Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/139833
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dc.contributor.authorCuscó, Ramónes_ES
dc.contributor.authorGil, Bernardes_ES
dc.contributor.authorCassabois, Guillaumees_ES
dc.contributor.authorArtús, Lluíses_ES
dc.date.accessioned2016-11-04T08:23:45Z-
dc.date.available2016-11-04T08:23:45Z-
dc.date.issued2016-10-
dc.identifier.citationPhysical Review B - Condensed Matter and Materials Physics, 94(15): 155435 (2016)es_ES
dc.identifier.issn1098-0121-
dc.identifier.urihttp://hdl.handle.net/10261/139833-
dc.description.abstractWe present a Raman scattering study of optical phonons in hexagonal BN for temperatures ranging from 80 to 600 K. The experiments were performed on high-quality, single-crystalline hexagonal BN platelets. The observed temperature dependence of the frequencies and linewidths of both Raman active E2g optical phonons is analyzed in the framework of anharmonic decay theory, and possible decay channels are discussed in the light of density-functional theory calculations. With increasing temperature, the E2ghigh mode displays strong anharmonic interactions, with a linewidth increase that indicates an important contribution of four-phonon processes and a marked frequency downshift that can be attributed to a substantial effect of the four-phonon scattering processes (quartic anharmonicity). In contrast, the E2glow mode displays a very narrow linewidth and weak anharmonic interactions, with a frequency downshift that is primarily accounted for by the thermal expansion of the interlayer spacing. © 2016 American Physical Society.es_ES
dc.description.sponsorshipThis work has been financially supported by the Spanish MINECO under Contract No. MAT2015-71035-R. and by the network GaNeX (ANR-11-LABX-0014).es_ES
dc.language.isoenges_ES
dc.publisherAmerican Physical Societyes_ES
dc.relation.isversionofPublisher's versiones_ES
dc.rightsopenAccesses_ES
dc.subjectRaman scatteringes_ES
dc.subjectoptical phononses_ES
dc.titleTemperature dependence of Raman-active phonons and anharmonic interactions in layered hexagonal BNes_ES
dc.typeartículoes_ES
dc.identifier.doi10.1103/PhysRevB.94.155435-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1103/PhysRevB.94.155435es_ES
dc.identifier.e-issn1550-235X-
dc.contributor.funderMinisterio de Economía y Competitividad (España)es_ES
dc.relation.csices_ES
oprm.item.hasRevisionno ko 0 false*
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
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item.fulltextWith Fulltext-
item.grantfulltextopen-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
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