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dc.contributor.authorDe Luca, Martaes_ES
dc.contributor.authorCartoixà, Xavieres_ES
dc.contributor.authorIndolese, David I.es_ES
dc.contributor.authorMartín-Sánchez, Javieres_ES
dc.contributor.authorWatanabe, Kenjies_ES
dc.contributor.authorTaniguchi, Takashies_ES
dc.contributor.authorSchönenberger, Christianes_ES
dc.contributor.authorTrotta, Rinaldoes_ES
dc.contributor.authorRurali, Riccardoes_ES
dc.contributor.authorZardo, Ilariaes_ES
dc.date.accessioned2020-09-07T10:01:48Z-
dc.date.available2020-09-07T10:01:48Z-
dc.date.issued2020-
dc.identifier.citation2D Materials 7: 035017 (2020)es_ES
dc.identifier.urihttp://hdl.handle.net/10261/219235-
dc.description.abstractRaman 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.es_ES
dc.description.sponsorshipI Z acknowledges the Swiss National Science Foundation research grant (Project Grant No. 200021_165784). M D L acknowledges support from the Swiss National Science Foundation Ambizione grant (Grant No. PZ00P2_179801). R R acknowledges support from the Ministerio de Economía, Industria y Competitividad (MINECO) under grant FEDER-MAT2017-90024-P and the Severo Ochoa Centres of Excellence Program under grant SEV-2015-0496 and by the Generalitat de Catalunya under Grant Nos. 2017 SGR 1506. X C acknowledges financial support by the Ministerio de Economía, Industria y Competitividad under grant TEC2015-67462-C2-1-R (MINECO/FEDER), the Ministerio de Ciencia, Innovación y Universidades under Grant No. RTI2018-097876-B-C21 (MCIU/AEI/FEDER, UE), and the EU Horizon2020 research and innovation program under Grant No. GrapheneCore2: 785219. C S and D I acknowledge support by the Swiss Nanoscience Institute (SNI), the ERC project TopSupra (787414), the European Union Horizon 2020 research and innovation program under grant agreement No. 785219 (Graphene Flagship), the Swiss National Science Foundation and the Swiss NCCR QSIT. J.M.-S. acknowledges support through a Clarín Marie Curie-COFUND grant from the Government of the Principality of Asturias and the EU (PA-18-ACB17-29), and the Ramón y Cajal Program (RYC2018-026196-I) from the Government of Spain. R T acknowledges support by European Union's Horizon 2020 research and innovation programme (SPQRel grant agreement no. 679183). K W and T T acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan and the CREST(JPMJCR15F3), JST.es_ES
dc.language.isoenges_ES
dc.publisherIOP Publishinges_ES
dc.relationMICIU/ICTI2017-2020/MAT2017-90024-Pes_ES
dc.relationMAT2017-90024-P/AEI/10.13039/501100011033es_ES
dc.relationMINECO/ICTI2013-2016/SEV-2015-0496es_ES
dc.relationMINECO/ICTI2013-2016/TEC2015-67462-C2-1-Res_ES
dc.relationMICIU/ICTI2017-2020/RTI2018-097876-B-C21es_ES
dc.relationRTI2018-097876-B-C21/AEI/10.13039/501100011033es_ES
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/785219es_ES
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/787414es_ES
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/679183es_ES
dc.relationMICIU/ICTI2017-2020/RYC-2018-026196-Ies_ES
dc.relationRYC-2018-026196-I/AEI/10.13039/501100011033es_ES
dc.relation.isversionofPostprint-
dc.rightsopenAccessen_EN
dc.titleExperimental demonstration of the suppression of optical phonon splitting in 2D materials by Raman spectroscopyes_ES
dc.typeartículoes_ES
dc.identifier.doihttp://dx.doi.org/10.1088/2053-1583/ab81b1-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttps://doi.org/10.1088/2053-1583/ab81b1es_ES
dc.identifier.e-issn2053-1583-
dc.contributor.funderSwiss National Science Foundationes_ES
dc.contributor.funderAgencia Estatal de Investigación (España)es_ES
dc.contributor.funderMinisterio de Ciencia, Innovación y Universidades (España)es_ES
dc.contributor.funderMinisterio de Economía y Competitividad (España)es_ES
dc.contributor.funderEuropean Commissiones_ES
dc.contributor.funderGeneralitat de Catalunyaes_ES
dc.contributor.funderSwiss Nanoscience Institutees_ES
dc.contributor.funderEuropean Research Counciles_ES
dc.contributor.funderPrincipado de Asturiases_ES
dc.contributor.funderMinistry of Education, Culture, Sports, Science and Technology (Japan)es_ES
dc.relation.csices_ES
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dc.identifier.funderhttp://dx.doi.org/10.13039/501100000781es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100002809es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/100011963es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100001700es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100011033es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000780es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/100011941es_ES
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