The superfluid density - Tc correlations in inhomogenous superconductors

TYPECondensed Matter Seminar
Speaker:Prof. Yoseph Imry
Affiliation:Weizmann Institute of Science
Location:Lidow Nathan Rosen (300)

Following a short discussion of the granular model for an inhomogenous superconductor, we review the Uemura and Homes correlations. We show how both follow in two appropriate limits of a simple granular superconductor model. Definite expressions are given for the almost universal coefficients appearing in

these relationships in terms of known constants. The picture is in a semiquantitative agreement with a large number of experimental results on both high- Tc and disordered conventional superconductors. A physical understanding will be given to how these inhomogeneities often arise.