Controlling vortex chirality in hexagonal building blocks of artificial spin ice
We exploit dipolar coupling to control the magnetic states in assemblies of single-domain magnetic nanoislands, arranged in one, two and three adjacent hexagonal rings. On tailoring the shape anisotropy of specific islands, and thus their switching fields, we achieve particular target states with ne...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2013-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/12/125033 |
| _version_ | 1797751804015935488 |
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| author | R V Chopdekar G Duff R V Hügli E Mengotti D A Zanin L J Heyderman H B Braun |
| author_facet | R V Chopdekar G Duff R V Hügli E Mengotti D A Zanin L J Heyderman H B Braun |
| author_sort | R V Chopdekar |
| collection | DOAJ |
| description | We exploit dipolar coupling to control the magnetic states in assemblies of single-domain magnetic nanoislands, arranged in one, two and three adjacent hexagonal rings. On tailoring the shape anisotropy of specific islands, and thus their switching fields, we achieve particular target states with near perfect reliability, and are able to control the chirality of the vortex target states. The magnetic states are observed during magnetization reversal with x-ray photoemission electron microscopy and our results are generally in excellent agreement with a numerical model based on point dipoles and realistic values of disorder. We conclude with a quantitative discussion of how our results depend on disorder and the chosen bias in shape anisotropy. |
| first_indexed | 2024-03-12T16:53:53Z |
| format | Article |
| id | doaj.art-af0ac90705ce49519964f098b99bdd3e |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:53:53Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-af0ac90705ce49519964f098b99bdd3e2023-08-08T11:02:31ZengIOP PublishingNew Journal of Physics1367-26302013-01-01151212503310.1088/1367-2630/15/12/125033Controlling vortex chirality in hexagonal building blocks of artificial spin iceR V Chopdekar0G Duff1R V Hügli2E Mengotti3D A Zanin4L J Heyderman5H B Braun6Paul Scherrer Institute , CH-5232 Villigen PSI, SwitzerlandSchool of Physics, University College Dublin , Dublin 4, IrelandSchool of Physics, University College Dublin , Dublin 4, IrelandPaul Scherrer Institute , CH-5232 Villigen PSI, SwitzerlandPaul Scherrer Institute , CH-5232 Villigen PSI, SwitzerlandPaul Scherrer Institute , CH-5232 Villigen PSI, SwitzerlandSchool of Physics, University College Dublin , Dublin 4, IrelandWe exploit dipolar coupling to control the magnetic states in assemblies of single-domain magnetic nanoislands, arranged in one, two and three adjacent hexagonal rings. On tailoring the shape anisotropy of specific islands, and thus their switching fields, we achieve particular target states with near perfect reliability, and are able to control the chirality of the vortex target states. The magnetic states are observed during magnetization reversal with x-ray photoemission electron microscopy and our results are generally in excellent agreement with a numerical model based on point dipoles and realistic values of disorder. We conclude with a quantitative discussion of how our results depend on disorder and the chosen bias in shape anisotropy.https://doi.org/10.1088/1367-2630/15/12/125033 |
| spellingShingle | R V Chopdekar G Duff R V Hügli E Mengotti D A Zanin L J Heyderman H B Braun Controlling vortex chirality in hexagonal building blocks of artificial spin ice New Journal of Physics |
| title | Controlling vortex chirality in hexagonal building blocks of artificial spin ice |
| title_full | Controlling vortex chirality in hexagonal building blocks of artificial spin ice |
| title_fullStr | Controlling vortex chirality in hexagonal building blocks of artificial spin ice |
| title_full_unstemmed | Controlling vortex chirality in hexagonal building blocks of artificial spin ice |
| title_short | Controlling vortex chirality in hexagonal building blocks of artificial spin ice |
| title_sort | controlling vortex chirality in hexagonal building blocks of artificial spin ice |
| url | https://doi.org/10.1088/1367-2630/15/12/125033 |
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