Berlin 2018 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 52: Poster II

MA 52.42: Poster

Donnerstag, 15. März 2018, 15:00–18:00, Poster C

Impact of transition metals clusters on the stability and dynamics of Skyrmions — •I Gede Arjana, Jonathan Chico, Imara L. Fernandes, and Samir Lounis — Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich & JARA, D-52425 Jülich, Germany

Owing to their topological properties, magnetic skyrmions are prime candidates for future spintronic devices. However, incorporating them as possible bits of information hinges on their interaction with inhomogenities present in any device. Recently, single skyrmions in Pd/Fe/Ir(111) were moved using a Co trimer deposited on the surface but not with a single Co adatom[1]. Following our previous works [2,3], we investigate the interaction of 3d and 4d clusters with a single magnetic skyrmion in Pd/Fe/Ir(111) and explore their electronic and magnetic properties with a full ab initio approach. The latter is used in conjunction with atomistic spin dynamics to study the complex motion of skyrmions going beyond the description based on the Thiele equation. This allows us to study the effect that different types of clusters have over the skyrmions dynamics, and how such defects can be used to engineer tracks and nucleations areas, which are of importance for spintronic devices. – Funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (ERC-consolidator grant 681405 - DYNASORE).
[1] C. Hanneken et al., New J. of Physics, 18, 055009 (2016).
[2] D. M. Crum et al., Nat. Comms. 6, 8541 (2015).
[3] I. L. Fernandes et al., submitted (2017).