Regensburg 2022 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 19: Poster 1

MA 19.4: Poster

Dienstag, 6. September 2022, 17:30–20:00, P2

Exchange- and Dzyaloshinskii-Moriya interactions in magnetic multilayers at surfaces — •Tim Drevelow, Mara Gutzeit, and Stefan Heinze — Institute of Theoretical Physics and Astrophysics, University of Kiel, Leibnizstraße 15, 24098 Kiel, Germany

The coupling of magnetic skyrmions in synthetic antiferromagnets leads to a significant reduction of skyrmion Hall effect and therefore enhanced transports properies [1]. We investigate antiferromagnets based on Rh/Fe and Rh/Co bilayers on an Ir(111) surface, which have previously been grown on this surface [2,3]. With an additional magnetic layer of Fe or Co, we find that these systems realize a synthetic antiferromagnet as a potential host for magnetic skyrmions. Considerations on the symmetry of magnetic states in multilayer systems allow to compute both exchange and Dzyaloshinskii-Moriya interactions within and in between the magnetic layers with ab initio calculations using density functional theory.

[1] Zhang et al. Nat. Com. 7, 10293 (2016)

[2] Romming et al. Phys. Rev. Lett. 120, 207201 (2018)

[3] Meyer et al. Nat. Com. 10, 3823 (2019)