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arXiv · 2601.10853

Hopfions in screw chiral magnets

Sandra C Shaju·Maria Azhar·Karin Everschor-Sitte
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Abstract

Three-dimensional topological spin textures have attracted growing interest due to their rich geometry and potential for functional magnetic phenomena. In this work, we propose the concept of symmetry-transforming magnetic models as a novel route to generate and stabilize complex three-dimensional textures in an arbitrary magnetic background. Using this framework, we predict a screw chiral magnet model that stabilizes magnetic Hopfions and other three-dimensional magnetic textures within a ferromagnetic background. We show that the resulting solitons display distinctive physical properties, including unconventional Goldstone modes. Our results establish continuous symmetry transformations as a general strategy for uncovering new classes of magnetic solitons with unique dynamical signatures.

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Sandra C Shaju, Maria Azhar, Karin Everschor-Sitte. 2026-01-15. Hopfions in screw chiral magnets. https://doi.org/10.1063/5.0327533

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