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

W. A. Atkinson·P. J. Hirschfeld·A. H. MacDonald
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Abstract

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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W. A. Atkinson, P. J. Hirschfeld, A. H. MacDonald. 1999-12-09. Effect of Order-Parameter Suppression on Scattering by Isolated Impurities in Asymmetric Bands. https://doi.org/10.1016/s0921-4534(00)00937-0

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