SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 35: Skyrmions III
MA 35.8: Vortrag
Donnerstag, 30. März 2023, 11:30–11:45, HSZ 04
Investigation of the stability of exchange-stabilized skyrmions — •Sarina Lebs1, Markus Hoffmann1, Moritz Sallermann1,2, and Stefan Blügel1 — 1Peter Grünberg Institut & Institute for Advanced Simulation, Forschungszentrum Jülich & JARA, Jülich, Germany — 2Science Institute of the University of Iceland, VR-III, Reykjavík, Iceland
To utilize magnetic skyrmions, localized topologically nontrivial textures, in technological applications, a long lifetime at room temperature is required. Therefore, a major focus of magnetism research is the analysis of the stability of such skyrmions. The main focus in the past was on DMI-stabilized skyrmions, little is known about exchange stabilized ones.
In this presentation, we discuss the significance of the different stabilization mechanisms for the skyrmion lifetimes. Using the Spirit code [1], we perform LLG, GNEB, as well as HTST simulations to calculate skyrmion profiles, transition paths, and lifetimes for both DMI- as well as exchange-stabilized skyrmions. We discuss similarities as well as differences between the stabilization mechanisms for the lifetime.
We acknowledge funding by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant No. 856538, project 3D MAGiC).
[1] Spirit – spin simulation framework, https://spirit-code.github.io