Density of states, entropy, and specific heat for dirty type II superconductors at arbitrary temperature

Abstract

Using a recent dirty-limit version of the Gor'kov theory, we calculate numerically the analytic continuation of the thermal Green's function onto the real axis. The order parameter and the magnetic field are determined self-consistently within the circular cell approximation of the vortex lattice. From the Green's functions one obtains the density of states and various thermodynamic quantities. The results are compared with experiments and an approximate theory by Takayama and Maki.