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On Superconductivity in Narrow‐Band Alloys
Author(s) -
Beckmann A.,
Kolley E.,
Kolley W.
Publication year - 1982
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221100224
Subject(s) - condensed matter physics , superconductivity , pairing , coulomb , formalism (music) , electron , physics , superconducting transition temperature , materials science , quantum mechanics , art , musical , visual arts
Two different approaches to disordered superconductors are examined to derive a random contact model on the basis of nonlocal electron‐phonon coupling. The formalism, aimed at transition metal alloys in the weak‐coupling regime, takes into account both, the finite‐range pairing interaction, and the intraatomic Coulomb repulsion of the tightly bound electrons. The superconducting transition temperature of A c B 1− c alloys is calculated for the nonmagnetic and magnetic cases.