Mikhail S. Kalenkov, Andrei D. Zaikin, Leonid S. Kuzmin
We argue that parametrically strong enhancement of a thermoelectric current can be observed in conventional superconductors doped by magnetic impurities. This effect is caused by violation of the symmetry between electron-like and hole-like excitations due to formation of subgap quasi-bound Andreev states in the vicinity of magnetic impurities. We develop a quantitative theory of this effect and demonstrate that it can be detected in modern experiments.
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http://arxiv.org/abs/1203.2459
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