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Turbulent hydrodynamics in strongly correlated Kagome metals

A current challenge in condensed matter physics is the realization of strongly correlated, viscous electron fluids. These fluids can be described by holography, that is, by mapping them onto a weakly curved gravitational theory via gauge/gravity duality. The canonical system considered for realizati...

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Autores principales: Di Sante, Domenico, Erdmenger, Johanna, Greiter, Martin, Matthaiakakis, Ioannis, Meyer, René, Fernández, David Rodríguez, Thomale, Ronny, van Loon, Erik, Wehling, Tim
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7417536/
https://www.ncbi.nlm.nih.gov/pubmed/32778647
http://dx.doi.org/10.1038/s41467-020-17663-x
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author Di Sante, Domenico
Erdmenger, Johanna
Greiter, Martin
Matthaiakakis, Ioannis
Meyer, René
Fernández, David Rodríguez
Thomale, Ronny
van Loon, Erik
Wehling, Tim
author_facet Di Sante, Domenico
Erdmenger, Johanna
Greiter, Martin
Matthaiakakis, Ioannis
Meyer, René
Fernández, David Rodríguez
Thomale, Ronny
van Loon, Erik
Wehling, Tim
author_sort Di Sante, Domenico
collection PubMed
description A current challenge in condensed matter physics is the realization of strongly correlated, viscous electron fluids. These fluids can be described by holography, that is, by mapping them onto a weakly curved gravitational theory via gauge/gravity duality. The canonical system considered for realizations has been graphene. In this work, we show that Kagome systems with electron fillings adjusted to the Dirac nodes provide a much more compelling platform for realizations of viscous electron fluids, including non-linear effects such as turbulence. In particular, we find that in Scandium Herbertsmithite, the fine-structure constant, which measures the effective Coulomb interaction, is enhanced by a factor of about 3.2 as compared to graphene. We employ holography to estimate the ratio of the shear viscosity over the entropy density in Sc-Herbertsmithite, and find it about three times smaller than in graphene. These findings put the turbulent flow regime described by holography within the reach of experiments.
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spelling pubmed-74175362020-08-17 Turbulent hydrodynamics in strongly correlated Kagome metals Di Sante, Domenico Erdmenger, Johanna Greiter, Martin Matthaiakakis, Ioannis Meyer, René Fernández, David Rodríguez Thomale, Ronny van Loon, Erik Wehling, Tim Nat Commun Article A current challenge in condensed matter physics is the realization of strongly correlated, viscous electron fluids. These fluids can be described by holography, that is, by mapping them onto a weakly curved gravitational theory via gauge/gravity duality. The canonical system considered for realizations has been graphene. In this work, we show that Kagome systems with electron fillings adjusted to the Dirac nodes provide a much more compelling platform for realizations of viscous electron fluids, including non-linear effects such as turbulence. In particular, we find that in Scandium Herbertsmithite, the fine-structure constant, which measures the effective Coulomb interaction, is enhanced by a factor of about 3.2 as compared to graphene. We employ holography to estimate the ratio of the shear viscosity over the entropy density in Sc-Herbertsmithite, and find it about three times smaller than in graphene. These findings put the turbulent flow regime described by holography within the reach of experiments. Nature Publishing Group UK 2020-08-10 /pmc/articles/PMC7417536/ /pubmed/32778647 http://dx.doi.org/10.1038/s41467-020-17663-x 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
Di Sante, Domenico
Erdmenger, Johanna
Greiter, Martin
Matthaiakakis, Ioannis
Meyer, René
Fernández, David Rodríguez
Thomale, Ronny
van Loon, Erik
Wehling, Tim
Turbulent hydrodynamics in strongly correlated Kagome metals
title Turbulent hydrodynamics in strongly correlated Kagome metals
title_full Turbulent hydrodynamics in strongly correlated Kagome metals
title_fullStr Turbulent hydrodynamics in strongly correlated Kagome metals
title_full_unstemmed Turbulent hydrodynamics in strongly correlated Kagome metals
title_short Turbulent hydrodynamics in strongly correlated Kagome metals
title_sort turbulent hydrodynamics in strongly correlated kagome metals
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7417536/
https://www.ncbi.nlm.nih.gov/pubmed/32778647
http://dx.doi.org/10.1038/s41467-020-17663-x
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