Journal Article

FZJ-2026-02178

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Linked skyrmions in shifted magnetic bilayer

Ghosh, S. (Corresponding author)FZJ* ; Katsumoto, H.FZJ* ; Bihlmayer, G.FZJ* ; Sallermann, M.FZJ* ; Kuchkin, V. ; Rybakov, F. N. ; Eriksson, O. ; Blügel, S.FZJ* ; Kiselev, N. S.FZJ*

2026
Springer Nature London

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Please use a persistent id in citations: doi:10.1038/s42005-026-02533-7  doi:10.34734/FZJ-2026-02178

Abstract: Magnetic solitons have recently attracted significant attention due to their intricate physical propertiesand potential applications in information processing. The majority of the studies in this field, however,are focused on a particular type of solitons known as skyrmions, characterised by a unit topologicalcharge. Here, we present a shifted magnetic bilayer that can demonstrate magnetic solitons witharbitrary large topological charges. These configurations, which we call linked skyrmions, consist ofmultiple skyrmions linked together with topological point defects. These topological point defects,termed as anti-aligned points, originate from the mutually orthogonal Dzyaloshinskii-Moriyainteraction in two different layers. By tuning the interlayer exchange coupling and the externalmagnetic field, one can also achieve different ground states in this bilayer. Additionally, the systemalso demonstrates conventional skyrmion-bags and kπ-skyrmions. Finally we propose a suitablematerial candidate where these magnetic configurations can be realised. Our findings, thus, canprovide a way to achieve solitons with large topological charge and realise them in realistic systemsF

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (PGI-1)

Research Program(s):

1. 5211 - Topological Matter (POF4-521) (POF4-521)
2. 3D MAGiC - Three-dimensional magnetization textures: Discovery and control on the nanoscale (856538) (856538)

Appears in the scientific report 2026

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