Regensburg 2016 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 1: Tutorial: Spin Hall Effect and Spin-Orbit Torques

MA 1.3: Tutorium

Sonntag, 6. März 2016, 17:45–18:30, H17

Spin Hall effect and spin-orbit torque from material-specific theory — •Yuriy Mokrousov — Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany

The phenomena of spin Hall effect (SHE) in magnetic and non-magnetic materials, and spin-orbit torque (SOT) in magnetic materials with broken inversion symmetry have become major sources of intensive interest for both theoreticians and experimentalists, owing to their importance for future technology based on relativistic effects. In my talk I will present an overview of recent progress in our understanding and description of the SHE and SOT based on the material-specific first principles theory. My particular focus will be both on the intrinsic Berry phase and impurity-driven origins of the SHE and its anisotropy in paramagnets, ferromagnets and antiferromagnets. I will then review the various origins of the SOT in magnetic bilayers, show how the SOT can be understood based on the non-trivial topology of the electronic bands, and outline the relation between the SOT and the spin currents originated in the non-magnetic substrate.