Dresden 2026 – scientific programme

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MA: Fachverband Magnetismus

MA 30: Functional Antiferromagnetism

MA 30.7: Talk

Wednesday, March 11, 2026, 11:15–11:30, POT/0151

Creation of antiferromagnetic skyrmions by edge manipulation — •Aleksey Berg, Tim Matthies, and Elena Vedmedenko — University of Hamburg

Novel magnetic storage technologies rely on ferromagnetic topological objects to represent information. These objects can be created, propelled and annihilated by electric currents in racetracks. We have recently demonstrated theoretically that arbitrary sequences of coexisting ferromagnetic skyrmions and antiskyrmions can be processed via local rotations of magnetic moments at the edge of a rectangular slab, eliminating the need for global charge or spin currents [1]. This local manipulation can be achieved experimentally using rotating local magnetic fields or currents. Here, we demonstrate that edge rotation can be effectively applied to antiferromagnetic skyrmions, too. Furthermore, antiferromagnetic quasiparticles can be created and propelled without rotating the edge magnetisation, but rather by switching the local magnetisation at the racetrack edge. This low-energy manipulation of stable antiferromagnetic topological quasiparticles via local excitation would be highly advantageous in the field of antiferromagnetic spintronics. 1. P. Siegl et al., Phys. Rev. B 106, 014421 (2022)

Keywords: antiferromagnetic skyrmions; antiferromagnetic spintronics; spin dynamics