Regensburg 2019 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 21: Magnetic textures: Transport and dynamics I

MA 21.4: Vortrag

Dienstag, 2. April 2019, 14:45–15:00, H38

Chirality-induced linear response properties in hexagonal Mn₃Ge — •Sebastian Wimmer, Sergiy Mankovsky, and Hubert Ebert — LMU München, Dept. Chemie, München, Deutschland

Taking the non-collinear antiferromagnetic hexagonal Heusler compound Mn₃Ge as a precursor, the contributions to linear response phenomena arising solely from the chiral coplanar and non-coplanar spin configurations are investigated in first-principles calculations. Orbital moments, X-ray absorption, anomalous and spin Hall effects, as well as corresponding spin-orbit torques and Edelstein polarizations are studied depending on a continuous variation of the polar angle relative to the Kagome planes of corner-sharing triangles between the non-collinear antiferromagnetic and the ferromagnetic limits. By scaling the speed of light from the relativistic Dirac case to the non-relativistic limit the chirality-induced or topological contributions can be identified in the absence of spin-orbit coupling.