Optical conductivity in an effective model for graphene: finite temperature corrections (015401)

Autores
Falomir, Horacio Alberto; Muñoz, Enrique; Loewe, Marcelo; Zamora, Renato
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this article, we investigate the temperature and chemical potential dependence of the optical conductivity of graphene, within a field theoretical representation in the continuum approximation, arising from an underlying tight-binding atomistic model, that includes up to second-nearest neighbors coupling. Our calculations allow us to obtain the dependence of the optical conductivity on frequency, temperature and finite chemical potential, thus generalizing our previously reported calculations at zero temperature, and reproducing the universal and experimentally verified value at zero frequency. Moreover, we also show that a small but still measurable shift in the conductance minimum arises as a function of the second-nearest neighbors hopping t´, thus providing the possibility to directly measure this parameter in transport experiments.
Fil: Falomir, Horacio Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Muñoz, Enrique. Facultad de Física, Pont. Univ. Católica de Chile; Chile
Fil: Loewe, Marcelo. Facultad de Física, Pont. Univ. Católica de Chile; Chile
Fil: Zamora, Renato. Universidad Diego Portales; Chile
Materia
graphene
optical conductivity
finite temperature
chemical potential
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:11336/127436
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Optical conductivity in an effective model for graphene: finite temperature corrections (015401)Falomir, Horacio AlbertoMuñoz, EnriqueLoewe, MarceloZamora, Renatographeneoptical conductivityfinite temperaturechemical potentialhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1In this article, we investigate the temperature and chemical potential dependence of the optical conductivity of graphene, within a field theoretical representation in the continuum approximation, arising from an underlying tight-binding atomistic model, that includes up to second-nearest neighbors coupling. Our calculations allow us to obtain the dependence of the optical conductivity on frequency, temperature and finite chemical potential, thus generalizing our previously reported calculations at zero temperature, and reproducing the universal and experimentally verified value at zero frequency. Moreover, we also show that a small but still measurable shift in the conductance minimum arises as a function of the second-nearest neighbors hopping t´, thus providing the possibility to directly measure this parameter in transport experiments.Fil: Falomir, Horacio Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Muñoz, Enrique. Facultad de Física, Pont. Univ. Católica de Chile; ChileFil: Loewe, Marcelo. Facultad de Física, Pont. Univ. Católica de Chile; ChileFil: Zamora, Renato. Universidad Diego Portales; ChileIOP Publishing2019-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/127436Falomir, Horacio Alberto; Muñoz, Enrique; Loewe, Marcelo; Zamora, Renato; Optical conductivity in an effective model for graphene: finite temperature corrections (015401); IOP Publishing; Journal of Physics A: Mathematical and Theoretical; 53; 12-2019; 1-211751-8113CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/1751-8121/ab57cbinfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/1751-8121/ab57cbinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:03:46Zoai:ri.conicet.gov.ar:11336/127436instacron: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:34982025-10-15 15:03:46.691CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Optical conductivity in an effective model for graphene: finite temperature corrections (015401)
title Optical conductivity in an effective model for graphene: finite temperature corrections (015401)
spellingShingle Optical conductivity in an effective model for graphene: finite temperature corrections (015401)
Falomir, Horacio Alberto
graphene
optical conductivity
finite temperature
chemical potential
title_short Optical conductivity in an effective model for graphene: finite temperature corrections (015401)
title_full Optical conductivity in an effective model for graphene: finite temperature corrections (015401)
title_fullStr Optical conductivity in an effective model for graphene: finite temperature corrections (015401)
title_full_unstemmed Optical conductivity in an effective model for graphene: finite temperature corrections (015401)
title_sort Optical conductivity in an effective model for graphene: finite temperature corrections (015401)
dc.creator.none.fl_str_mv Falomir, Horacio Alberto
Muñoz, Enrique
Loewe, Marcelo
Zamora, Renato
author Falomir, Horacio Alberto
author_facet Falomir, Horacio Alberto
Muñoz, Enrique
Loewe, Marcelo
Zamora, Renato
author_role author
author2 Muñoz, Enrique
Loewe, Marcelo
Zamora, Renato
author2_role author
author
author
dc.subject.none.fl_str_mv graphene
optical conductivity
finite temperature
chemical potential
topic graphene
optical conductivity
finite temperature
chemical potential
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this article, we investigate the temperature and chemical potential dependence of the optical conductivity of graphene, within a field theoretical representation in the continuum approximation, arising from an underlying tight-binding atomistic model, that includes up to second-nearest neighbors coupling. Our calculations allow us to obtain the dependence of the optical conductivity on frequency, temperature and finite chemical potential, thus generalizing our previously reported calculations at zero temperature, and reproducing the universal and experimentally verified value at zero frequency. Moreover, we also show that a small but still measurable shift in the conductance minimum arises as a function of the second-nearest neighbors hopping t´, thus providing the possibility to directly measure this parameter in transport experiments.
Fil: Falomir, Horacio Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Muñoz, Enrique. Facultad de Física, Pont. Univ. Católica de Chile; Chile
Fil: Loewe, Marcelo. Facultad de Física, Pont. Univ. Católica de Chile; Chile
Fil: Zamora, Renato. Universidad Diego Portales; Chile
description In this article, we investigate the temperature and chemical potential dependence of the optical conductivity of graphene, within a field theoretical representation in the continuum approximation, arising from an underlying tight-binding atomistic model, that includes up to second-nearest neighbors coupling. Our calculations allow us to obtain the dependence of the optical conductivity on frequency, temperature and finite chemical potential, thus generalizing our previously reported calculations at zero temperature, and reproducing the universal and experimentally verified value at zero frequency. Moreover, we also show that a small but still measurable shift in the conductance minimum arises as a function of the second-nearest neighbors hopping t´, thus providing the possibility to directly measure this parameter in transport experiments.
publishDate 2019
dc.date.none.fl_str_mv 2019-12
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/11336/127436
Falomir, Horacio Alberto; Muñoz, Enrique; Loewe, Marcelo; Zamora, Renato; Optical conductivity in an effective model for graphene: finite temperature corrections (015401); IOP Publishing; Journal of Physics A: Mathematical and Theoretical; 53; 12-2019; 1-21
1751-8113
CONICET Digital
CONICET
url http://hdl.handle.net/11336/127436
identifier_str_mv Falomir, Horacio Alberto; Muñoz, Enrique; Loewe, Marcelo; Zamora, Renato; Optical conductivity in an effective model for graphene: finite temperature corrections (015401); IOP Publishing; Journal of Physics A: Mathematical and Theoretical; 53; 12-2019; 1-21
1751-8113
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/1751-8121/ab57cb
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/1751-8121/ab57cb
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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 13.22299

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