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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/42282
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dc.creatorAdo Jorio de Vasconcelospt_BR
dc.creatorNiclas Sven Muellerpt_BR
dc.creatorStephanie Reichpt_BR
dc.date.accessioned2022-06-06T17:28:57Z-
dc.date.available2022-06-06T17:28:57Z-
dc.date.issued2017-04-07-
dc.citation.volume95pt_BR
dc.citation.issue15pt_BR
dc.citation.spage155409-1pt_BR
dc.citation.epage155409-10pt_BR
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.95.155409pt_BR
dc.identifier.issn2469-9969pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/42282-
dc.description.resumoWe show how to obtain the symmetry-imposed selection rules for plasmonic enhancement in surface- (SERS) and tip-enhanced Raman scattering (TERS). Plasmon-enhanced light scattering is described as a higher-order Raman process, which introduces a series of Hamiltonians representing the interaction between light, plasmons, electrons, and phonons. Using group theory, we derive the active representations for point group symmetries of exemplary plasmonic nanostructures. The phonon representations that are enhanced by SERS and TERS are then found as induced representations for the symmetry group of the molecule or another Raman probe. The selection rules are discussed for graphene that is coupled to a nanodisk dimer as an example for SERS and coupled to a tip as a TERS example. The phonon eigenmodes that are enhanced depend on the symmetry breaking when combining the plasmonic structures with graphene.We show that the most prominent optical phonon modes (E2g and A1g) are allowed in all scattering configurations when using a nanodimer as a plasmonic hotspot.We predict the activation of the silent B2g as well as infrared-active A2u and E1u modes in SERS for crossed configurations of the incoming and scattered light. There is a systematic difference between spatially coherent and incoherent plasmon-enhanced Raman scattering, which is responsible for a dependence of TERS on the phonon coherence length.pt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofPhysical Review Bpt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectSERSpt_BR
dc.subjectTERSpt_BR
dc.subjectSurface-enhanced Raman scatteringpt_BR
dc.subjectTip-enhanced Raman scatteringpt_BR
dc.subjectGraphenept_BR
dc.subject.otherEspalhamento Ramanpt_BR
dc.subject.otherGrafenopt_BR
dc.titleSymmetry-derived selection rules for plasmon-enhanced Raman scatteringpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.155409pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-5978-2735pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8688-1974pt_BR
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