The charge carrier density effect on the superconductor parameters in a two-band model

Abstract

The effect of the mobile charge concentration on the electron-phonon coupling constant, the band overlapping parameter and the isotopic coefficient is studied for a two-dimensional superconductor in a two-band model. This model is applied to describe the relation between the superconducting transition and the carrier density in CuO2 layered superconductors, within the BCS framework. The experimental data for doping-induced charge in layered Hg-based cuprates are used to obtain numerical results. (c) 2006 Published by Elsevier B.V.