Dresden 2020 – scientific programme
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MA: Fachverband Magnetismus
MA 59: Posters Magnetism III
MA 59.16: Poster
Friday, March 20, 2020, 09:00–12:00, P2/EG
Dynamics of non-trivial topological states without the need for Dzyaloshinskii-Moriya interaction — •David Eilmsteiner1, Levan Chotorlishvili2, Xi-guang Wang3, Martin Hoffmann1, and Arthur Ernst1,4 — 1Institute for Theoretical Physics, Johannes Kepler University Linz, 4040 Linz, Austria — 2Institute of Physics, Martin Luther University Halle-Wittenberg, 06120 Halle, Germany — 3School of Physics and Electronics, Central South University, Changsha 410083, China — 4Max Planck Institute of Microstructure Physics, 06120 Halle, Germany
The current interest in topologically non-trivial states in magnetic materials, for instance magnetic skyrmions, arises not only from the fascinating connection between the mathematical concept of topology and phenomena observable in the lab but also from possible future applications of those configurations in technology. The main obstacle towards technological applicability is the limited range of materials in which skyrmions intrinsically occur – for instance the Dzyaloshinskii-Moriya interaction is usually required. Nevertheless, making use of special material combinations, it is possible to induce skyrmions in a much wider range of materials. The aim of our research is to study the dynamics of various non-trivial topological configurations in such systems (e.g. bi-skyrmions in a La0.7Sr0.3MnO3-SrRuO3 bilayer with Co disks on top). Therefore, we use the toolkit of micro-magnetism equipped with parameters such as the exchange stiffness or the magneto-crystalline anisotropy gained from first-principles calculations.