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Transition temperature of two-band superconductors with Anderson impurities

โœ Scribed by S. Yoksan

Publisher
Springer US
Year
1981
Tongue
English
Weight
377 KB
Volume
42
Category
Article
ISSN
0022-2291

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โœฆ Synopsis

The influence of impurities on the superconducting transition temperature of two-band superconductors containing Anderson impurities is investigated. It is found that the concentration-dependent transition temperature shows typical departures from the formula for a single-band superconductor. These departures occur because of the interband scattering of conduction electrons on impurities. The calculations reveal clearly that in the presence of impurities the effective pairing interaction becomes coupling-parameter dependent, giving rise to a new pair-weakening mechanism. Analytic results for Tr on the basis of this simple two-band model are presented.

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