Skyrmion flow in periodically modulated channels
Fuente:
arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866913263907766272 |
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| author | Raab, Klaus Schmitt, Maurice Brems, Maarten A. Rothörl, Jan Kammerbauer, Fabian Krishnia, Sachin Kläui, Mathias Virnau, Peter |
| author_facet | Raab, Klaus Schmitt, Maurice Brems, Maarten A. Rothörl, Jan Kammerbauer, Fabian Krishnia, Sachin Kläui, Mathias Virnau, Peter |
| contents | Magnetic skyrmions, topologically stabilized chiral magnetic textures with particle-like properties have so far primarily been studied statically. Here, we experimentally investigate the dynamics of skyrmion ensembles in metallic thin film conduits where they behave as quasi-particle fluids. By exploiting our access to the full trajectories of all fluid particles by means of time-resolved magneto-optical Kerr microscopy, we demonstrate that boundary conditions of skyrmion fluids can be tuned by modulation of the channel geometry. We observe as a function of channel width deviations from classical flow profiles even into the no- or partial-slip regime. Unlike conventional colloids, the skyrmion Hall effect can also introduce transversal flow-asymmetries and even local motion of single skyrmions against the driving force which we explore with particle-based simulations, demonstrating the unique properties of skyrmion liquid flow that uniquely deviates from previously known behavior of other quasi-particles. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_07397 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Skyrmion flow in periodically modulated channels Raab, Klaus Schmitt, Maurice Brems, Maarten A. Rothörl, Jan Kammerbauer, Fabian Krishnia, Sachin Kläui, Mathias Virnau, Peter Mesoscale and Nanoscale Physics Other Condensed Matter Magnetic skyrmions, topologically stabilized chiral magnetic textures with particle-like properties have so far primarily been studied statically. Here, we experimentally investigate the dynamics of skyrmion ensembles in metallic thin film conduits where they behave as quasi-particle fluids. By exploiting our access to the full trajectories of all fluid particles by means of time-resolved magneto-optical Kerr microscopy, we demonstrate that boundary conditions of skyrmion fluids can be tuned by modulation of the channel geometry. We observe as a function of channel width deviations from classical flow profiles even into the no- or partial-slip regime. Unlike conventional colloids, the skyrmion Hall effect can also introduce transversal flow-asymmetries and even local motion of single skyrmions against the driving force which we explore with particle-based simulations, demonstrating the unique properties of skyrmion liquid flow that uniquely deviates from previously known behavior of other quasi-particles. |
| title | Skyrmion flow in periodically modulated channels |
| topic | Mesoscale and Nanoscale Physics Other Condensed Matter |
| url | https://arxiv.org/abs/2403.07397 |