Trivial and Topological Bound States in Bilayer Graphene Quantum Dots and Rings

This article also appears in: 60 years of pss Hot Topic: Magnetic Materials.

Detalhes bibliográficos
Autores: Benchtaber, Nassima, Sánchez, David, Serra, Llorenç
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/271475
Acesso em linha:http://hdl.handle.net/10261/271475
Access Level:acceso abierto
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spelling Trivial and Topological Bound States in Bilayer Graphene Quantum Dots and RingsBenchtaber, NassimaSánchez, DavidSerra, LlorençThis article also appears in: 60 years of pss Hot Topic: Magnetic Materials.Herein, two different types of confinement in bilayer graphene by top and bottom gating with symmetrical microelectrodes are discussed and compared. Trivial confinement corresponds to the same polarity of all top gates, which is opposed to that of all bottom ones. Topological confinement requires the polarity of part of the top–bottom pairs of gates to be reversed. It is shown that the main qualitative difference between trivial and topological bound states manifests itself in the magnetic field dependence. The finding is illustrated with an explicit calculation of the energy spectrum for quantum dots and rings. Trivial confinement shows bunching of levels into degenerate Landau bands, with a non-centered gap, while topological confinement shows no field-induced gap and a sequence of state branches always crossing zero energy.The authors acknowledge support from AEI (Spain) Grant no. PID2020-117347GB-I00, MINECO/AEI/FEDER María de Maeztu Program for Units of Excellence MDM2017-0711, and GOIB Grant no. PDR2020-12.Peer reviewedJohn Wiley & SonsAgencia Estatal de Investigación (España)Ministerio de Economía y Competitividad (España)European CommissionGovern de les Illes BalearsConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202220222022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/271475reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-117347GB-I00info:eu-repo/grantAgreement/MICINN//MDM-2017-0711The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1002/pssb.202200023Benchtaber, Nassima; Sánchez, David; Serra, Llorenç; 2022; Trivial and topological bound states in bilayer graphene quantum dots and rings [preprint]; arXiv; https://doi.org/10.48550/arXiv.2204.07737https://doi.org/10.1002/pssb.202200023Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2714752026-05-22T06:33:51Z
dc.title.none.fl_str_mv Trivial and Topological Bound States in Bilayer Graphene Quantum Dots and Rings
title Trivial and Topological Bound States in Bilayer Graphene Quantum Dots and Rings
spellingShingle Trivial and Topological Bound States in Bilayer Graphene Quantum Dots and Rings
Benchtaber, Nassima
title_short Trivial and Topological Bound States in Bilayer Graphene Quantum Dots and Rings
title_full Trivial and Topological Bound States in Bilayer Graphene Quantum Dots and Rings
title_fullStr Trivial and Topological Bound States in Bilayer Graphene Quantum Dots and Rings
title_full_unstemmed Trivial and Topological Bound States in Bilayer Graphene Quantum Dots and Rings
title_sort Trivial and Topological Bound States in Bilayer Graphene Quantum Dots and Rings
dc.creator.none.fl_str_mv Benchtaber, Nassima
Sánchez, David
Serra, Llorenç
author Benchtaber, Nassima
author_facet Benchtaber, Nassima
Sánchez, David
Serra, Llorenç
author_role author
author2 Sánchez, David
Serra, Llorenç
author2_role author
author
dc.contributor.none.fl_str_mv Agencia Estatal de Investigación (España)
Ministerio de Economía y Competitividad (España)
European Commission
Govern de les Illes Balears
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description This article also appears in: 60 years of pss Hot Topic: Magnetic Materials.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/271475
url http://hdl.handle.net/10261/271475
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-117347GB-I00
info:eu-repo/grantAgreement/MICINN//MDM-2017-0711
The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1002/pssb.202200023
Benchtaber, Nassima; Sánchez, David; Serra, Llorenç; 2022; Trivial and topological bound states in bilayer graphene quantum dots and rings [preprint]; arXiv; https://doi.org/10.48550/arXiv.2204.07737
https://doi.org/10.1002/pssb.202200023
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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repository.mail.fl_str_mv
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