Anomalous ballistic transport in disordered bilayer graphene

We report anomalous quantum transport features in bilayer graphene in the presence of a random distribution of structural vacancies. By using an efficient real-space Kubo-Greenwood transport methodology, the impact of a varying density of dimer versus nondimer vacancies is investigated in very large...

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Autores: Dinh, Van Tuan|||0000-0002-9605-2686, Roche, Stephan|||0000-0003-0323-4665
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:195667
Acceso en línea:https://ddd.uab.cat/record/195667
https://dx.doi.org/urn:doi:10.1103/PhysRevB.93.041403
Access Level:acceso abierto
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spelling Anomalous ballistic transport in disordered bilayer grapheneA Dirac semimetal induced by dimer vacanciesDinh, Van Tuan|||0000-0002-9605-2686Roche, Stephan|||0000-0003-0323-4665We report anomalous quantum transport features in bilayer graphene in the presence of a random distribution of structural vacancies. By using an efficient real-space Kubo-Greenwood transport methodology, the impact of a varying density of dimer versus nondimer vacancies is investigated in very large scale disordered models. While nondimer vacancies are shown to induce localization regimes, dimer vacancies result in an unexpected ballistic regime whose energy window surprisingly enlarges with increasing impurity density. Such counterintuitive phenomenon is explained by the formation of an effective linear dispersion in the bilayer band structure, which roots in the symmetry breaking effects driven by dimer vacancies, and provides a realization of Dirac semimetals in high dimension. 22016-01-0120162016-01-01Articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/195667https://dx.doi.org/urn:doi:10.1103/PhysRevB.93.041403reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengMinisterio de Economía y Competitividad https://doi.org/10.13039/501100003329 MAT2012-33911Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 SEV-2013-0295open accesshttp://purl.org/coar/access_right/c_abf2Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.https://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:1956672026-06-06T12:50:31Z
dc.title.none.fl_str_mv Anomalous ballistic transport in disordered bilayer graphene
A Dirac semimetal induced by dimer vacancies
title Anomalous ballistic transport in disordered bilayer graphene
spellingShingle Anomalous ballistic transport in disordered bilayer graphene
Dinh, Van Tuan|||0000-0002-9605-2686
title_short Anomalous ballistic transport in disordered bilayer graphene
title_full Anomalous ballistic transport in disordered bilayer graphene
title_fullStr Anomalous ballistic transport in disordered bilayer graphene
title_full_unstemmed Anomalous ballistic transport in disordered bilayer graphene
title_sort Anomalous ballistic transport in disordered bilayer graphene
dc.creator.none.fl_str_mv Dinh, Van Tuan|||0000-0002-9605-2686
Roche, Stephan|||0000-0003-0323-4665
author Dinh, Van Tuan|||0000-0002-9605-2686
author_facet Dinh, Van Tuan|||0000-0002-9605-2686
Roche, Stephan|||0000-0003-0323-4665
author_role author
author2 Roche, Stephan|||0000-0003-0323-4665
author2_role author
description We report anomalous quantum transport features in bilayer graphene in the presence of a random distribution of structural vacancies. By using an efficient real-space Kubo-Greenwood transport methodology, the impact of a varying density of dimer versus nondimer vacancies is investigated in very large scale disordered models. While nondimer vacancies are shown to induce localization regimes, dimer vacancies result in an unexpected ballistic regime whose energy window surprisingly enlarges with increasing impurity density. Such counterintuitive phenomenon is explained by the formation of an effective linear dispersion in the bilayer band structure, which roots in the symmetry breaking effects driven by dimer vacancies, and provides a realization of Dirac semimetals in high dimension.
publishDate 2016
dc.date.none.fl_str_mv 2
2016-01-01
2016
2016-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
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dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/195667
https://dx.doi.org/urn:doi:10.1103/PhysRevB.93.041403
url https://ddd.uab.cat/record/195667
https://dx.doi.org/urn:doi:10.1103/PhysRevB.93.041403
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 MAT2012-33911
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 SEV-2013-0295
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
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dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
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eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
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