Tail States in a Superconductor with Magnetic Impurities
A. Lamacraft, B. D. Simons
DOI 10.1103/PhysRevLett.85.4783 · Physical Review Letters
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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.
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