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

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.

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

References in corpus (2)

• Scattering by impurity-induced order parameter ``holes'' in d-wave superconductors
• Resonant states and order-parameter suppression near point-like impurities in d-wave superconductors

Cited by in corpus (5)

• Defects in correlated metals and superconductors
• Two impurities in a d-wave superconductor:local density of states
• Pairing fluctuation theory of high $T_c$ superconductivity in the presence of nonmagnetic impurities
• Effective pairing theory for strongly correlated d-wave superconductors
• Extinction of impurity resonances in large-gap regions of inhomogeneous d-wave superconductors