Resonant States of a Momentum-Dependent Impurity Potential in a d-Wave Superconductor
P. Pisarski and G. Harań
Institute of Physics, Politechnika Wrocławska, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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Received: 6 11 2007;
Nonmagnetic impurity on-site potential leads to the resonant states in a d-wave superconductor for the unitary scattering limit. We extend the above study to include a momentum dependence of the impurity potential and discuss the existence and number of resonant states for a tetragonal anisotropy of the scattering potential.
DOI: 10.12693/APhysPolA.114.153
PACS numbers: 74.20.Rp, 74.62.Dh, 74.72.-h