Abstract
A field theoretic approach is developed to investigate the profile and spectrum of subgap states in a superconductor subject to a weak magnetic impurity potential. Such states are found to be associated with spatially inhomogeneous instanton configurations of the action.
- Received 19 July 2000
DOI:https://doi.org/10.1103/PhysRevLett.85.4783
©2000 American Physical Society
