CaTe: a new topological node-line and Dirac semimetal

Topological physics: a predicted node-line semimetal CaTe Topological insulators are materials with non-trivial topological order that are insulating in their bulk but conductive on their surface. Recent findings extend the topological states to three-dimensional semimetals that host exotic physical...

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Autores principales:	Yongping Du, Feng Tang, Di Wang, Li Sheng, Er-jun Kan, Chun-Gang Duan, Sergey Y. Savrasov, Xiangang Wan
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/488103b9d5ca4c83b37f8243a61af03d
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spelling	oai:doaj.org-article:488103b9d5ca4c83b37f8243a61af03d2021-12-02T16:05:44ZCaTe: a new topological node-line and Dirac semimetal10.1038/s41535-016-0005-42397-4648https://doaj.org/article/488103b9d5ca4c83b37f8243a61af03d2017-01-01T00:00:00Zhttps://doi.org/10.1038/s41535-016-0005-4https://doaj.org/toc/2397-4648Topological physics: a predicted node-line semimetal CaTe Topological insulators are materials with non-trivial topological order that are insulating in their bulk but conductive on their surface. Recent findings extend the topological states to three-dimensional semimetals that host exotic physical phenomena such as Weyl fermion quantum transport and Hall effects. Among the three types of topological semimetals, three-dimensional Dirac semimetals evolve to Weyl analogs upon breaking of time reversal or inversion symmetry. Here, the theoretical work by a team led by Professor Xiangang Wan from Nanjing University in China proposes a new phase that falls into the third category: node-line semimetals. Based on first-principles calculations and effective model analysis, CsCl structured CaTe is predicted to be a node-line semimetals with characteristic drumhead-like surface states if spin-orbit coupling is absent. When spin-orbit coupling is included, CaTe becomes a three-dimensional Dirac semimetal.Yongping DuFeng TangDi WangLi ShengEr-jun KanChun-Gang DuanSergey Y. SavrasovXiangang WanNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 2, Iss 1, Pp 1-4 (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 Yongping Du Feng Tang Di Wang Li Sheng Er-jun Kan Chun-Gang Duan Sergey Y. Savrasov Xiangang Wan CaTe: a new topological node-line and Dirac semimetal
description	Topological physics: a predicted node-line semimetal CaTe Topological insulators are materials with non-trivial topological order that are insulating in their bulk but conductive on their surface. Recent findings extend the topological states to three-dimensional semimetals that host exotic physical phenomena such as Weyl fermion quantum transport and Hall effects. Among the three types of topological semimetals, three-dimensional Dirac semimetals evolve to Weyl analogs upon breaking of time reversal or inversion symmetry. Here, the theoretical work by a team led by Professor Xiangang Wan from Nanjing University in China proposes a new phase that falls into the third category: node-line semimetals. Based on first-principles calculations and effective model analysis, CsCl structured CaTe is predicted to be a node-line semimetals with characteristic drumhead-like surface states if spin-orbit coupling is absent. When spin-orbit coupling is included, CaTe becomes a three-dimensional Dirac semimetal.
format	article
author	Yongping Du Feng Tang Di Wang Li Sheng Er-jun Kan Chun-Gang Duan Sergey Y. Savrasov Xiangang Wan
author_facet	Yongping Du Feng Tang Di Wang Li Sheng Er-jun Kan Chun-Gang Duan Sergey Y. Savrasov Xiangang Wan
author_sort	Yongping Du
title	CaTe: a new topological node-line and Dirac semimetal
title_short	CaTe: a new topological node-line and Dirac semimetal
title_full	CaTe: a new topological node-line and Dirac semimetal
title_fullStr	CaTe: a new topological node-line and Dirac semimetal
title_full_unstemmed	CaTe: a new topological node-line and Dirac semimetal
title_sort	cate: a new topological node-line and dirac semimetal
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/488103b9d5ca4c83b37f8243a61af03d
work_keys_str_mv	AT yongpingdu cateanewtopologicalnodelineanddiracsemimetal AT fengtang cateanewtopologicalnodelineanddiracsemimetal AT diwang cateanewtopologicalnodelineanddiracsemimetal AT lisheng cateanewtopologicalnodelineanddiracsemimetal AT erjunkan cateanewtopologicalnodelineanddiracsemimetal AT chungangduan cateanewtopologicalnodelineanddiracsemimetal AT sergeyysavrasov cateanewtopologicalnodelineanddiracsemimetal AT xiangangwan cateanewtopologicalnodelineanddiracsemimetal
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CaTe: a new topological node-line and Dirac semimetal

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