Dresden 2011 – scientific programme

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MA: Fachverband Magnetismus

MA 5: Spincaloric Transport

MA 5.4: Talk

Monday, March 14, 2011, 11:45–12:00, HSZ 04

Spin injection via thermal gradients. — •Benedikt Scharf, Jaroslav Fabian, and Alex Matos Abiague — Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Deutschland

The interplay between spin transport and thermoelectricity offers several novel ways of generating, manipulating, and detecting nonequilibrium spin in a wide range of materials. Here we present a phenomenological model in the spirit of the standard model of spin injection to describe the coupling of charge, spin and heat transport in electronic materials and then employ this model to analyze several different geometries: F/N and F/N/F junctions which are subject to thermal gradients. We find that temperature differences across the junctions can be used to generate pure spin currents which inject nonequilibrium spin into the N region of those junctions or extract nonequilibrium spin from it. This work is supported by the Deutsche Forschungsgemeinschaft via GRK 1570.