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Details of disorder matter in 2D d-wave superconductors
Atkinson1, Hirschfeld, MacDonald
1Department of Physics, University of Florida, P.O. Box 118440, Gainesville, Florida 32611, USA.
Abstract:
Within numerically exact solutions of the Bogoliubov-de Gennes equations, we demonstrate that discrepancies between predicted low-energy quasiparticle properties in disordered 2D d-wave superconductors occur because of the unanticipated importance of disorder model details and normal state particle-hole symmetry. For the realistic case, which is best described by a binary alloy model without particle-hole symmetry, we predict density-of-state suppression below an energy scale which appears to be correlated with the corresponding single impurity resonance.
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