Pressure-induced superconductivity and modification of Fermi surface in type-II Weyl semimetal NbIrTe4

Abstract Weyl semimetals (WSMs) hosting Weyl points (WPs) with different chiralities attract great interest as an object to study chirality-related physical properties, topological phase transitions, and topological superconductivity. Quantum oscillation measurements and theoretical calculations imp...

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Autores principales:	Qing-Ge Mu, Feng-Ren Fan, Horst Borrmann, Walter Schnelle, Yan Sun, Claudia Felser, Sergey Medvedev
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/15c51a1212ce4799b34831b8d08ddfee
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spelling	oai:doaj.org-article:15c51a1212ce4799b34831b8d08ddfee2021-12-02T15:56:48ZPressure-induced superconductivity and modification of Fermi surface in type-II Weyl semimetal NbIrTe410.1038/s41535-021-00357-y2397-4648https://doaj.org/article/15c51a1212ce4799b34831b8d08ddfee2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41535-021-00357-yhttps://doaj.org/toc/2397-4648Abstract Weyl semimetals (WSMs) hosting Weyl points (WPs) with different chiralities attract great interest as an object to study chirality-related physical properties, topological phase transitions, and topological superconductivity. Quantum oscillation measurements and theoretical calculations imply that the type-II WPs in NbIrTe4 are robust against the shift of chemical potential making it a good material for pressure studies on topological properties. Here we report the results of electrical transport property measurements and Raman spectroscopy studies under pressures up to 65.5 GPa accompanied by theoretical electronic structure calculations. Hall resistivity data reveal an electronic transition indicated by a change of the charge carrier from multiband character to hole-type at ~12 GPa, in agreement with the calculated Fermi surface. An onset of superconducting transition is observed at pressures above 39 GPa, with critical temperature increasing as pressure increases. Moreover, theoretical calculations indicate that WPs persist up to highly reduced unit cell volume (−17%), manifesting that NbIrTe4 is a candidate of topological superconductor.Qing-Ge MuFeng-Ren FanHorst BorrmannWalter SchnelleYan SunClaudia FelserSergey MedvedevNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 6, Iss 1, Pp 1-7 (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 Qing-Ge Mu Feng-Ren Fan Horst Borrmann Walter Schnelle Yan Sun Claudia Felser Sergey Medvedev Pressure-induced superconductivity and modification of Fermi surface in type-II Weyl semimetal NbIrTe4
description	Abstract Weyl semimetals (WSMs) hosting Weyl points (WPs) with different chiralities attract great interest as an object to study chirality-related physical properties, topological phase transitions, and topological superconductivity. Quantum oscillation measurements and theoretical calculations imply that the type-II WPs in NbIrTe4 are robust against the shift of chemical potential making it a good material for pressure studies on topological properties. Here we report the results of electrical transport property measurements and Raman spectroscopy studies under pressures up to 65.5 GPa accompanied by theoretical electronic structure calculations. Hall resistivity data reveal an electronic transition indicated by a change of the charge carrier from multiband character to hole-type at ~12 GPa, in agreement with the calculated Fermi surface. An onset of superconducting transition is observed at pressures above 39 GPa, with critical temperature increasing as pressure increases. Moreover, theoretical calculations indicate that WPs persist up to highly reduced unit cell volume (−17%), manifesting that NbIrTe4 is a candidate of topological superconductor.
format	article
author	Qing-Ge Mu Feng-Ren Fan Horst Borrmann Walter Schnelle Yan Sun Claudia Felser Sergey Medvedev
author_facet	Qing-Ge Mu Feng-Ren Fan Horst Borrmann Walter Schnelle Yan Sun Claudia Felser Sergey Medvedev
author_sort	Qing-Ge Mu
title	Pressure-induced superconductivity and modification of Fermi surface in type-II Weyl semimetal NbIrTe4
title_short	Pressure-induced superconductivity and modification of Fermi surface in type-II Weyl semimetal NbIrTe4
title_full	Pressure-induced superconductivity and modification of Fermi surface in type-II Weyl semimetal NbIrTe4
title_fullStr	Pressure-induced superconductivity and modification of Fermi surface in type-II Weyl semimetal NbIrTe4
title_full_unstemmed	Pressure-induced superconductivity and modification of Fermi surface in type-II Weyl semimetal NbIrTe4
title_sort	pressure-induced superconductivity and modification of fermi surface in type-ii weyl semimetal nbirte4
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/15c51a1212ce4799b34831b8d08ddfee
work_keys_str_mv	AT qinggemu pressureinducedsuperconductivityandmodificationoffermisurfaceintypeiiweylsemimetalnbirte4 AT fengrenfan pressureinducedsuperconductivityandmodificationoffermisurfaceintypeiiweylsemimetalnbirte4 AT horstborrmann pressureinducedsuperconductivityandmodificationoffermisurfaceintypeiiweylsemimetalnbirte4 AT walterschnelle pressureinducedsuperconductivityandmodificationoffermisurfaceintypeiiweylsemimetalnbirte4 AT yansun pressureinducedsuperconductivityandmodificationoffermisurfaceintypeiiweylsemimetalnbirte4 AT claudiafelser pressureinducedsuperconductivityandmodificationoffermisurfaceintypeiiweylsemimetalnbirte4 AT sergeymedvedev pressureinducedsuperconductivityandmodificationoffermisurfaceintypeiiweylsemimetalnbirte4
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Pressure-induced superconductivity and modification of Fermi surface in type-II Weyl semimetal NbIrTe4

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