SKM 2021 – scientific programme

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MA: Fachverband Magnetismus

MA 5: Posters Magnetism II

MA 5.2: Poster

Tuesday, September 28, 2021, 10:00–13:00, P

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

Magnetic skyrmions in synthetic antiferromagnets exhibit favorable transport properties [1], e.g. the absence of the skyrmion Hall effect and have recently been stabilized at room temperature [2]. Here, we investigate synthetic antiferromagnets built from trilayers composed of Co and Fe layers coupled via a Rh spacer layer. Ab initio calculations using density functional theory were performed to obtain the strength of the inter- and intralayer exchange and Dzyaloshinskii-Moriya interactions which allows to parametrize an atomistic spin model. We studied freestanding trilayers as well as trilayers on the Ir(111) surface since both Rh/Co and Rh/Fe bilayers have previously been grown on this surface [3,4].

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

[2] Legrand et al. Nat. Mat. 19, 34 (2020)

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

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