Experimental demonstration of the suppression of optical phonon splitting in 2D materials by Raman spectroscopy

Raman spectroscopy is one of the most extended experimental techniques to investigate thin-layered 2D materials. For a complete understanding and modeling of the Raman spectrum of a novel 2D material, it is often necessary to combine the experimental investigation to density functional theory calcul...

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Autores: De Luca, Marta|||0000-0001-6061-3261, Cartoixà, Xavier|||0000-0003-1905-5979, Indolese, David I.|||0000-0002-9436-8994, Martín Sánchez, Javier|||0000-0002-6601-9447, Watanabe, Kenji|||0000-0003-3701-8119, Taniguchi, Takashi|||0000-0002-1467-3105, Schönenberger, Christian, Trotta, Rinaldo|||0000-0002-9515-6790, Rurali, Riccardo|||0000-0002-4086-4191, Zardo, Ilaria|||0000-0002-8685-2305
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:292594
Acceso en línea:https://ddd.uab.cat/record/292594
https://dx.doi.org/urn:doi:10.1088/2053-1583/ab81b1
Access Level:acceso abierto
Palabra clave:DFT calculations
H-BN
Layer-by-layer stacking
Non-analytical corrections
Raman spectroscopy
Transition metal dichalcogenides
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spelling Experimental demonstration of the suppression of optical phonon splitting in 2D materials by Raman spectroscopyDe Luca, Marta|||0000-0001-6061-3261Cartoixà, Xavier|||0000-0003-1905-5979Indolese, David I.|||0000-0002-9436-8994Martín Sánchez, Javier|||0000-0002-6601-9447Watanabe, Kenji|||0000-0003-3701-8119Taniguchi, Takashi|||0000-0002-1467-3105Schönenberger, ChristianTrotta, Rinaldo|||0000-0002-9515-6790Rurali, Riccardo|||0000-0002-4086-4191Zardo, Ilaria|||0000-0002-8685-2305DFT calculationsH-BNLayer-by-layer stackingNon-analytical correctionsRaman spectroscopyTransition metal dichalcogenidesRaman spectroscopy is one of the most extended experimental techniques to investigate thin-layered 2D materials. For a complete understanding and modeling of the Raman spectrum of a novel 2D material, it is often necessary to combine the experimental investigation to density functional theory calculations. We provide the experimental proof of the fundamentally different behavior of polar 2D vs 3D systems regarding the effect of the dipole - dipole interactions, which in 2D systems ultimately lead to the absence of optical phonons splitting, otherwise present in 3D materials. We demonstrate that non-analytical corrections (NACs) should not be applied to properly model the Raman spectra of few-layered 2D materials, such as WSe2 and h-BN, corroborating recent theoretical predictions (Sohier et al 2017 Nano Lett. 17 3758-63). Our findings are supported by measurements performed on tilted samples that allow increasing the component of photon momenta in the plane of the flake, thus unambiguously setting the direction of an eventual NAC. We also investigate the influence of the parity of the number of layers and of the type of layer-by-layer stacking on the effect of NACs on the Raman spectra. 22020-01-0120202020-01-01Articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/292594https://dx.doi.org/urn:doi:10.1088/2053-1583/ab81b1reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 MAT2017-90024-PMinisterio de Economía y Competitividad https://doi.org/10.13039/501100003329 SEV-2015-0496Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2017/SGR-1506Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 TEC2015-67462-C2-1-RAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 RTI2018-097876-B-C21European Commission https://doi.org/10.13039/501100000780 785219European Commission https://doi.org/10.13039/501100000780 787414European Commission https://doi.org/10.13039/501100000780 679183open 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, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2925942026-06-06T12:50:31Z
dc.title.none.fl_str_mv Experimental demonstration of the suppression of optical phonon splitting in 2D materials by Raman spectroscopy
title Experimental demonstration of the suppression of optical phonon splitting in 2D materials by Raman spectroscopy
spellingShingle Experimental demonstration of the suppression of optical phonon splitting in 2D materials by Raman spectroscopy
De Luca, Marta|||0000-0001-6061-3261
DFT calculations
H-BN
Layer-by-layer stacking
Non-analytical corrections
Raman spectroscopy
