Symmetry-derived selection rules for plasmon-enhanced Raman scattering

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dc.creatorAdo Jorio de Vasconcelos
dc.creatorNiclas Sven Mueller
dc.creatorStephanie Reich
dc.date.accessioned2022-06-06T17:28:57Z
dc.date.accessioned2025-09-08T23:07:35Z
dc.date.available2022-06-06T17:28:57Z
dc.date.issued2017-04-07
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.95.155409
dc.identifier.issn2469-9969
dc.identifier.urihttps://hdl.handle.net/1843/42282
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review B
dc.rightsAcesso Restrito
dc.subjectEspalhamento Raman
dc.subjectGrafeno
dc.subject.otherSERS
dc.subject.otherTERS
dc.subject.otherSurface-enhanced Raman scattering
dc.subject.otherTip-enhanced Raman scattering
dc.subject.otherGraphene
dc.titleSymmetry-derived selection rules for plasmon-enhanced Raman scattering
dc.typeArtigo de periódico
local.citation.epage155409-10
local.citation.issue15
local.citation.spage155409-1
local.citation.volume95
local.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.
local.identifier.orcidhttps://orcid.org/0000-0002-5978-2735
local.identifier.orcidhttps://orcid.org/0000-0002-8688-1974
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.155409

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