Time‐Dependent Ginzburg‐Landau Equations for Anisotropic Superconducting Alloys

Abstract

AbstractIn the framework of space and time dependent Green's functions an implicite expression for the energy integrated electron Green function is presented for anisotropic superconducting alloys. Normal and paramagnetic impurity scattering is included as well as relaxation processes due to inelastic electron scattering. The theory is later on specialized for an anisotropic system with normal momentum scattering only in order to study the ‘smearing’ out of the anisotropy. A separable model is finally employed to describe the anisotropy of the Fermi velocity and of the electron—phonon interaction. Within this model the influence is studied of the mean square anisotropy and of the normal impurity concentration on the Ginzburg‐Landau parameter, on the critical temperature, on the upper critical magnetic field, and on the penetration velocity of the flux vortices.