Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires
Abstract Magnetic skyrmions are chiral spin textures with rich physics and great potential for unconventional computing. Typically, skyrmions form in bulk crystals with reduced symmetry or ultrathin film multilayers involving heavy metals. Here, the formation of fractional Bloch skyrmion tubes at room temperature is demonstrated by 3D printing ferromagnetic double‐helix nanowires with two regions of opposite chirality. Using X‐ray microscopy and micromagnetic simulations, it is shown that the coexistence of vortex and anti‐parallel spin states induces the formation of fractional skyrmion tubes at zero magnetic fields, minimizing the energy cost of breaking the coupling between geometric and magnetic chirality. Control over zero‐field states is also demonstrated, including pure vortex, or mixed skyrmion‐vortex states, highlighting the magnetic reconfigurability of these 3D nanowires. This work shows how interfacing chiral geometries at the nanoscale can enable advanced forms of topological spintronics.
Authors
- Amalio Fernández‐Pacheco (ORCID: https://orcid.org/0000-0002-3862-8472)
- A. Hierro‐Rodríguez (ORCID: https://orcid.org/0000-0001-6600-7801)
- Rachid Belkhou (ORCID: https://orcid.org/0000-0002-2218-7481)
- John Fullerton (ORCID: https://orcid.org/0000-0002-7527-7034)
- Jakub Jurczyk (ORCID: https://orcid.org/0000-0002-4619-6550)
- Stefan Stanescu (ORCID: https://orcid.org/0000-0002-4543-1774)
- Luka Skorić (ORCID: https://orcid.org/0000-0002-2169-3008)
- Donald A. MacLaren (ORCID: https://orcid.org/0000-0003-0641-686X)
- Claire Donnelly (ORCID: https://orcid.org/0000-0002-9942-2419)
- Nicolas Mille (ORCID: https://orcid.org/0000-0003-1031-9640)
- Naëmi Leo (ORCID: https://orcid.org/0000-0002-0828-6889)
- Dédalo Sanz‐Hernández (ORCID: https://orcid.org/0000-0002-5552-8836)
Institutions
- Hiroshima University (JP)
- Argonne National Laboratory (US)
- Centre National de la Recherche Scientifique (FR)
- Loughborough University (GB)
- TU Wien (AT)
- Universidad de Oviedo (ES)
- University of Cambridge (GB)
- Université Paris-Saclay (FR)
- Synchrotron soleil (FR)
- Max Planck Institute for Chemical Physics of Solids (DE)
- Thales (France) (FR)
- University of Glasgow (GB)
Publication Details
- Journal
- Advanced Functional Materials
- Published
- 2025-04-15
- DOI
- https://doi.org/10.1002/adfm.202501615
- Citations
- 10
- Primary Topic
- Magnetic properties of thin films
- Type
- article
- Field-Weighted Citation Impact
- 12.47
Funders
- UK Research and Innovation
- European Commission
- Ministerio de Ciencia e Innovación
- Engineering and Physical Sciences Research Council
- European Research Council