Fractional Skyrmion Tubes in Chiral-Interfaced Three-Dimensional Magnetic Nanowires
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arXiv
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| Format: | Preprint |
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2024
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| author | Fullerton, John Leo, Naëmi Jurczyk, Jakub Donnelly, Claire Sanz-Hernández, Dédalo Skoric, Luka Mille, Nicolas Stanescu, Stefan MacLaren, Donald A. Belkhou, Rachid Hierro-Rodriguez, Aurelio Fernández-Pacheco, Amalio |
| author_facet | Fullerton, John Leo, Naëmi Jurczyk, Jakub Donnelly, Claire Sanz-Hernández, Dédalo Skoric, Luka Mille, Nicolas Stanescu, Stefan MacLaren, Donald A. Belkhou, Rachid Hierro-Rodriguez, Aurelio Fernández-Pacheco, Amalio |
| contents | 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, we demonstrate the formation of fractional Bloch skyrmion tubes at room temperature by 3D printing ferromagnetic double-helix nanowires with two regions of opposite chirality. Using X-ray microscopy and micromagnetic simulations, we show that the coexistence of vortex and anti-parallel spin states induces the formation of fractional skyrmion tubes at zero magnetic fields, minimising the energy cost of breaking the coupling between geometric and magnetic chirality. We also demonstrate control over zero-field states, 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_14069 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Fractional Skyrmion Tubes in Chiral-Interfaced Three-Dimensional Magnetic Nanowires Fullerton, John Leo, Naëmi Jurczyk, Jakub Donnelly, Claire Sanz-Hernández, Dédalo Skoric, Luka Mille, Nicolas Stanescu, Stefan MacLaren, Donald A. Belkhou, Rachid Hierro-Rodriguez, Aurelio Fernández-Pacheco, Amalio Mesoscale and Nanoscale Physics 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, we demonstrate the formation of fractional Bloch skyrmion tubes at room temperature by 3D printing ferromagnetic double-helix nanowires with two regions of opposite chirality. Using X-ray microscopy and micromagnetic simulations, we show that the coexistence of vortex and anti-parallel spin states induces the formation of fractional skyrmion tubes at zero magnetic fields, minimising the energy cost of breaking the coupling between geometric and magnetic chirality. We also demonstrate control over zero-field states, 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. |
| title | Fractional Skyrmion Tubes in Chiral-Interfaced Three-Dimensional Magnetic Nanowires |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2412.14069 |