Radiation effects on the electronic structure of bilayer graphene

Autores
Suárez Morell, Eric; Foa Torres, Luis Eduardo Francisco
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report on the effects of laser illumination on the electronic properties of bilayer graphene. By using Floquet theory combined with Green's functions, we unveil the appearance of laser-induced gaps not only at integer multiples of ℏΩ/2 but also at the Dirac point with features which are shown to depend strongly on the laser polarization. Trigonal warping corrections are shown to lead to important corrections for radiation in the terahertz range, reducing the size of the dynamical gaps. Furthermore, our analysis of the topological properties at low energies reveals that, when irradiated with linearly polarized light, ideal bilayer graphene behaves as a trivial insulator, whereas circular polarization leads to a nontrivial insulator per valley.
Fil: Suárez Morell, Eric. Universidad Técnica Federico Santa María; Chile
Fil: Foa Torres, Luis Eduardo Francisco. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Materia
Graphene
Topological insulator
Laser
Bandgap
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/199170
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/199170
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Radiation effects on the electronic structure of bilayer grapheneSuárez Morell, EricFoa Torres, Luis Eduardo FranciscoGrapheneTopological insulatorLaserBandgaphttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We report on the effects of laser illumination on the electronic properties of bilayer graphene. By using Floquet theory combined with Green's functions, we unveil the appearance of laser-induced gaps not only at integer multiples of ℏΩ/2 but also at the Dirac point with features which are shown to depend strongly on the laser polarization. Trigonal warping corrections are shown to lead to important corrections for radiation in the terahertz range, reducing the size of the dynamical gaps. Furthermore, our analysis of the topological properties at low energies reveals that, when irradiated with linearly polarized light, ideal bilayer graphene behaves as a trivial insulator, whereas circular polarization leads to a nontrivial insulator per valley.Fil: Suárez Morell, Eric. Universidad Técnica Federico Santa María; ChileFil: Foa Torres, Luis Eduardo Francisco. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaAmerican Physical Society2012-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/199170Suárez Morell, Eric; Foa Torres, Luis Eduardo Francisco; Radiation effects on the electronic structure of bilayer graphene; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 86; 12; 9-2012; 125449-1254491098-01211550-235XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://link.aps.org/doi/10.1103/PhysRevB.86.125449info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.86.125449info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:59:23Zoai:ri.conicet.gov.ar:11336/199170instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:59:25.002CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Radiation effects on the electronic structure of bilayer graphene
title Radiation effects on the electronic structure of bilayer graphene
spellingShingle Radiation effects on the electronic structure of bilayer graphene
Suárez Morell, Eric
Graphene
Topological insulator
Laser
Bandgap
title_short Radiation effects on the electronic structure of bilayer graphene
title_full Radiation effects on the electronic structure of bilayer graphene
title_fullStr Radiation effects on the electronic structure of bilayer graphene
title_full_unstemmed Radiation effects on the electronic structure of bilayer graphene
title_sort Radiation effects on the electronic structure of bilayer graphene
dc.creator.none.fl_str_mv Suárez Morell, Eric
Foa Torres, Luis Eduardo Francisco
author Suárez Morell, Eric
author_facet Suárez Morell, Eric
Foa Torres, Luis Eduardo Francisco
author_role author
author2 Foa Torres, Luis Eduardo Francisco
author2_role author
dc.subject.none.fl_str_mv Graphene
Topological insulator
Laser
Bandgap
topic Graphene
Topological insulator
Laser
Bandgap
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We report on the effects of laser illumination on the electronic properties of bilayer graphene. By using Floquet theory combined with Green's functions, we unveil the appearance of laser-induced gaps not only at integer multiples of ℏΩ/2 but also at the Dirac point with features which are shown to depend strongly on the laser polarization. Trigonal warping corrections are shown to lead to important corrections for radiation in the terahertz range, reducing the size of the dynamical gaps. Furthermore, our analysis of the topological properties at low energies reveals that, when irradiated with linearly polarized light, ideal bilayer graphene behaves as a trivial insulator, whereas circular polarization leads to a nontrivial insulator per valley.
Fil: Suárez Morell, Eric. Universidad Técnica Federico Santa María; Chile
Fil: Foa Torres, Luis Eduardo Francisco. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
description We report on the effects of laser illumination on the electronic properties of bilayer graphene. By using Floquet theory combined with Green's functions, we unveil the appearance of laser-induced gaps not only at integer multiples of ℏΩ/2 but also at the Dirac point with features which are shown to depend strongly on the laser polarization. Trigonal warping corrections are shown to lead to important corrections for radiation in the terahertz range, reducing the size of the dynamical gaps. Furthermore, our analysis of the topological properties at low energies reveals that, when irradiated with linearly polarized light, ideal bilayer graphene behaves as a trivial insulator, whereas circular polarization leads to a nontrivial insulator per valley.
publishDate 2012
dc.date.none.fl_str_mv 2012-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/199170
Suárez Morell, Eric; Foa Torres, Luis Eduardo Francisco; Radiation effects on the electronic structure of bilayer graphene; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 86; 12; 9-2012; 125449-125449
1098-0121
1550-235X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/199170
identifier_str_mv Suárez Morell, Eric; Foa Torres, Luis Eduardo Francisco; Radiation effects on the electronic structure of bilayer graphene; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 86; 12; 9-2012; 125449-125449
1098-0121
1550-235X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://link.aps.org/doi/10.1103/PhysRevB.86.125449
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.86.125449
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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