Phonons, electrons and thermal transport in Planckian high T c materials

Abstract The room-temperature thermal diffusivity of high T c materials is dominated by phonons. This allows the scattering of phonons by electrons to be discerned. We argue that the measured strength of this scattering suggests a converse Planckian scattering of electrons by phonons across the room...

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Autores principales:	Connie H. Mousatov, Sean A. Hartnoll
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
Acceso en línea:	https://doaj.org/article/757595d149a041efa627034fdb233e59
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spelling	oai:doaj.org-article:757595d149a041efa627034fdb233e592021-12-02T18:51:38ZPhonons, electrons and thermal transport in Planckian high T c materials10.1038/s41535-021-00383-w2397-4648https://doaj.org/article/757595d149a041efa627034fdb233e592021-09-01T00:00:00Zhttps://doi.org/10.1038/s41535-021-00383-whttps://doaj.org/toc/2397-4648Abstract The room-temperature thermal diffusivity of high T c materials is dominated by phonons. This allows the scattering of phonons by electrons to be discerned. We argue that the measured strength of this scattering suggests a converse Planckian scattering of electrons by phonons across the room-temperature phase diagram of these materials. Consistent with this conclusion, the temperature derivative of the resistivity of strongly overdoped cuprates is noted to show a kink at a little below 200 K that we argue should be understood as the onset of a high-temperature Planckian T-linear scattering of electrons by classical phonons. This kink continuously disappears toward optimal doping, even while strong scattering of phonons by electrons remains visible in the thermal diffusivity, sharpening the long-standing puzzle of the lack of a feature in the T-linear resistivity at optimal doping associated with the onset of phonon scattering.Connie H. MousatovSean A. HartnollNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 6, Iss 1, Pp 1-6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 Connie H. Mousatov Sean A. Hartnoll Phonons, electrons and thermal transport in Planckian high T c materials
description	Abstract The room-temperature thermal diffusivity of high T c materials is dominated by phonons. This allows the scattering of phonons by electrons to be discerned. We argue that the measured strength of this scattering suggests a converse Planckian scattering of electrons by phonons across the room-temperature phase diagram of these materials. Consistent with this conclusion, the temperature derivative of the resistivity of strongly overdoped cuprates is noted to show a kink at a little below 200 K that we argue should be understood as the onset of a high-temperature Planckian T-linear scattering of electrons by classical phonons. This kink continuously disappears toward optimal doping, even while strong scattering of phonons by electrons remains visible in the thermal diffusivity, sharpening the long-standing puzzle of the lack of a feature in the T-linear resistivity at optimal doping associated with the onset of phonon scattering.
format	article
author	Connie H. Mousatov Sean A. Hartnoll
author_facet	Connie H. Mousatov Sean A. Hartnoll
author_sort	Connie H. Mousatov
title	Phonons, electrons and thermal transport in Planckian high T c materials
title_short	Phonons, electrons and thermal transport in Planckian high T c materials
title_full	Phonons, electrons and thermal transport in Planckian high T c materials
title_fullStr	Phonons, electrons and thermal transport in Planckian high T c materials
title_full_unstemmed	Phonons, electrons and thermal transport in Planckian high T c materials
title_sort	phonons, electrons and thermal transport in planckian high t c materials
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/757595d149a041efa627034fdb233e59
work_keys_str_mv	AT conniehmousatov phononselectronsandthermaltransportinplanckianhightcmaterials AT seanahartnoll phononselectronsandthermaltransportinplanckianhightcmaterials
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Phonons, electrons and thermal transport in Planckian high T c materials

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