Valley-polarized quantum transport generated by gauge fields in graphene

We report on the possibility to simultaneously generate in graphene a bulk valley-polarized dissipative transport and a quantum valley Hall effect by combining strain-induced gauge fields and real magnetic fields. Such unique phenomenon results from a 'resonance/anti-resonance' effect driv...

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Autores: Settnes, Mikkel, Garcia, José H.|||0000-0002-5752-4759, Roche, Stephan|||0000-0003-0323-4665
Formato: artículo
Fecha de publicación:2017
País:España
Recursos:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:200984
Acesso em linha:https://ddd.uab.cat/record/200984
https://dx.doi.org/urn:doi:10.1088/2053-1583/aa7cbd
Access Level:acceso abierto
Palavra-chave:Graphene
Quantum transport
Strain deformations
Theory
Valley Hall effect
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spelling Valley-polarized quantum transport generated by gauge fields in grapheneSettnes, MikkelGarcia, José H.|||0000-0002-5752-4759Roche, Stephan|||0000-0003-0323-4665GrapheneQuantum transportStrain deformationsTheoryValley Hall effectWe report on the possibility to simultaneously generate in graphene a bulk valley-polarized dissipative transport and a quantum valley Hall effect by combining strain-induced gauge fields and real magnetic fields. Such unique phenomenon results from a 'resonance/anti-resonance' effect driven by the superposition/cancellation of superimposed gauge fields which differently affect time reversal symmetry. The onset of a valley-polarized Hall current concomitant to a dissipative valley-polarized current flow in the opposite valley is revealed by a e²/h Hall conductivity plateau. We employ efficient linear scaling Kubo transport methods combined with a valley projection scheme to access valley-dependent conductivities and show that the results are robust against disorder. 22017-01-0120172017-01-01Articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/200984https://dx.doi.org/urn:doi:10.1088/2053-1583/aa7cbdreponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengEuropean Commission https://doi.org/10.13039/501100000780 696656Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 FIS2015-67767-PMinisterio 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:2009842026-06-06T12:50:31Z
dc.title.none.fl_str_mv Valley-polarized quantum transport generated by gauge fields in graphene
title Valley-polarized quantum transport generated by gauge fields in graphene
spellingShingle Valley-polarized quantum transport generated by gauge fields in graphene
Settnes, Mikkel
Graphene
Quantum transport
Strain deformations
Theory
Valley Hall effect
title_short Valley-polarized quantum transport generated by gauge fields in graphene
title_full Valley-polarized quantum transport generated by gauge fields in graphene
title_fullStr Valley-polarized quantum transport generated by gauge fields in graphene
title_full_unstemmed Valley-polarized quantum transport generated by gauge fields in graphene
title_sort Valley-polarized quantum transport generated by gauge fields in graphene
dc.creator.none.fl_str_mv Settnes, Mikkel
Garcia, José H.|||0000-0002-5752-4759
Roche, Stephan|||0000-0003-0323-4665
author Settnes, Mikkel
author_facet Settnes, Mikkel
Garcia, José H.|||0000-0002-5752-4759
Roche, Stephan|||0000-0003-0323-4665
author_role author
author2 Garcia, José H.|||0000-0002-5752-4759
Roche, Stephan|||0000-0003-0323-4665
author2_role author
author
dc.subject.none.fl_str_mv Graphene
Quantum transport
Strain deformations
Theory
Valley Hall effect
topic Graphene
Quantum transport
Strain deformations
Theory
Valley Hall effect
description We report on the possibility to simultaneously generate in graphene a bulk valley-polarized dissipative transport and a quantum valley Hall effect by combining strain-induced gauge fields and real magnetic fields. Such unique phenomenon results from a 'resonance/anti-resonance' effect driven by the superposition/cancellation of superimposed gauge fields which differently affect time reversal symmetry. The onset of a valley-polarized Hall current concomitant to a dissipative valley-polarized current flow in the opposite valley is revealed by a e²/h Hall conductivity plateau. We employ efficient linear scaling Kubo transport methods combined with a valley projection scheme to access valley-dependent conductivities and show that the results are robust against disorder.
publishDate 2017
dc.date.none.fl_str_mv 2
2017-01-01
2017
2017-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/200984
https://dx.doi.org/urn:doi:10.1088/2053-1583/aa7cbd
url https://ddd.uab.cat/record/200984
https://dx.doi.org/urn:doi:10.1088/2053-1583/aa7cbd
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission https://doi.org/10.13039/501100000780 696656
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 FIS2015-67767-P
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
https://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
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
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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