Enhancements of the superconducting transition temperature within the two-band model

Details Enhancements of the superconducting transition temperature within the two-band model Enhancements of the superconducting transition temperature within the two-band model

2002-11-26

arxiv.org/abs/cond-mat/0211588v1

Physics

Condensed Matter

Superconductivity

10 pages, 3 figures

Scientific paper

10.1140/epjb/e2004-00065-5

The two-band model as introduced by Suhl, Matthias and Walker [Phys. Rev. Lett. 3, 551 (1959)] accounts for multiple energy bands in the vicinity of the Fermi energy which could contribute to electron pairing in superconducting systems. Here, extensions of this model are investigated wherein the effects of coupled superconducting order parameters with different symmetries and the presence of strong electron-lattice coupling on the superconducting transition temperature Tc are studied. Substantial enhancements of Tc are obtained from both effects.

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