$Fermi Surface Mapping and the Nature of Charge-Density-Wave Order in the Kagome Superconductor CsV_{3}Sb_{5}$
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Fermi Surface Mapping and the Nature of Charge-Density-Wave Order in the Kagome Superconductor CsV_{3}Sb_{5}

The recently discovered family of AV_{3}Sb_{5} (A: K, Rb Cs) kagome metals possess a unique combination of nontrivial band topology, superconducting ground states, and signatures of electron correlations manifest via competing charge density wave order. Little is understood regarding the nature of t...

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Autores principales:	Brenden R. Ortiz, Samuel M. L. Teicher, Linus Kautzsch, Paul M. Sarte, Noah Ratcliff, John Harter, Jacob P. C. Ruff, Ram Seshadri, Stephen D. Wilson
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/a771c7e3da6c43e2af191981028c4e96
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spelling	oai:doaj.org-article:a771c7e3da6c43e2af191981028c4e962021-11-11T15:48:48ZFermi Surface Mapping and the Nature of Charge-Density-Wave Order in the Kagome Superconductor CsV_{3}Sb_{5}10.1103/PhysRevX.11.0410302160-3308https://doaj.org/article/a771c7e3da6c43e2af191981028c4e962021-11-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.11.041030http://doi.org/10.1103/PhysRevX.11.041030https://doaj.org/toc/2160-3308The recently discovered family of AV_{3}Sb_{5} (A: K, Rb Cs) kagome metals possess a unique combination of nontrivial band topology, superconducting ground states, and signatures of electron correlations manifest via competing charge density wave order. Little is understood regarding the nature of the charge density wave (CDW) instability inherent to these compounds and the potential correlation with the onset of a large anomalous Hall response. To understand the impact of the CDW order on the electronic structure in these systems, we present quantum oscillation measurements on single crystals of CsV_{3}Sb_{5}. Our data provide direct evidence that the CDW invokes a substantial reconstruction of the Fermi surface pockets associated with the vanadium orbitals and the kagome lattice framework. In conjunction with density functional theory modeling, we are able to identify split oscillation frequencies originating from reconstructed pockets built from vanadium orbitals and Dirac-like bands. Complementary diffraction measurements are further able to demonstrate that the CDW instability has a correlated phasing of distortions between neighboring V_{3}Sb_{5} planes, and the average structure in the CDW state is proposed. These results provide critical insights into the underlying CDW instability in AV_{3}Sb_{5} kagome metals and support minimal models of CDW order arising from within the vanadium-based kagome lattice.Brenden R. OrtizSamuel M. L. TeicherLinus KautzschPaul M. SarteNoah RatcliffJohn HarterJacob P. C. RuffRam SeshadriStephen D. WilsonAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 11, Iss 4, p 041030 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Brenden R. Ortiz Samuel M. L. Teicher Linus Kautzsch Paul M. Sarte Noah Ratcliff John Harter Jacob P. C. Ruff Ram Seshadri Stephen D. Wilson Fermi Surface Mapping and the Nature of Charge-Density-Wave Order in the Kagome Superconductor CsV_{3}Sb_{5}
description	The recently discovered family of AV_{3}Sb_{5} (A: K, Rb Cs) kagome metals possess a unique combination of nontrivial band topology, superconducting ground states, and signatures of electron correlations manifest via competing charge density wave order. Little is understood regarding the nature of the charge density wave (CDW) instability inherent to these compounds and the potential correlation with the onset of a large anomalous Hall response. To understand the impact of the CDW order on the electronic structure in these systems, we present quantum oscillation measurements on single crystals of CsV_{3}Sb_{5}. Our data provide direct evidence that the CDW invokes a substantial reconstruction of the Fermi surface pockets associated with the vanadium orbitals and the kagome lattice framework. In conjunction with density functional theory modeling, we are able to identify split oscillation frequencies originating from reconstructed pockets built from vanadium orbitals and Dirac-like bands. Complementary diffraction measurements are further able to demonstrate that the CDW instability has a correlated phasing of distortions between neighboring V_{3}Sb_{5} planes, and the average structure in the CDW state is proposed. These results provide critical insights into the underlying CDW instability in AV_{3}Sb_{5} kagome metals and support minimal models of CDW order arising from within the vanadium-based kagome lattice.
format	article
author	Brenden R. Ortiz Samuel M. L. Teicher Linus Kautzsch Paul M. Sarte Noah Ratcliff John Harter Jacob P. C. Ruff Ram Seshadri Stephen D. Wilson
author_facet	Brenden R. Ortiz Samuel M. L. Teicher Linus Kautzsch Paul M. Sarte Noah Ratcliff John Harter Jacob P. C. Ruff Ram Seshadri Stephen D. Wilson
author_sort	Brenden R. Ortiz
title	Fermi Surface Mapping and the Nature of Charge-Density-Wave Order in the Kagome Superconductor CsV_{3}Sb_{5}
title_short	Fermi Surface Mapping and the Nature of Charge-Density-Wave Order in the Kagome Superconductor CsV_{3}Sb_{5}
title_full	Fermi Surface Mapping and the Nature of Charge-Density-Wave Order in the Kagome Superconductor CsV_{3}Sb_{5}
title_fullStr	Fermi Surface Mapping and the Nature of Charge-Density-Wave Order in the Kagome Superconductor CsV_{3}Sb_{5}
title_full_unstemmed	Fermi Surface Mapping and the Nature of Charge-Density-Wave Order in the Kagome Superconductor CsV_{3}Sb_{5}
title_sort	fermi surface mapping and the nature of charge-density-wave order in the kagome superconductor csv_{3}sb_{5}
publisher	American Physical Society
publishDate	2021
url	https://doaj.org/article/a771c7e3da6c43e2af191981028c4e96
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Fermi Surface Mapping and the Nature of Charge-Density-Wave Order in the Kagome Superconductor CsV_{3}Sb_{5}

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