Berlin 2018 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 40: Focus Session: Spinorbitronics – from efficient charge/spin conversion based on spin-orbit coupling to chiral magnetic skyrmions I (joint session MA/TT)

MA 40.4: Vortrag

Donnerstag, 15. März 2018, 10:30–10:45, H 1012

Electric-field-induced and magneto-optic response properties of chiral magnetic solids — •Sebastian Wimmer, Sergiy Mankovsky, Svitlana Polesya, and Hubert Ebert — Dept. Chemie, LMU, München, Deutschland

Chiral magnetism and its manifestation in response properties such as Hall effects are one of the most attractive topics in current solid state science owing to their fascinating fundamentals as well as promising potential for application. This talk will report on the space-time symmetry restrictions on the tensor shapes of charge and spin conductivity, spin-orbit torque and (Rashba-)Edelstein effect and accompanying first-principles calculations of the respective response coefficients in Mn-based compounds experimentally known to exhibit large chirality-induced Hall effects. The numerical work has been performed using the spin-polarized relativistic Korringa-Kohn-Rostoker (SPR-KKR) multiple-scattering-based band structure method and Kubo’s linear response formalism. The focus will be on chirality-driven or topological contributions arising due to a nonvanishing scalar spin chirality. Discussions will be based on computational studies of a spin texture smoothly varying between the collinear and noncollinear coplanar limits and manipulation of the spin-orbit coupling strength. Complementary results for orbital moments and current distributions as well as X-ray magnetic dichroism will be presented in addition.