Metallicity without quasi-particles in room-temperature strontium titanate

Correlated matter: When metals go bad An expected metallic behavior that defies existing theory is observed by researchers in France. Xiao Lin from the Laboratoire Physique et Etude de Matériaux and co-workers show that room temperature strontium titanate behaves like a so-called ‘bad’ metal. Partic...

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Autores principales:	Xiao Lin, Carl Willem Rischau, Lisa Buchauer, Alexandre Jaoui, Benoît Fauqué, Kamran Behnia
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
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/8a5e1a74bf33430686500c7f43dcf425
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spelling	oai:doaj.org-article:8a5e1a74bf33430686500c7f43dcf4252021-12-02T13:41:46ZMetallicity without quasi-particles in room-temperature strontium titanate10.1038/s41535-017-0044-52397-4648https://doaj.org/article/8a5e1a74bf33430686500c7f43dcf4252017-07-01T00:00:00Zhttps://doi.org/10.1038/s41535-017-0044-5https://doaj.org/toc/2397-4648Correlated matter: When metals go bad An expected metallic behavior that defies existing theory is observed by researchers in France. Xiao Lin from the Laboratoire Physique et Etude de Matériaux and co-workers show that room temperature strontium titanate behaves like a so-called ‘bad’ metal. Particles with an electric charge can flow through a metal with little resistance. But this resistivity increases with particle density. In conventional metals, this increase eventually stops at what is known as the Mott-Ioffe-Regel limit. Bad or strange metals, however, defy this rule and the resistivity continues to increase. This effect is thought to arise when the when the electrons work collectively, creating quasi-particles. Lin and colleagues show that this bad metal behavior can occur even in a material without quasi-particles. Instead, they argue the metallicity is caused by so-called Landauer transmission between individual dopants.Xiao LinCarl Willem RischauLisa BuchauerAlexandre JaouiBenoît FauquéKamran BehniaNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 2, Iss 1, Pp 1-8 (2017)
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 Xiao Lin Carl Willem Rischau Lisa Buchauer Alexandre Jaoui Benoît Fauqué Kamran Behnia Metallicity without quasi-particles in room-temperature strontium titanate
description	Correlated matter: When metals go bad An expected metallic behavior that defies existing theory is observed by researchers in France. Xiao Lin from the Laboratoire Physique et Etude de Matériaux and co-workers show that room temperature strontium titanate behaves like a so-called ‘bad’ metal. Particles with an electric charge can flow through a metal with little resistance. But this resistivity increases with particle density. In conventional metals, this increase eventually stops at what is known as the Mott-Ioffe-Regel limit. Bad or strange metals, however, defy this rule and the resistivity continues to increase. This effect is thought to arise when the when the electrons work collectively, creating quasi-particles. Lin and colleagues show that this bad metal behavior can occur even in a material without quasi-particles. Instead, they argue the metallicity is caused by so-called Landauer transmission between individual dopants.
format	article
author	Xiao Lin Carl Willem Rischau Lisa Buchauer Alexandre Jaoui Benoît Fauqué Kamran Behnia
author_facet	Xiao Lin Carl Willem Rischau Lisa Buchauer Alexandre Jaoui Benoît Fauqué Kamran Behnia
author_sort	Xiao Lin
title	Metallicity without quasi-particles in room-temperature strontium titanate
title_short	Metallicity without quasi-particles in room-temperature strontium titanate
title_full	Metallicity without quasi-particles in room-temperature strontium titanate
title_fullStr	Metallicity without quasi-particles in room-temperature strontium titanate
title_full_unstemmed	Metallicity without quasi-particles in room-temperature strontium titanate
title_sort	metallicity without quasi-particles in room-temperature strontium titanate
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/8a5e1a74bf33430686500c7f43dcf425
work_keys_str_mv	AT xiaolin metallicitywithoutquasiparticlesinroomtemperaturestrontiumtitanate AT carlwillemrischau metallicitywithoutquasiparticlesinroomtemperaturestrontiumtitanate AT lisabuchauer metallicitywithoutquasiparticlesinroomtemperaturestrontiumtitanate AT alexandrejaoui metallicitywithoutquasiparticlesinroomtemperaturestrontiumtitanate AT benoitfauque metallicitywithoutquasiparticlesinroomtemperaturestrontiumtitanate AT kamranbehnia metallicitywithoutquasiparticlesinroomtemperaturestrontiumtitanate
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Metallicity without quasi-particles in room-temperature strontium titanate

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