Clocked dynamics in artificial spin ice
Fuente:
arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| Soggetti: | |
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| _version_ | 1866911768539824128 |
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| author | Jensen, Johannes H. Strømberg, Anders Breivik, Ida Penty, Arthur Foerster, Michael Niño, Miguel Angel Khaliq, Muhammad Waqas Tufte, Gunnar Folven, Erik |
| author_facet | Jensen, Johannes H. Strømberg, Anders Breivik, Ida Penty, Arthur Foerster, Michael Niño, Miguel Angel Khaliq, Muhammad Waqas Tufte, Gunnar Folven, Erik |
| contents | Artificial spin ice (ASI) are nanomagnetic metamaterials exhibiting a wide range of emergent properties, which have recently shown promise for neuromorphic computing. However, the lack of efficient protocols to control the state evolution of these metamaterials has been limiting progress. To overcome this barrier, we introduce astroid clocking, a global field protocol offering discrete, gradual evolution of spin states. The method exploits the intrinsic switching astroids and dipolar interactions of the nanomagnets to selectively address ASI spins in sequence. We demonstrate, experimentally and in simulations, how astroid clocking of pinwheel ASI allows ferromagnetic domains to be gradually grown or reversed at will. More complex dynamics arise when the clock protocol allows both growth and reversal to occur simultaneously. Astroid clocking offers unprecedented control and understanding of ASI dynamics in both time and space, extending what is possible in nanomagnetic metamaterials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_07388 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Clocked dynamics in artificial spin ice Jensen, Johannes H. Strømberg, Anders Breivik, Ida Penty, Arthur Foerster, Michael Niño, Miguel Angel Khaliq, Muhammad Waqas Tufte, Gunnar Folven, Erik Mesoscale and Nanoscale Physics Artificial spin ice (ASI) are nanomagnetic metamaterials exhibiting a wide range of emergent properties, which have recently shown promise for neuromorphic computing. However, the lack of efficient protocols to control the state evolution of these metamaterials has been limiting progress. To overcome this barrier, we introduce astroid clocking, a global field protocol offering discrete, gradual evolution of spin states. The method exploits the intrinsic switching astroids and dipolar interactions of the nanomagnets to selectively address ASI spins in sequence. We demonstrate, experimentally and in simulations, how astroid clocking of pinwheel ASI allows ferromagnetic domains to be gradually grown or reversed at will. More complex dynamics arise when the clock protocol allows both growth and reversal to occur simultaneously. Astroid clocking offers unprecedented control and understanding of ASI dynamics in both time and space, extending what is possible in nanomagnetic metamaterials. |
| title | Clocked dynamics in artificial spin ice |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2306.07388 |