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Transport and Energetic Properties of a Ring of Interacting Spins Coupled to Heat Baths

We study the heat and spin transport properties in a ring of interacting spins coupled to heat baths at different temperatures. We show that interactions, by inducing avoided crossings, can be a means to tune both the total heat current flowing between the ring and the baths, and the way it flows th...

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Detalles Bibliográficos
Autores principales: Xu, Xiansong, Choo, Kenny, Balachandran, Vinitha, Poletti, Dario
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7514709/
https://www.ncbi.nlm.nih.gov/pubmed/33266943
http://dx.doi.org/10.3390/e21030228
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author Xu, Xiansong
Choo, Kenny
Balachandran, Vinitha
Poletti, Dario
author_facet Xu, Xiansong
Choo, Kenny
Balachandran, Vinitha
Poletti, Dario
author_sort Xu, Xiansong
collection PubMed
description We study the heat and spin transport properties in a ring of interacting spins coupled to heat baths at different temperatures. We show that interactions, by inducing avoided crossings, can be a means to tune both the total heat current flowing between the ring and the baths, and the way it flows through the system. In particular, we recognize three regimes in which the heat current flows clockwise, counterclockwise, and in parallel. The temperature bias between the baths also induces a spin current within the ring, whose direction and magnitude can be tuned by the interaction. Lastly, we show how the ergotropy of the nonequilibrium steady state can increase significantly near the avoided crossings.
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spelling pubmed-75147092020-11-09 Transport and Energetic Properties of a Ring of Interacting Spins Coupled to Heat Baths Xu, Xiansong Choo, Kenny Balachandran, Vinitha Poletti, Dario Entropy (Basel) Article We study the heat and spin transport properties in a ring of interacting spins coupled to heat baths at different temperatures. We show that interactions, by inducing avoided crossings, can be a means to tune both the total heat current flowing between the ring and the baths, and the way it flows through the system. In particular, we recognize three regimes in which the heat current flows clockwise, counterclockwise, and in parallel. The temperature bias between the baths also induces a spin current within the ring, whose direction and magnitude can be tuned by the interaction. Lastly, we show how the ergotropy of the nonequilibrium steady state can increase significantly near the avoided crossings. MDPI 2019-02-27 /pmc/articles/PMC7514709/ /pubmed/33266943 http://dx.doi.org/10.3390/e21030228 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Xu, Xiansong
Choo, Kenny
Balachandran, Vinitha
Poletti, Dario
Transport and Energetic Properties of a Ring of Interacting Spins Coupled to Heat Baths
title Transport and Energetic Properties of a Ring of Interacting Spins Coupled to Heat Baths
title_full Transport and Energetic Properties of a Ring of Interacting Spins Coupled to Heat Baths
title_fullStr Transport and Energetic Properties of a Ring of Interacting Spins Coupled to Heat Baths
title_full_unstemmed Transport and Energetic Properties of a Ring of Interacting Spins Coupled to Heat Baths
title_short Transport and Energetic Properties of a Ring of Interacting Spins Coupled to Heat Baths
title_sort transport and energetic properties of a ring of interacting spins coupled to heat baths
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7514709/
https://www.ncbi.nlm.nih.gov/pubmed/33266943
http://dx.doi.org/10.3390/e21030228
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