Berlin 2018 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 21: Poster I
MA 21.51: Poster
Dienstag, 13. März 2018, 09:30–13:00, Poster A
Insights into spin and anomalous Hall effect induced charge and spin currents through ferromagnetic/nonmagnetic interfaces — •Albert Hönemann1, Christian Herschbach1, Martin Gradhand2, and Ingrid Mertig1,3 — 1Martin Luther University Halle-Wittenberg, Halle, Germany — 2University of Bristol, Bristol, United Kingdom — 3Max Planck Institute of Microstructure Physics, Halle, Germany
Transport phenomena caused by spin-orbit coupling such as spin Hall effect (SHE) [1] and anomalous Hall effect (AHE) [2] are highly relevant topics of current research. In ferromagnetic/nonmagnetic heterostructures the interplay of spin-orbit and exchange interaction enables new phenomena as for example spin-orbit torques [3].
We use an ab initio approach, a relativistic Korringa-Kohn-Rostoker method, [4] and solve the linearized Boltzmann equation to describe the electronic transport [5]. We investigate the AHE-induced charge current as well as the SHE-induced spin current perpendicular to the interface in a Co/Cu superlattice alloyed with Bi. We are particularly interested in the spatial distribution of charge and spin current with respect to the interface. The presented results help to understand the underlying microscopic mechanism of charge and spin transport through interfaces.
[1] Sinova et al., Rev. Mod. Phys. 87, 1213 (2015); [2] Nagaosa et al., Rev. Mod. Phys. 82, 1539 (2010); [3] Gambardella et al., Phil. Trans. R. Soc. A (2011) 369, 3175-3197; [4] Gradhand et al., PRB 80, 224413 (2009); [5] Gradhand et al., PRL 104, 186403 (2010);