Structural relaxation: low temperature properties

Abstract

We discuss the changes in transport and superconducting properties of amorphous Zr70Cu30, induced by thermal relaxation. The experimental results are used to investigate the relation between the microscopic parameters and the observed physical properties. It is shown that the density of eletronic states determines the shift Tc as well as the variation of the electrical resistivity. It is necessary to assume strong hybridization between s and d bands to understand the eletrodynamic response of the superconductor.