PT Journal AU Usadel, KD TI Generalized diffusion equation for superconducting alloys SO Phys. Rev. Lett. JI Phys. Rev. Lett. PY 1970 BP 507 VL 25 IS 8 DI 10.1103/PhysRevLett.25.507 AB Eilenberger's transportlike equations for a superconductor of type II can be simplified very much in the dirty limit. In this limit a diffusionlike equation is derived which is the generalization of the de Gennes-Maki theory for dirty superconductors to arbitrary values of the order parameter. ER