| Autor: |
Oleksii M. Volkov, Oleksandr V. Pylypovskyi, Fabrizio Porrati, Florian Kronast, Jose A. Fernandez-Roldan, Attila Kákay, Alexander Kuprava, Sven Barth, Filipp N. Rybakov, Olle Eriksson, Sebastian Lamb-Camarena, Pavlo Makushko, Mohamad-Assaad Mawass, Shahrukh Shakeel, Oleksandr V. Dobrovolskiy, Michael Huth, Denys Makarov |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Nature Communications, Vol 15, Iss 1, Pp 1-13 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2041-1723 |
| DOI: |
10.1038/s41467-024-46403-8 |
| Popis: |
Abstract Additive nanotechnology enable curvilinear and three-dimensional (3D) magnetic architectures with tunable topology and functionalities surpassing their planar counterparts. Here, we experimentally reveal that 3D soft magnetic wireframe structures resemble compact manifolds and accommodate magnetic textures of high order vorticity determined by the Euler characteristic, χ. We demonstrate that self-standing magnetic tetrapods (homeomorphic to a sphere; χ = + 2) support six surface topological solitons, namely four vortices and two antivortices, with a total vorticity of + 2 equal to its Euler characteristic. Alternatively, wireframe structures with one loop (homeomorphic to a torus; χ = 0) possess equal number of vortices and antivortices, which is relevant for spin-wave splitters and 3D magnonics. Subsequent introduction of n holes into the wireframe geometry (homeomorphic to an n-torus; χ |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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