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MA: Fachverband Magnetismus
MA 46: Poster II
MA 46.69: Poster
Donnerstag, 21. März 2024, 15:00–18:00, Poster C
Ab-initio spin dynamics in non-collinear magnets — •David Eilmsteiner1,2, Pawel Buczek2, and Arthur Ernst1 — 1Johannes Kepler University, Linz, Austria — 2HAW Hamburg, Hamburg, Germany
The investigation of magnetization dynamics is a highly active field of research on both the experimental and the theoretical side. Our group focuses on the determination of magnetic properties by means of the Korringa-Kohn-Rostoker Green's functions approach to density functional theory. This method not only allows for the self-consistent determination of ground state properties of ordered and disordered materials, it can also conveniently be extended to the description of magnetization dynamics in the linear response regime, which allows for the investigation of various magnetic excitations, such as Stoner excitations or magnons on an equal footing.
On my poster, I will focus on our current effort to extend our method to non-collinear magnetic systems. Investigating the dynamics of non-collinear magnets, stabilized either by geometric frustration or relativistic effects, is of great interest as, in that case, the magnetization dynamics are no longer decoupled from charge density oscillations. Furthermore, the spin-flip excitations are not decoupled from the longitudinal magnetization dynamics. These effects open additional decay channels for spin dynamics, which are absent in the collinear case.
Keywords: Ab initio; Non-collinear magnets; Magnons; Korringa-Kohn-Rostoker method