We formulate the Dynamical Mean-Field Approximation equations for the double-exchange system with quenched disorder for arbitrary relation between Hund exchange coupling and electron bandwidth. Close to the ferromagnetic-paramagnetic transition point the DMFA equations can be reduced to the ordinary mean-field equation of Curie-Weiss type. We solve the equation to find the transition temperature and present the magnetic phase diagram of the system.
|Number of pages||7|
|State||Published - 2002|