Topological phase transition between a normal insulator and a topological metal state in a quasi-one-dimensional system

Abstract We theoretically report the finding of a new kind of topological phase transition between a normal insulator and a topological metal state where the closing-reopening of bandgap is accompanied by passing the Fermi level through an additional band. The resulting nontrivial topological metal...

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Autores principales:	Milad Jangjan, Mir Vahid Hosseini
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/db392fe52cf0464aa7556d49ca35ad51
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spelling	oai:doaj.org-article:db392fe52cf0464aa7556d49ca35ad512021-12-02T16:07:02ZTopological phase transition between a normal insulator and a topological metal state in a quasi-one-dimensional system10.1038/s41598-021-92390-x2045-2322https://doaj.org/article/db392fe52cf0464aa7556d49ca35ad512021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92390-xhttps://doaj.org/toc/2045-2322Abstract We theoretically report the finding of a new kind of topological phase transition between a normal insulator and a topological metal state where the closing-reopening of bandgap is accompanied by passing the Fermi level through an additional band. The resulting nontrivial topological metal phase is characterized by stable zero-energy localized edge states that exist within the full gapless bulk states. Such states living on a quasi-one-dimensional system with three sublattices per unit cell are protected by hidden inversion symmetry. While other required symmetries such as chiral, particle-hole, or full inversion symmetry are absent in the system.Milad JangjanMir Vahid HosseiniNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Milad Jangjan Mir Vahid Hosseini Topological phase transition between a normal insulator and a topological metal state in a quasi-one-dimensional system
description	Abstract We theoretically report the finding of a new kind of topological phase transition between a normal insulator and a topological metal state where the closing-reopening of bandgap is accompanied by passing the Fermi level through an additional band. The resulting nontrivial topological metal phase is characterized by stable zero-energy localized edge states that exist within the full gapless bulk states. Such states living on a quasi-one-dimensional system with three sublattices per unit cell are protected by hidden inversion symmetry. While other required symmetries such as chiral, particle-hole, or full inversion symmetry are absent in the system.
format	article
author	Milad Jangjan Mir Vahid Hosseini
author_facet	Milad Jangjan Mir Vahid Hosseini
author_sort	Milad Jangjan
title	Topological phase transition between a normal insulator and a topological metal state in a quasi-one-dimensional system
title_short	Topological phase transition between a normal insulator and a topological metal state in a quasi-one-dimensional system
title_full	Topological phase transition between a normal insulator and a topological metal state in a quasi-one-dimensional system
title_fullStr	Topological phase transition between a normal insulator and a topological metal state in a quasi-one-dimensional system
title_full_unstemmed	Topological phase transition between a normal insulator and a topological metal state in a quasi-one-dimensional system
title_sort	topological phase transition between a normal insulator and a topological metal state in a quasi-one-dimensional system
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/db392fe52cf0464aa7556d49ca35ad51
work_keys_str_mv	AT miladjangjan topologicalphasetransitionbetweenanormalinsulatorandatopologicalmetalstateinaquasionedimensionalsystem AT mirvahidhosseini topologicalphasetransitionbetweenanormalinsulatorandatopologicalmetalstateinaquasionedimensionalsystem
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Topological phase transition between a normal insulator and a topological metal state in a quasi-one-dimensional system

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