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Thermodynamics of emergent magnetic charge screening in artificial spin ice
Electric charge screening is a fundamental principle governing the behaviour in a variety of systems in nature. Through reconfiguration of the local environment, the Coulomb attraction between electric charges is decreased, leading, for example, to the creation of polaron states in solids or hydrati...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5040513/ https://www.ncbi.nlm.nih.gov/pubmed/27581972 http://dx.doi.org/10.1038/ncomms12635 |
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author | Farhan, Alan Scholl, Andreas Petersen, Charlotte F. Anghinolfi, Luca Wuth, Clemens Dhuey, Scott Chopdekar, Rajesh V. Mellado, Paula Alava, Mikko J. van Dijken, Sebastiaan |
author_facet | Farhan, Alan Scholl, Andreas Petersen, Charlotte F. Anghinolfi, Luca Wuth, Clemens Dhuey, Scott Chopdekar, Rajesh V. Mellado, Paula Alava, Mikko J. van Dijken, Sebastiaan |
author_sort | Farhan, Alan |
collection | PubMed |
description | Electric charge screening is a fundamental principle governing the behaviour in a variety of systems in nature. Through reconfiguration of the local environment, the Coulomb attraction between electric charges is decreased, leading, for example, to the creation of polaron states in solids or hydration shells around proteins in water. Here, we directly visualize the real-time creation and decay of screened magnetic charge configurations in a two-dimensional artificial spin ice system, the dipolar dice lattice. By comparing the temperature dependent occurrence of screened and unscreened emergent magnetic charge defects, we determine that screened magnetic charges are indeed a result of local energy reduction and appear as a transient minimum energy state before the system relaxes towards the predicted ground state. These results highlight the important role of emergent magnetic charges in artificial spin ice, giving rise to screened charge excitations and the emergence of exotic low-temperature configurations. |
format | Online Article Text |
id | pubmed-5040513 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-50405132016-10-13 Thermodynamics of emergent magnetic charge screening in artificial spin ice Farhan, Alan Scholl, Andreas Petersen, Charlotte F. Anghinolfi, Luca Wuth, Clemens Dhuey, Scott Chopdekar, Rajesh V. Mellado, Paula Alava, Mikko J. van Dijken, Sebastiaan Nat Commun Article Electric charge screening is a fundamental principle governing the behaviour in a variety of systems in nature. Through reconfiguration of the local environment, the Coulomb attraction between electric charges is decreased, leading, for example, to the creation of polaron states in solids or hydration shells around proteins in water. Here, we directly visualize the real-time creation and decay of screened magnetic charge configurations in a two-dimensional artificial spin ice system, the dipolar dice lattice. By comparing the temperature dependent occurrence of screened and unscreened emergent magnetic charge defects, we determine that screened magnetic charges are indeed a result of local energy reduction and appear as a transient minimum energy state before the system relaxes towards the predicted ground state. These results highlight the important role of emergent magnetic charges in artificial spin ice, giving rise to screened charge excitations and the emergence of exotic low-temperature configurations. Nature Publishing Group 2016-09-01 /pmc/articles/PMC5040513/ /pubmed/27581972 http://dx.doi.org/10.1038/ncomms12635 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Farhan, Alan Scholl, Andreas Petersen, Charlotte F. Anghinolfi, Luca Wuth, Clemens Dhuey, Scott Chopdekar, Rajesh V. Mellado, Paula Alava, Mikko J. van Dijken, Sebastiaan Thermodynamics of emergent magnetic charge screening in artificial spin ice |
title | Thermodynamics of emergent magnetic charge screening in artificial spin ice |
title_full | Thermodynamics of emergent magnetic charge screening in artificial spin ice |
title_fullStr | Thermodynamics of emergent magnetic charge screening in artificial spin ice |
title_full_unstemmed | Thermodynamics of emergent magnetic charge screening in artificial spin ice |
title_short | Thermodynamics of emergent magnetic charge screening in artificial spin ice |
title_sort | thermodynamics of emergent magnetic charge screening in artificial spin ice |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5040513/ https://www.ncbi.nlm.nih.gov/pubmed/27581972 http://dx.doi.org/10.1038/ncomms12635 |
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