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Effects of magnetic monopoles charge on the cracking reversal processes in artificial square ices
In this paper we perform nanofabrication of square artificial spin ices with different lattice parameters, in order to investigate the roles of vertex excitation on the features of the system. In particular, the character of magnetic charge distribution asymmetry on the vertices are observed under m...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7305124/ https://www.ncbi.nlm.nih.gov/pubmed/32561787 http://dx.doi.org/10.1038/s41598-020-66794-0 |
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author | de Paiva, T. S. Rodrigues, J. H. Mól, L. A. S. Pereira, A. R. Borme, J. Freitas, P. P. de Araujo, C. I. L. |
author_facet | de Paiva, T. S. Rodrigues, J. H. Mól, L. A. S. Pereira, A. R. Borme, J. Freitas, P. P. de Araujo, C. I. L. |
author_sort | de Paiva, T. S. |
collection | PubMed |
description | In this paper we perform nanofabrication of square artificial spin ices with different lattice parameters, in order to investigate the roles of vertex excitation on the features of the system. In particular, the character of magnetic charge distribution asymmetry on the vertices are observed under magnetic hysteresis loop experiments. We then compare our results with simulation using an emergent Hamiltonian containing objects such as magnetic monopoles and dipoles in the vertices of the array (instead of the usual Hamiltonian based on the dipolar interactions among the magnetic nanoislands). All possible interactions between these objects are considered (monopole-monopole, monopole-dipole and dipole-dipole). Using realistic parameters we observe very good match between experiments and theory, which allow us to better understand the system dynamics in function of monopole charge intensity. |
format | Online Article Text |
id | pubmed-7305124 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-73051242020-06-22 Effects of magnetic monopoles charge on the cracking reversal processes in artificial square ices de Paiva, T. S. Rodrigues, J. H. Mól, L. A. S. Pereira, A. R. Borme, J. Freitas, P. P. de Araujo, C. I. L. Sci Rep Article In this paper we perform nanofabrication of square artificial spin ices with different lattice parameters, in order to investigate the roles of vertex excitation on the features of the system. In particular, the character of magnetic charge distribution asymmetry on the vertices are observed under magnetic hysteresis loop experiments. We then compare our results with simulation using an emergent Hamiltonian containing objects such as magnetic monopoles and dipoles in the vertices of the array (instead of the usual Hamiltonian based on the dipolar interactions among the magnetic nanoislands). All possible interactions between these objects are considered (monopole-monopole, monopole-dipole and dipole-dipole). Using realistic parameters we observe very good match between experiments and theory, which allow us to better understand the system dynamics in function of monopole charge intensity. Nature Publishing Group UK 2020-06-19 /pmc/articles/PMC7305124/ /pubmed/32561787 http://dx.doi.org/10.1038/s41598-020-66794-0 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article de Paiva, T. S. Rodrigues, J. H. Mól, L. A. S. Pereira, A. R. Borme, J. Freitas, P. P. de Araujo, C. I. L. Effects of magnetic monopoles charge on the cracking reversal processes in artificial square ices |
title | Effects of magnetic monopoles charge on the cracking reversal processes in artificial square ices |
title_full | Effects of magnetic monopoles charge on the cracking reversal processes in artificial square ices |
title_fullStr | Effects of magnetic monopoles charge on the cracking reversal processes in artificial square ices |
title_full_unstemmed | Effects of magnetic monopoles charge on the cracking reversal processes in artificial square ices |
title_short | Effects of magnetic monopoles charge on the cracking reversal processes in artificial square ices |
title_sort | effects of magnetic monopoles charge on the cracking reversal processes in artificial square ices |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7305124/ https://www.ncbi.nlm.nih.gov/pubmed/32561787 http://dx.doi.org/10.1038/s41598-020-66794-0 |
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