Skyrmion automotion in confined counter-sensor device geometries
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2022
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| _version_ | 1866916242204393472 |
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| author | Leutner, Kilian Winkler, Thomas Brian Güttinger, Johannes Fangohr, Hans Kläui, Mathias |
| author_facet | Leutner, Kilian Winkler, Thomas Brian Güttinger, Johannes Fangohr, Hans Kläui, Mathias |
| contents | Magnetic skyrmions are topologically stabilized quasi-particles and are promising candidates for energy-efficient applications, such as storage but also logic and sensing. Here we present a new concept for a multi-turn sensor-counter device based on skyrmions, where the number of sensed rotations is encoded in the number of nucleated skyrmions. The skyrmion-boundary force in the confined geometry of the device in combination with the topology-dependent dynamics leads to the effect of automotion for certain geometries. For our case, we describe and investigate this effect with micromagnetic simulations and the coarse-grained Thiele equation in a triangular geometry with an attached reservoir as part of the sensor-counter device. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2211_05711 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Skyrmion automotion in confined counter-sensor device geometries Leutner, Kilian Winkler, Thomas Brian Güttinger, Johannes Fangohr, Hans Kläui, Mathias Mesoscale and Nanoscale Physics Materials Science Applied Physics Computational Physics Magnetic skyrmions are topologically stabilized quasi-particles and are promising candidates for energy-efficient applications, such as storage but also logic and sensing. Here we present a new concept for a multi-turn sensor-counter device based on skyrmions, where the number of sensed rotations is encoded in the number of nucleated skyrmions. The skyrmion-boundary force in the confined geometry of the device in combination with the topology-dependent dynamics leads to the effect of automotion for certain geometries. For our case, we describe and investigate this effect with micromagnetic simulations and the coarse-grained Thiele equation in a triangular geometry with an attached reservoir as part of the sensor-counter device. |
| title | Skyrmion automotion in confined counter-sensor device geometries |
| topic | Mesoscale and Nanoscale Physics Materials Science Applied Physics Computational Physics |
| url | https://arxiv.org/abs/2211.05711 |