Table of Contents
International Journal of Superconductivity
Volume 2014, Article ID 587287, 7 pages
http://dx.doi.org/10.1155/2014/587287
Research Article

An Analysis of Strong Coupling in the High Tc Superconductors

King’s College, Cambridge University, Cambridge CB2 1ST, UK

Received 19 December 2013; Accepted 20 January 2014; Published 17 March 2014

Academic Editor: Veer Pal Singh Awana

Copyright © 2014 J. H. Turner. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A new McMillan formula is assembled for the High Temperature Superconductors that evidences strong coupling in these materials. The McMillan-Hopfield parameter is calculated in each case, in addition to the Bergmann and Rainer enhancement frequency. The cubic symmetry of the CuO layers and the lattice cohesion and oxygen presence are suggested reasons for the effect.