Theory of high T superconductivity from Ginzburg's-theory

Abstract

We have studied the thermodynamic and electrodynamic properties for high Tc superconductors within the framework of a generalized y-theory. Based this theoretical result, we find that the temperature dependence of the coherence length, penetration depth, upper critical field and the lower critical field differs from that of conventional superconductors. Furthermore, we have also calculated the critical current density and parallel critical field for thin fiIms of high Tc superconductors.