Zoology of domain walls in quasi-2D correlated charge density wave of 1T-TaS2

Abstract Domain walls in correlated charge density wave compounds such as 1T-TaS2 can have distinct localized states which govern physical properties and functionalities of emerging quantum phases. However, detailed atomic and electronic structures of domain walls have largely been elusive. We ident...

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Autores principales:	Jae Whan Park, Jinwon Lee, Han Woong Yeom
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/d053fff7556d4e4ba517af8f947377cd
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spelling	oai:doaj.org-article:d053fff7556d4e4ba517af8f947377cd2021-12-02T17:04:32ZZoology of domain walls in quasi-2D correlated charge density wave of 1T-TaS210.1038/s41535-021-00330-92397-4648https://doaj.org/article/d053fff7556d4e4ba517af8f947377cd2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41535-021-00330-9https://doaj.org/toc/2397-4648Abstract Domain walls in correlated charge density wave compounds such as 1T-TaS2 can have distinct localized states which govern physical properties and functionalities of emerging quantum phases. However, detailed atomic and electronic structures of domain walls have largely been elusive. We identify using scanning tunneling microscope and density functional theory calculations the atomic and electronic structures for a plethora of discommensuration domain walls in 1T-TaS2 quenched metastably with nanoscale domain wall networks. The domain walls exhibit various in-gap states within the Mott gap but metallic states appear in only particular types of domain walls. A systematic understanding of the domain-wall electronic property requests not only the electron counting but also including various intertwined interactions such as structural relaxation, electron correlation, and charge transfer. This work guides the domain wall engineering of the functionality in correlated van der Waals materials.Jae Whan ParkJinwon LeeHan Woong YeomNature 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 Jae Whan Park Jinwon Lee Han Woong Yeom Zoology of domain walls in quasi-2D correlated charge density wave of 1T-TaS2
description	Abstract Domain walls in correlated charge density wave compounds such as 1T-TaS2 can have distinct localized states which govern physical properties and functionalities of emerging quantum phases. However, detailed atomic and electronic structures of domain walls have largely been elusive. We identify using scanning tunneling microscope and density functional theory calculations the atomic and electronic structures for a plethora of discommensuration domain walls in 1T-TaS2 quenched metastably with nanoscale domain wall networks. The domain walls exhibit various in-gap states within the Mott gap but metallic states appear in only particular types of domain walls. A systematic understanding of the domain-wall electronic property requests not only the electron counting but also including various intertwined interactions such as structural relaxation, electron correlation, and charge transfer. This work guides the domain wall engineering of the functionality in correlated van der Waals materials.
format	article
author	Jae Whan Park Jinwon Lee Han Woong Yeom
author_facet	Jae Whan Park Jinwon Lee Han Woong Yeom
author_sort	Jae Whan Park
title	Zoology of domain walls in quasi-2D correlated charge density wave of 1T-TaS2
title_short	Zoology of domain walls in quasi-2D correlated charge density wave of 1T-TaS2
title_full	Zoology of domain walls in quasi-2D correlated charge density wave of 1T-TaS2
title_fullStr	Zoology of domain walls in quasi-2D correlated charge density wave of 1T-TaS2
title_full_unstemmed	Zoology of domain walls in quasi-2D correlated charge density wave of 1T-TaS2
title_sort	zoology of domain walls in quasi-2d correlated charge density wave of 1t-tas2
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d053fff7556d4e4ba517af8f947377cd
work_keys_str_mv	AT jaewhanpark zoologyofdomainwallsinquasi2dcorrelatedchargedensitywaveof1ttas2 AT jinwonlee zoologyofdomainwallsinquasi2dcorrelatedchargedensitywaveof1ttas2 AT hanwoongyeom zoologyofdomainwallsinquasi2dcorrelatedchargedensitywaveof1ttas2
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Zoology of domain walls in quasi-2D correlated charge density wave of 1T-TaS2

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