Inhomogeneity effects on the magnetoresistance and the ghost critical field above t_c in thin mixture films of in-ge

We have investigated the effects of inhomogeneity on the magnetoresistance (MR) of thin mixture films of In-Ge. By performing these measurements near the superconducting transition temperature, we could identify the ghost critical field, H^*_c2 We have used the data on mr and H^*_c2 to calculate quantities such as the coefficient of diffusion and the inelastic scattering time. A homogeneous-inhomogeneous transition is observed when the relevant length scale (the inelastic diffusion length or the superconducting coherence length) becomes of the order of the inhomogeneity scale in the sample.