Bending mode fluctuations and structural stability of graphene nanoribbons

We analyze the thermal fluctuations of a narrow graphene nanoribbon. Using a continuum membranelike model in the harmonic approximation, we study the height-height correlation functions and the destabilization modes corresponding to two different boundary conditions: fixed and free edges. For the fi...

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Authors: Scuracchio, Pablo Martín, Dobry, Ariel Oscar
Format: article
Status:Published version
Publication Date:2013
Country:Argentina
Institution:Consejo Nacional de Investigaciones Científicas y Técnicas
Repository:CONICET Digital (CONICET)
Language:English
OAI Identifier:oai:ri.conicet.gov.ar:11336/5935
Online Access:http://hdl.handle.net/11336/5935
Access Level:Open access
Keyword:Graphene
Nanoribbons
Bending Modes
Thermal Fluctuations
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
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spelling Bending mode fluctuations and structural stability of graphene nanoribbonsScuracchio, Pablo MartínDobry, Ariel OscarGrapheneNanoribbonsBending ModesThermal Fluctuationshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We analyze the thermal fluctuations of a narrow graphene nanoribbon. Using a continuum membranelike model in the harmonic approximation, we study the height-height correlation functions and the destabilization modes corresponding to two different boundary conditions: fixed and free edges. For the first case, the thermal spectrum has a gap and the correlations along the ribbon decay exponentially. Thermal fluctuations produce only local perturbations of the flat situation. However, the long range crystalline order is not distorted. For free edges the situation changes as thermal excitations are gapless. The low energy spectrum decouples into a bulk and an edge excitation. The bulk excitation tends to destabilize the crystalline order producing a homogeneous rippling. Furthermore, we can relate the edge mode to a precluding perturbation leading to scrolled edges, as seen in suspended graphene samples. We also analyze the implications of our results in the thermal conductivity of graphene nanoribbons.Fil: Scuracchio, Pablo Martín. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); ArgentinaFil: Dobry, Ariel Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; ArgentinaAmerican Physical Society2013-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5935Scuracchio, Pablo Martín; Dobry, Ariel Oscar; Bending mode fluctuations and structural stability of graphene nanoribbons; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 87; 16; 4-2013; 165411-1654111098-0121enginfo:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.87.165411info:eu-repo/semantics/altIdentifier/url/http://arxiv.org/abs/1212.4792v1info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.87.165411info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T14:27:34Zoai:ri.conicet.gov.ar:11336/5935instacron: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:34982024-05-08 14:27:34.316CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Bending mode fluctuations and structural stability of graphene nanoribbons
title Bending mode fluctuations and structural stability of graphene nanoribbons
spellingShingle Bending mode fluctuations and structural stability of graphene nanoribbons
Scuracchio, Pablo Martín
Graphene
Nanoribbons
Bending Modes
Thermal Fluctuations
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
title_short Bending mode fluctuations and structural stability of graphene nanoribbons
title_full Bending mode fluctuations and structural stability of graphene nanoribbons
title_fullStr Bending mode fluctuations and structural stability of graphene nanoribbons
title_full_unstemmed Bending mode fluctuations and structural stability of graphene nanoribbons
title_sort Bending mode fluctuations and structural stability of graphene nanoribbons
dc.creator.none.fl_str_mv Scuracchio, Pablo Martín
Dobry, Ariel Oscar
author Scuracchio, Pablo Martín
author_facet Scuracchio, Pablo Martín
Dobry, Ariel Oscar
author_role author
author2 Dobry, Ariel Oscar
author2_role author
dc.subject.none.fl_str_mv Graphene
Nanoribbons
Bending Modes
Thermal Fluctuations
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
topic Graphene
Nanoribbons
Bending Modes
Thermal Fluctuations
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
description We analyze the thermal fluctuations of a narrow graphene nanoribbon. Using a continuum membranelike model in the harmonic approximation, we study the height-height correlation functions and the destabilization modes corresponding to two different boundary conditions: fixed and free edges. For the first case, the thermal spectrum has a gap and the correlations along the ribbon decay exponentially. Thermal fluctuations produce only local perturbations of the flat situation. However, the long range crystalline order is not distorted. For free edges the situation changes as thermal excitations are gapless. The low energy spectrum decouples into a bulk and an edge excitation. The bulk excitation tends to destabilize the crystalline order producing a homogeneous rippling. Furthermore, we can relate the edge mode to a precluding perturbation leading to scrolled edges, as seen in suspended graphene samples. We also analyze the implications of our results in the thermal conductivity of graphene nanoribbons.
publishDate 2013
dc.date.none.fl_str_mv 2013-04
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/11336/5935
Scuracchio, Pablo Martín; Dobry, Ariel Oscar; Bending mode fluctuations and structural stability of graphene nanoribbons; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 87; 16; 4-2013; 165411-165411
1098-0121
url http://hdl.handle.net/11336/5935
identifier_str_mv Scuracchio, Pablo Martín; Dobry, Ariel Oscar; Bending mode fluctuations and structural stability of graphene nanoribbons; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 87; 16; 4-2013; 165411-165411
1098-0121
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.87.165411
info:eu-repo/semantics/altIdentifier/url/http://arxiv.org/abs/1212.4792v1
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.87.165411
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
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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
_version_ 1799196431448276992
score 15,811543

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