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Correlation holes and slow dynamics induced by fractional statistics in gapped quantum spin liquids

Realistic model Hamiltonians for quantum spin liquids frequently exhibit a large separation of energy scales between their elementary excitations. At intermediate, experimentally relevant temperatures, some excitations are sparse and hop coherently, whereas others are thermally incoherent and dense....

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Autores principales: Hart, Oliver, Wan, Yuan, Castelnovo, Claudio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7935948/
https://www.ncbi.nlm.nih.gov/pubmed/33674564
http://dx.doi.org/10.1038/s41467-021-21495-8
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author Hart, Oliver
Wan, Yuan
Castelnovo, Claudio
author_facet Hart, Oliver
Wan, Yuan
Castelnovo, Claudio
author_sort Hart, Oliver
collection PubMed
description Realistic model Hamiltonians for quantum spin liquids frequently exhibit a large separation of energy scales between their elementary excitations. At intermediate, experimentally relevant temperatures, some excitations are sparse and hop coherently, whereas others are thermally incoherent and dense. Here, we study the interplay of two such species of quasiparticle, dubbed spinons and visons, which are subject to nontrivial mutual statistics – one of the hallmarks of quantum spin liquid behaviour. Our results for [Formula: see text] quantum spin liquids show an intriguing feedback mechanism, akin to the Nagaoka effect, whereby spinons become localised on temperature-dependent patches of expelled visons. This phenomenon has important consequences for the thermodynamic and transport properties of the system, as well as for its response to quenches in temperature. We argue that these effects can be measured in experiments and may provide viable avenues for obtaining signatures of quantum spin liquid behaviour.
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spelling pubmed-79359482021-03-21 Correlation holes and slow dynamics induced by fractional statistics in gapped quantum spin liquids Hart, Oliver Wan, Yuan Castelnovo, Claudio Nat Commun Article Realistic model Hamiltonians for quantum spin liquids frequently exhibit a large separation of energy scales between their elementary excitations. At intermediate, experimentally relevant temperatures, some excitations are sparse and hop coherently, whereas others are thermally incoherent and dense. Here, we study the interplay of two such species of quasiparticle, dubbed spinons and visons, which are subject to nontrivial mutual statistics – one of the hallmarks of quantum spin liquid behaviour. Our results for [Formula: see text] quantum spin liquids show an intriguing feedback mechanism, akin to the Nagaoka effect, whereby spinons become localised on temperature-dependent patches of expelled visons. This phenomenon has important consequences for the thermodynamic and transport properties of the system, as well as for its response to quenches in temperature. We argue that these effects can be measured in experiments and may provide viable avenues for obtaining signatures of quantum spin liquid behaviour. Nature Publishing Group UK 2021-03-05 /pmc/articles/PMC7935948/ /pubmed/33674564 http://dx.doi.org/10.1038/s41467-021-21495-8 Text en © The Author(s) 2021 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
Hart, Oliver
Wan, Yuan
Castelnovo, Claudio
Correlation holes and slow dynamics induced by fractional statistics in gapped quantum spin liquids
title Correlation holes and slow dynamics induced by fractional statistics in gapped quantum spin liquids
title_full Correlation holes and slow dynamics induced by fractional statistics in gapped quantum spin liquids
title_fullStr Correlation holes and slow dynamics induced by fractional statistics in gapped quantum spin liquids
title_full_unstemmed Correlation holes and slow dynamics induced by fractional statistics in gapped quantum spin liquids
title_short Correlation holes and slow dynamics induced by fractional statistics in gapped quantum spin liquids
title_sort correlation holes and slow dynamics induced by fractional statistics in gapped quantum spin liquids
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7935948/
https://www.ncbi.nlm.nih.gov/pubmed/33674564
http://dx.doi.org/10.1038/s41467-021-21495-8
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