SKM 2021 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 5: Posters Magnetism II
MA 5.9: Poster
Dienstag, 28. September 2021, 10:00–13:00, P
Ab-initio investigation of intrinsic antiferromagnetic skyrmions in magnetic thin films — •Amal Aldarawsheh1, 2, Imara Fernandes1, Sascha Brinker1, Moritz Sallersmann1, Muayyad Abusaa3, and Samir Lounis1,2 — 1Peter Grünberg Institute and Institute for Advanced Simulation, Forschungszentrum Jülich & JARA, 52425 Jülich, Germany — 2Faculty of Physics, University of Duisburg-Essen, 47053 Duisburg, Germany — 3Physics Department, Arab American University, Jenin, Palestine.
Skyrmions are topologically protected spin textures that are envisioned to be the next generation of bits.
However, conventional ferromagnetic (FM) skyrmions are deflected when an electric field is applied, which limits their use in spintronic devices. In contrast, antiferromagnetic (AFM) skyrmions, which consist of two FM solitons coupled antiferromagnitically, are
predicted to have zero net magnus force [1], and this makes them promising candidates for spintronic racetrack memories. So far these have been stabilized in synthetic AFM structures [2], i.e. multilayers hosting FM skyrmions, which couple antiferromagnetically through a non-magnetic spacer. Using ab initio calculations in conjunction with atomistic spin dynamics, we investigate systematically and predict the presence of chiral intrinsic AFM structures in specific and realistic combination of thin films deposited on heavy substrates.
[1] X. Zhang et al. Sci. Rep. 6, 24795 (2016),
[2] Legrand et al. Nat. Mat., 19, 34 (2020).
Work funded by the PGSB (BMBF–01DH16027) and Horizon 2020–ERC (CoG 681405–DYNASORE).