Magnetic order in nanoscale gyroid networks
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866911883960778752 |
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| author | Koshikawa, Ami S. Llandro, Justin Ohzeki, Masayuki Fukami, Shunsuke Ohno, Hideo Leo, Naëmi |
| author_facet | Koshikawa, Ami S. Llandro, Justin Ohzeki, Masayuki Fukami, Shunsuke Ohno, Hideo Leo, Naëmi |
| contents | Three-dimensional magnetic metamaterials feature interesting phenomena that arise from a delicate interplay of material properties, local anisotropy, curvature, and connectivity. A particularly interesting magnetic lattice that combines these aspects is that of nanoscale gyroids, with a highly-interconnected chiral network with local three-connectivity reminiscent of three-dimensional artificial spin ices. Here, we use finite-element micromagnetic simulations to elucidate the anisotropic behaviour of nanoscale nickel gyroid networks at applied fields and at remanence. We simplify the description of the micromagnetic spin states with a macrospin model to explain the anistropic global response, to quantify the extent of ice-like correlations, and to discuss qualitative features of the anisotropic magnetoresistance in the three-dimensional network. Our results demonstrate the large variability of the magnetic order in extended gyroid networks, which might enable future spintronic functionalities, including neuromorphic computing and non-reciprocal transport. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_05816 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Magnetic order in nanoscale gyroid networks Koshikawa, Ami S. Llandro, Justin Ohzeki, Masayuki Fukami, Shunsuke Ohno, Hideo Leo, Naëmi Mesoscale and Nanoscale Physics Three-dimensional magnetic metamaterials feature interesting phenomena that arise from a delicate interplay of material properties, local anisotropy, curvature, and connectivity. A particularly interesting magnetic lattice that combines these aspects is that of nanoscale gyroids, with a highly-interconnected chiral network with local three-connectivity reminiscent of three-dimensional artificial spin ices. Here, we use finite-element micromagnetic simulations to elucidate the anisotropic behaviour of nanoscale nickel gyroid networks at applied fields and at remanence. We simplify the description of the micromagnetic spin states with a macrospin model to explain the anistropic global response, to quantify the extent of ice-like correlations, and to discuss qualitative features of the anisotropic magnetoresistance in the three-dimensional network. Our results demonstrate the large variability of the magnetic order in extended gyroid networks, which might enable future spintronic functionalities, including neuromorphic computing and non-reciprocal transport. |
| title | Magnetic order in nanoscale gyroid networks |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2303.05816 |