Density of states of ad-wave superconductor in the presence of strong impurity scatterers: A nonperturbative result
- 3 January 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 63 (5), 054502
- https://doi.org/10.1103/physrevb.63.054502
Abstract
We present a method to compute the density of states induced by a finite density of nonmagnetic impurities in a d-wave superconductor, in the unitary limit of very strong scattering centers. For frequencies very small as compared to the superconducting gap the additional density of states has the leading divergence This result is nonperturbative.
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