Controlled creation and annihilation of stringless robust emergent magnetic monopoles in artificial spin ice
Magnetic analogue of an isolated free electric charge, i.e., a magnet with a single north or south pole, is a long sought-after particle which remains elusive so far. In magnetically frustrated pyrochlore solids, a classical analogue of monopole was observed as a result of excitation of spin ice ver...
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ftdatacite:10.48550/arxiv.2011.06860 2023-05-15T18:22:42+02:00 Controlled creation and annihilation of stringless robust emergent magnetic monopoles in artificial spin ice Keswani, N. Lopes, R. Nakajima, Y. Singh, R. Chauhan, N. Som, T. Kumar, S. Pereira, A. R. Das, P. 2020 https://dx.doi.org/10.48550/arxiv.2011.06860 https://arxiv.org/abs/2011.06860 unknown arXiv https://dx.doi.org/10.1038/s41598-021-92877-7 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Mesoscale and Nanoscale Physics cond-mat.mes-hall FOS Physical sciences article-journal Article ScholarlyArticle Text 2020 ftdatacite https://doi.org/10.48550/arxiv.2011.06860 https://doi.org/10.1038/s41598-021-92877-7 2022-03-10T15:05:57Z Magnetic analogue of an isolated free electric charge, i.e., a magnet with a single north or south pole, is a long sought-after particle which remains elusive so far. In magnetically frustrated pyrochlore solids, a classical analogue of monopole was observed as a result of excitation of spin ice vertices. Direct visualization of such excitations were proposed and later confirmed in analogous artificial spin ice (ASI) systems of square as well as Kagome geometries. However, such charged vertices are randomly created as they are thermally driven and are always associated with corresponding emergent antimonopoles of equal and opposite charges connected by observable strings. Here, we demonstrate a controlled stabilisation of a robust isolated emergent monopole state in individual square ASI vertices by application of an external magnetic field. The excitation conserves the magnetic charge without the involvement of a corresponding antimonopole. Well supported by Monte Carlo simulations our experimental results enable, in absence of a true elemental magnetic monopole, creation of electron vortices and studying electrodynamics in presence of a monopole field in a solid state environment. : 6 pages, 7 figures Article in Journal/Newspaper South pole DataCite Metadata Store (German National Library of Science and Technology) South Pole |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
Mesoscale and Nanoscale Physics cond-mat.mes-hall FOS Physical sciences |
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Mesoscale and Nanoscale Physics cond-mat.mes-hall FOS Physical sciences Keswani, N. Lopes, R. Nakajima, Y. Singh, R. Chauhan, N. Som, T. Kumar, S. Pereira, A. R. Das, P. Controlled creation and annihilation of stringless robust emergent magnetic monopoles in artificial spin ice |
topic_facet |
Mesoscale and Nanoscale Physics cond-mat.mes-hall FOS Physical sciences |
description |
Magnetic analogue of an isolated free electric charge, i.e., a magnet with a single north or south pole, is a long sought-after particle which remains elusive so far. In magnetically frustrated pyrochlore solids, a classical analogue of monopole was observed as a result of excitation of spin ice vertices. Direct visualization of such excitations were proposed and later confirmed in analogous artificial spin ice (ASI) systems of square as well as Kagome geometries. However, such charged vertices are randomly created as they are thermally driven and are always associated with corresponding emergent antimonopoles of equal and opposite charges connected by observable strings. Here, we demonstrate a controlled stabilisation of a robust isolated emergent monopole state in individual square ASI vertices by application of an external magnetic field. The excitation conserves the magnetic charge without the involvement of a corresponding antimonopole. Well supported by Monte Carlo simulations our experimental results enable, in absence of a true elemental magnetic monopole, creation of electron vortices and studying electrodynamics in presence of a monopole field in a solid state environment. : 6 pages, 7 figures |
format |
Article in Journal/Newspaper |
author |
Keswani, N. Lopes, R. Nakajima, Y. Singh, R. Chauhan, N. Som, T. Kumar, S. Pereira, A. R. Das, P. |
author_facet |
Keswani, N. Lopes, R. Nakajima, Y. Singh, R. Chauhan, N. Som, T. Kumar, S. Pereira, A. R. Das, P. |
author_sort |
Keswani, N. |
title |
Controlled creation and annihilation of stringless robust emergent magnetic monopoles in artificial spin ice |
title_short |
Controlled creation and annihilation of stringless robust emergent magnetic monopoles in artificial spin ice |
title_full |
Controlled creation and annihilation of stringless robust emergent magnetic monopoles in artificial spin ice |
title_fullStr |
Controlled creation and annihilation of stringless robust emergent magnetic monopoles in artificial spin ice |
title_full_unstemmed |
Controlled creation and annihilation of stringless robust emergent magnetic monopoles in artificial spin ice |
title_sort |
controlled creation and annihilation of stringless robust emergent magnetic monopoles in artificial spin ice |
publisher |
arXiv |
publishDate |
2020 |
url |
https://dx.doi.org/10.48550/arxiv.2011.06860 https://arxiv.org/abs/2011.06860 |
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South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
https://dx.doi.org/10.1038/s41598-021-92877-7 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.48550/arxiv.2011.06860 https://doi.org/10.1038/s41598-021-92877-7 |
_version_ |
1766202106498252800 |