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Static impurities in strongly anisotropic superconductors

Journal Article · · Sov. Phys. - Solid State (Engl. Transl.); (United States)
OSTI ID:5467469
The effect of nonmagnetic impurities on the superconducting transition temperature T/sub c/ is studied. It is shown that, for impurity concentrations x of the order of 0.1--1%, the gap in the electron excitation spectrum becomes isotropic. When the concentration is increased further, T/sub c/ ceases to be dependent on x. For such values of x, a general expression is derived for T/sub c/ which holds for an arbitrary form of the superconductor Fermi surface.
Research Organization:
Institute of Radio Engineering, Electronics, and Automation, Moscow
OSTI ID:
5467469
Journal Information:
Sov. Phys. - Solid State (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 21:12; ISSN SPSSA
Country of Publication:
United States
Language:
English