THE OSCILLATION OF THE CRITICAL-TEMPERATURE OF S-F MULTILAYERS

The method of the analytical solution of Usadel equations for S - F systems with large exchange ferromagnetic field is proposed. It is shown that the critical temperature of S - F superlattices and critical current of S - F - S Josephson junctions oscillate as the exchange field and thickness of F-layers change. These oscillations are connected with the transition into the state where the phase of superconductivity order parameter is different on the adjacent S-layers. The possibilities of experimental observation of proposed effects are briefly discussed.