Transition metal dichalcogenides
title_short Experimental demonstration of the suppression of optical phonon splitting in 2D materials by Raman spectroscopy
title_full Experimental demonstration of the suppression of optical phonon splitting in 2D materials by Raman spectroscopy
title_fullStr Experimental demonstration of the suppression of optical phonon splitting in 2D materials by Raman spectroscopy
title_full_unstemmed Experimental demonstration of the suppression of optical phonon splitting in 2D materials by Raman spectroscopy
title_sort Experimental demonstration of the suppression of optical phonon splitting in 2D materials by Raman spectroscopy
dc.creator.none.fl_str_mv De Luca, Marta|||0000-0001-6061-3261
Cartoixà, Xavier|||0000-0003-1905-5979
Indolese, David I.|||0000-0002-9436-8994
Martín Sánchez, Javier|||0000-0002-6601-9447
Watanabe, Kenji|||0000-0003-3701-8119
Taniguchi, Takashi|||0000-0002-1467-3105
Schönenberger, Christian
Trotta, Rinaldo|||0000-0002-9515-6790
Rurali, Riccardo|||0000-0002-4086-4191
Zardo, Ilaria|||0000-0002-8685-2305
author De Luca, Marta|||0000-0001-6061-3261
author_facet De Luca, Marta|||0000-0001-6061-3261
Cartoixà, Xavier|||0000-0003-1905-5979
Indolese, David I.|||0000-0002-9436-8994
Martín Sánchez, Javier|||0000-0002-6601-9447
Watanabe, Kenji|||0000-0003-3701-8119
Taniguchi, Takashi|||0000-0002-1467-3105
Schönenberger, Christian
Trotta, Rinaldo|||0000-0002-9515-6790
Rurali, Riccardo|||0000-0002-4086-4191
Zardo, Ilaria|||0000-0002-8685-2305
author_role author
author2 Cartoixà, Xavier|||0000-0003-1905-5979
Indolese, David I.|||0000-0002-9436-8994
Martín Sánchez, Javier|||0000-0002-6601-9447
Watanabe, Kenji|||0000-0003-3701-8119
Taniguchi, Takashi|||0000-0002-1467-3105
Schönenberger, Christian
Trotta, Rinaldo|||0000-0002-9515-6790
Rurali, Riccardo|||0000-0002-4086-4191
Zardo, Ilaria|||0000-0002-8685-2305
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv DFT calculations
H-BN
Layer-by-layer stacking
Non-analytical corrections
Raman spectroscopy
Transition metal dichalcogenides
topic DFT calculations
H-BN
Layer-by-layer stacking
Non-analytical corrections
Raman spectroscopy
Transition metal dichalcogenides
description Raman spectroscopy is one of the most extended experimental techniques to investigate thin-layered 2D materials. For a complete understanding and modeling of the Raman spectrum of a novel 2D material, it is often necessary to combine the experimental investigation to density functional theory calculations. We provide the experimental proof of the fundamentally different behavior of polar 2D vs 3D systems regarding the effect of the dipole - dipole interactions, which in 2D systems ultimately lead to the absence of optical phonons splitting, otherwise present in 3D materials. We demonstrate that non-analytical corrections (NACs) should not be applied to properly model the Raman spectra of few-layered 2D materials, such as WSe2 and h-BN, corroborating recent theoretical predictions (Sohier et al 2017 Nano Lett. 17 3758-63). Our findings are supported by measurements performed on tilted samples that allow increasing the component of photon momenta in the plane of the flake, thus unambiguously setting the direction of an eventual NAC. We also investigate the influence of the parity of the number of layers and of the type of layer-by-layer stacking on the effect of NACs on the Raman spectra.
publishDate 2020
dc.date.none.fl_str_mv 2
2020-01-01
2020
2020-01-01
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/292594
https://dx.doi.org/urn:doi:10.1088/2053-1583/ab81b1
url https://ddd.uab.cat/record/292594
https://dx.doi.org/urn:doi:10.1088/2053-1583/ab81b1
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 MAT2017-90024-P
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 SEV-2015-0496
Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2017/SGR-1506
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 TEC2015-67462-C2-1-R
Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 RTI2018-097876-B-C21
European Commission https://doi.org/10.13039/501100000780 785219
European Commission https://doi.org/10.13039/501100000780 787414
European Commission https://doi.org/10.13039/501100000780 679183
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-nc-nd/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-nc-nd/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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