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

Abstract

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.

10 pages, 3 figures

References in corpus (5)

• Superconductivity of metallic boron in MgB_2
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• Band-structure trend in hole-doped cuprates and correlation with Tcmax
• Evidence for Two Superconducting Gaps in $Mg{B}_2$
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