Unusual thermodynamical and transport signatures of short coherence length superconductors: A BCS Bose-Einstein crossover approach

Preprint
Publisher Website
Google Scholar
  • 25 August 1999
Abstract
In this paper we present predictions for non-BCS like temperature dependences in thermodynamic and transport properties within the class of short coherence length superconductors. We use a BCS Bose-Einstein crossover theory below Tc and find that at moderate and strong coupling this predicted behavior reflects the quasi-ideal Bose gas structure of the underlying ground state. These observations provide an important basis for distinguishing this crossover scenario from an alternative phase fluctuation approach, applied to the same class of materials. Knight shift, superfluid density, and specific heat are addressed and comparison with existing data on both organic and high temperature superconductors lends support to our theory.

This publication has 0 references indexed in Scilit: