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