Regensburg 2022 – scientific programme
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MA: Fachverband Magnetismus
MA 37: Skyrmions 3 (joint session MA/KFM)
MA 37.5: Talk
Friday, September 9, 2022, 10:30–10:45, H37
Non-Abelian Vortices in Magnets — •Filipp Rybakov1 and Olle Eriksson1,2 — 1Uppsala University, Sweden — 2Örebro University, Sweden
The non-Abelian (non-commutative) topological states in ordered media may exhibit interesting physics emerging from purely topological arguments [1].
Here we show that non-Abelian vortices also can exist in magnets [2]. We give a topological classification of these vortices and reveal their connection with Abelian topological structures, such as usual vortices, merons, skyrmions. We analyze the potential of non-Abelian magnetic vortices for memory devices and emphasize their advantage, since they provide topological protection of all information, rather than individual bits, as in Abelian cases.
[1] N. D. Mermin, Rev. Mod. Phys. 51, 591 (1979).
[2] F. N. Rybakov and O. Eriksson, arXiv:2205.15264 (2022).