Carrier mediated interlayer exchange, ground state phase diagrams and transition temperatures of magnetic thin films

摘要

We investigate the influence of the carrier density and other parameters onthe interlayer exchange in magnetic thin film systems. The system consists offerromagnetic and non-magnetic layers where the carriers are allowed to movefrom layer to layer. For the ferromagnetic layers we use the Kondo-latticemodel to describe interactions between itinerant electrons and local moments.The electrons' properties are calculated by a Green's function's equation ofmotion approach while the magnetization of the local moments is determined by aminimization of the free energy. As results we present magnetic phase diagramsand the interlayer exchange over a broad parameter range. Additionally we cancalculate the transition temperatures for different alignments of theferromagnetic layers' magnetizations.