Emergent topological fields and relativistic phonons within the thermoelectricity in topological insulators

Abstract Topological edge states are predicted to be responsible for the high efficient thermoelectric response of topological insulators, currently the best thermoelectric materials. However, to explain their figure of merit the coexistence of topological electrons, entropy and phonons can not be c...

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Autores principales:	Daniel Faílde, Daniel Baldomir
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e56089ad274e4c709ad0fa29852248d3
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spelling	oai:doaj.org-article:e56089ad274e4c709ad0fa29852248d32021-12-02T16:14:17ZEmergent topological fields and relativistic phonons within the thermoelectricity in topological insulators10.1038/s41598-021-93667-x2045-2322https://doaj.org/article/e56089ad274e4c709ad0fa29852248d32021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93667-xhttps://doaj.org/toc/2045-2322Abstract Topological edge states are predicted to be responsible for the high efficient thermoelectric response of topological insulators, currently the best thermoelectric materials. However, to explain their figure of merit the coexistence of topological electrons, entropy and phonons can not be considered independently. In a background that puts together electrodynamics and topology, through an expression for the topological intrinsic field, we treat relativistic phonons within the topological surface showing their ability to modulate the Berry curvature of the bands and then playing a fundamental role in the thermoelectric effect. Finally, we show how the topological insulators under such relativistic thermal excitations keep time reversal symmetry allowing the observation of high figures of merit at high temperatures. The emergence of this new intrinsic topological field and other constraints are suitable to have experimental consequences opening new possibilities of improving the efficiency of this topological effect for their based technology.Daniel FaíldeDaniel BaldomirNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Daniel Faílde Daniel Baldomir Emergent topological fields and relativistic phonons within the thermoelectricity in topological insulators
description	Abstract Topological edge states are predicted to be responsible for the high efficient thermoelectric response of topological insulators, currently the best thermoelectric materials. However, to explain their figure of merit the coexistence of topological electrons, entropy and phonons can not be considered independently. In a background that puts together electrodynamics and topology, through an expression for the topological intrinsic field, we treat relativistic phonons within the topological surface showing their ability to modulate the Berry curvature of the bands and then playing a fundamental role in the thermoelectric effect. Finally, we show how the topological insulators under such relativistic thermal excitations keep time reversal symmetry allowing the observation of high figures of merit at high temperatures. The emergence of this new intrinsic topological field and other constraints are suitable to have experimental consequences opening new possibilities of improving the efficiency of this topological effect for their based technology.
format	article
author	Daniel Faílde Daniel Baldomir
author_facet	Daniel Faílde Daniel Baldomir
author_sort	Daniel Faílde
title	Emergent topological fields and relativistic phonons within the thermoelectricity in topological insulators
title_short	Emergent topological fields and relativistic phonons within the thermoelectricity in topological insulators
title_full	Emergent topological fields and relativistic phonons within the thermoelectricity in topological insulators
title_fullStr	Emergent topological fields and relativistic phonons within the thermoelectricity in topological insulators
title_full_unstemmed	Emergent topological fields and relativistic phonons within the thermoelectricity in topological insulators
title_sort	emergent topological fields and relativistic phonons within the thermoelectricity in topological insulators
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e56089ad274e4c709ad0fa29852248d3
work_keys_str_mv	AT danielfailde emergenttopologicalfieldsandrelativisticphononswithinthethermoelectricityintopologicalinsulators AT danielbaldomir emergenttopologicalfieldsandrelativisticphononswithinthethermoelectricityintopologicalinsulators
_version_	1718384323958145024

Emergent topological fields and relativistic phonons within the thermoelectricity in topological insulators

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