Engineering of many-body Majorana states in a topological insulator/s-wave superconductor heterostructure

Abstract We study a vortex chain in a thin film of a topological insulator with proximity-induced superconductivity—a promising platform to realize Majorana zero modes (MZMs)—by modeling it as a two-leg Majorana ladder. While each pair of MZMs hybridizes through vortex tunneling, we hereby show that...

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Autores principales:	Hsiang-Hsuan Hung, Jiansheng Wu, Kuei Sun, Ching-Kai Chiu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6d7d26e2c2c84a67864de0ba8a77b76f
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spelling	oai:doaj.org-article:6d7d26e2c2c84a67864de0ba8a77b76f2021-12-02T16:07:46ZEngineering of many-body Majorana states in a topological insulator/s-wave superconductor heterostructure10.1038/s41598-017-02493-72045-2322https://doaj.org/article/6d7d26e2c2c84a67864de0ba8a77b76f2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02493-7https://doaj.org/toc/2045-2322Abstract We study a vortex chain in a thin film of a topological insulator with proximity-induced superconductivity—a promising platform to realize Majorana zero modes (MZMs)—by modeling it as a two-leg Majorana ladder. While each pair of MZMs hybridizes through vortex tunneling, we hereby show that MZMs can be stabilized on the ends of the ladder with the presence of tilted external magnetic field and four-Majorana interaction. Furthermore, a fruitful phase diagram is obtained by controlling the direction of magnetic field and the thickness of the sample. We reveal many-body Majorana states and interaction-induced topological phase transitions and also identify trivial-superconducting and commensurate/incommensurate charge-density-wave states in the phase diagram.Hsiang-Hsuan HungJiansheng WuKuei SunChing-Kai ChiuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hsiang-Hsuan Hung Jiansheng Wu Kuei Sun Ching-Kai Chiu Engineering of many-body Majorana states in a topological insulator/s-wave superconductor heterostructure
description	Abstract We study a vortex chain in a thin film of a topological insulator with proximity-induced superconductivity—a promising platform to realize Majorana zero modes (MZMs)—by modeling it as a two-leg Majorana ladder. While each pair of MZMs hybridizes through vortex tunneling, we hereby show that MZMs can be stabilized on the ends of the ladder with the presence of tilted external magnetic field and four-Majorana interaction. Furthermore, a fruitful phase diagram is obtained by controlling the direction of magnetic field and the thickness of the sample. We reveal many-body Majorana states and interaction-induced topological phase transitions and also identify trivial-superconducting and commensurate/incommensurate charge-density-wave states in the phase diagram.
format	article
author	Hsiang-Hsuan Hung Jiansheng Wu Kuei Sun Ching-Kai Chiu
author_facet	Hsiang-Hsuan Hung Jiansheng Wu Kuei Sun Ching-Kai Chiu
author_sort	Hsiang-Hsuan Hung
title	Engineering of many-body Majorana states in a topological insulator/s-wave superconductor heterostructure
title_short	Engineering of many-body Majorana states in a topological insulator/s-wave superconductor heterostructure
title_full	Engineering of many-body Majorana states in a topological insulator/s-wave superconductor heterostructure
title_fullStr	Engineering of many-body Majorana states in a topological insulator/s-wave superconductor heterostructure
title_full_unstemmed	Engineering of many-body Majorana states in a topological insulator/s-wave superconductor heterostructure
title_sort	engineering of many-body majorana states in a topological insulator/s-wave superconductor heterostructure
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/6d7d26e2c2c84a67864de0ba8a77b76f
work_keys_str_mv	AT hsianghsuanhung engineeringofmanybodymajoranastatesinatopologicalinsulatorswavesuperconductorheterostructure AT jianshengwu engineeringofmanybodymajoranastatesinatopologicalinsulatorswavesuperconductorheterostructure AT kueisun engineeringofmanybodymajoranastatesinatopologicalinsulatorswavesuperconductorheterostructure AT chingkaichiu engineeringofmanybodymajoranastatesinatopologicalinsulatorswavesuperconductorheterostructure
_version_	1718384721814093824

Engineering of many-body Majorana states in a topological insulator/s-wave superconductor heterostructure

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