Symmetric & antisymmetric solutions of the BCS gap equation with a Bardeen-Pines potential

We solve the BCS gap equation for a momentum-dependent Bardeen-Pines (Frohlich) potential, including the strong-coupling renormalization. We find solutions for negative as well as positive values of the coupling constant λ, and we find solutions antisymmetric in k− k F as well as the well-known symm...

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Bibliographic Details
Published in:Solid state communications 1992, Vol.81 (10), p.811-819
Main Authors: Pereg, Y., Weger, M., Kalma, A.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Physics
Superconductivity
Theory and models of superconducting state
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Summary:We solve the BCS gap equation for a momentum-dependent Bardeen-Pines (Frohlich) potential, including the strong-coupling renormalization. We find solutions for negative as well as positive values of the coupling constant λ, and we find solutions antisymmetric in k− k F as well as the well-known symmetric ones. We discuss salient features of these solutions.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(92)90544-J