Charge and spin transport anisotropy in nanopatterned graphene

Anisotropic electronic transport is a possible route towards nanoscale circuitry design, particularly in two-dimensional materials. Proposals to introduce such a feature in patterned graphene have to date relied on large-scale structural inhomogeneities. Here we theoretically explore how a random, y...

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Autores: Gregersen, Søren Schou, Garcia, José H.|||0000-0002-5752-4759, Jauho, Antti-Pekka, Roche, Stephan|||0000-0003-0323-4665, Power, Stephen|||0000-0003-4566-628X
Formato: artículo
Fecha de publicación:2018
País:España
Recursos:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:225051
Acesso em linha:https://ddd.uab.cat/record/225051
https://dx.doi.org/urn:doi:10.1088/2515-7639/aadca3
Access Level:acceso abierto
Palavra-chave:Graphene
Zigzag edge magnetism
Antidots
Perforations
Spin splitting
Anisotropic transport
Spintronics
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spelling Charge and spin transport anisotropy in nanopatterned grapheneGregersen, Søren SchouGarcia, José H.|||0000-0002-5752-4759Jauho, Antti-PekkaRoche, Stephan|||0000-0003-0323-4665Power, Stephen|||0000-0003-4566-628XGrapheneZigzag edge magnetismAntidotsPerforationsSpin splittingAnisotropic transportSpintronicsAnisotropic electronic transport is a possible route towards nanoscale circuitry design, particularly in two-dimensional materials. Proposals to introduce such a feature in patterned graphene have to date relied on large-scale structural inhomogeneities. Here we theoretically explore how a random, yet homogeneous, distribution of zigzag-edged triangular perforations can generate spatial anisotropies in both charge and spin transport. Anisotropic electronic transport is found to persist under considerable disordering of the perforation edges, suggesting its viability under realistic experimental conditions. Furthermore, controlling the relative orientation of perforations enables spin filtering of the transmitted electrons, resulting in a half-metallic anisotropic transport regime. Our findings point towards a co-integration of charge and spin control in a two-dimensional platform of relevance for nanocircuit design. We further highlight how geometrical effects allow finite samples to display finite transverse resistances, reminiscent of Spin Hall effects, in the absence of any bulk fingerprints of such mechanisms, and explore the underlying symmetries behind this behaviour. 22018-01-0120182018-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/225051https://dx.doi.org/urn:doi:10.1088/2515-7639/aadca3reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengEuropean Commission https://doi.org/10.13039/501100000780 665919Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 FIS2015-67767-PMinisterio de Economía y Competitividad https://doi.org/10.13039/501100003329 FIS2015-64886-C5-3-PEuropean Commission https://doi.org/10.13039/501100000780 785219Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 SEV-2013-0295open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2250512026-06-06T12:50:31Z
dc.title.none.fl_str_mv Charge and spin transport anisotropy in nanopatterned graphene
title Charge and spin transport anisotropy in nanopatterned graphene
spellingShingle Charge and spin transport anisotropy in nanopatterned graphene
Gregersen, Søren Schou
Graphene
Zigzag edge magnetism
Antidots
Perforations
Spin splitting
Anisotropic transport
Spintronics
title_short Charge and spin transport anisotropy in nanopatterned graphene
title_full Charge and spin transport anisotropy in nanopatterned graphene
title_fullStr Charge and spin transport anisotropy in nanopatterned graphene
title_full_unstemmed Charge and spin transport anisotropy in nanopatterned graphene
title_sort Charge and spin transport anisotropy in nanopatterned graphene
dc.creator.none.fl_str_mv Gregersen, Søren Schou
Garcia, José H.|||0000-0002-5752-4759
Jauho, Antti-Pekka
Roche, Stephan|||0000-0003-0323-4665
Power, Stephen|||0000-0003-4566-628X
author Gregersen, Søren Schou
author_facet Gregersen, Søren Schou
Garcia, José H.|||0000-0002-5752-4759
Jauho, Antti-Pekka
Roche, Stephan|||0000-0003-0323-4665
Power, Stephen|||0000-0003-4566-628X
author_role author
author2 Garcia, José H.|||0000-0002-5752-4759
Jauho, Antti-Pekka
Roche, Stephan|||0000-0003-0323-4665
Power, Stephen|||0000-0003-4566-628X
author2_role author
author
author
author
dc.subject.none.fl_str_mv Graphene
Zigzag edge magnetism
Antidots
Perforations
Spin splitting
Anisotropic transport
Spintronics
topic Graphene
Zigzag edge magnetism
Antidots
Perforations
Spin splitting
Anisotropic transport
Spintronics
description Anisotropic electronic transport is a possible route towards nanoscale circuitry design, particularly in two-dimensional materials. Proposals to introduce such a feature in patterned graphene have to date relied on large-scale structural inhomogeneities. Here we theoretically explore how a random, yet homogeneous, distribution of zigzag-edged triangular perforations can generate spatial anisotropies in both charge and spin transport. Anisotropic electronic transport is found to persist under considerable disordering of the perforation edges, suggesting its viability under realistic experimental conditions. Furthermore, controlling the relative orientation of perforations enables spin filtering of the transmitted electrons, resulting in a half-metallic anisotropic transport regime. Our findings point towards a co-integration of charge and spin control in a two-dimensional platform of relevance for nanocircuit design. We further highlight how geometrical effects allow finite samples to display finite transverse resistances, reminiscent of Spin Hall effects, in the absence of any bulk fingerprints of such mechanisms, and explore the underlying symmetries behind this behaviour.
publishDate 2018
dc.date.none.fl_str_mv 2
2018-01-01
2018
2018-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/225051
https://dx.doi.org/urn:doi:10.1088/2515-7639/aadca3
url https://ddd.uab.cat/record/225051
https://dx.doi.org/urn:doi:10.1088/2515-7639/aadca3
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 665919
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 FIS2015-64886-C5-3-P
European Commission https://doi.org/10.13039/501100000780 785219
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://creativecommons.org/licenses/by/4.0/
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://creativecommons.org/licenses/by/4.0/
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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score 15.301603

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