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dc.contributor.author | Manjón, Francisco-Javier | es_ES |
dc.contributor.author | Gallego-Parra, Samuel | es_ES |
dc.contributor.author | Rodríguez Hernández, Plácida | es_ES |
dc.contributor.author | Muñoz, Alfonso | es_ES |
dc.contributor.author | Drasar, Cestmir | es_ES |
dc.contributor.author | Muñoz-Sanjosé, Vicente | es_ES |
dc.contributor.author | Oeckler, Oliver | es_ES |
dc.date.accessioned | 2022-09-29T18:04:40Z | |
dc.date.available | 2022-09-29T18:04:40Z | |
dc.date.issued | 2021-05-21 | es_ES |
dc.identifier.issn | 2050-7526 | es_ES |
dc.identifier.uri | http://hdl.handle.net/10251/186747 | |
dc.description.abstract | [EN] Two anomalous broad bands are usually found in the Raman spectrum of bulk and 2D Te-based chalcogenides, which include binary compounds, like ZnTe, CdTe, HgTe, GaTe, GeTe, SnTe, PbTe, GeTe2, As2Te3, Sb2Te3, Bi2Te3, NiTe2, IrTe2, and TiTe2, as well as ternary compounds, like GaGeTe, SnSb2Te4, SnBi2Te4, and GeSb2Te5. Many different explanations have been proposed in the literature for the origin of the anomalous broad bands in tellurides, usually located between 119 and 145 cm(-1). They have been attributed to the intrinsic Raman modes of the sample, to oxidation of the sample, to the folding of Brillouin-edge modes onto the zone center, to the existence of a double resonance, like that of graphene, or to the formation of Te precipitates. In this paper, we provide arguments to demonstrate that such bands correspond to clusters or precipitates of trigonal Te in the form of nanosize or microsize grains or layers that are segregated either inside or at the surface of the samples. Several mechanisms for Te segregation are discussed and sample heating caused by excessive laser power during Raman scattering measurements is emphasized. Besides, we show that anomalous Raman modes related to Se precipitates also occur in selenides, thus providing a general vision for better characterization of selenides and tellurides by means of Raman scattering measurements and for a better understanding of chalcogenides in general. | es_ES |
dc.description.sponsorship | This work has been performed under financial support from the Spanish Ministry of Science, Innovation and Universities, the Spanish Research Agency (AEI), and the European Fund for Regional Development (FEDER) under grants TEC2017-85912C2-2, RED2018-102612-T (MALTA-CONSOLIDER TEAM network) and PID2019-106383 GB-C42/C43. We are also thankful for financial support from Generalitat Valenciana under grant PROMETEO/2018/123 (EFIMAT). The authors also acknowledge Dr Philipp Urban for performing the synthesis of SnBi2Te4. | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | The Royal Society of Chemistry | es_ES |
dc.relation.ispartof | Journal of Materials Chemistry C | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Lattice-Dynamics | es_ES |
dc.subject | Gallium | es_ES |
dc.subject | Telluride Trigonal Se | es_ES |
dc.subject | Scattering | es_ES |
dc.subject | Te | es_ES |
dc.subject | Spectrum | es_ES |
dc.subject | Phonons | es_ES |
dc.subject | Films | es_ES |
dc.subject | Thickness | es_ES |
dc.subject | Pressure | es_ES |
dc.subject.classification | FISICA APLICADA | es_ES |
dc.title | Anomalous Raman modes in tellurides | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1039/d1tc00980j | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106383GB-C42/ES/SESQUIOXIDOS Y COMPUESTOS METAVALENTES BAJO CONDICIONES EXTREMAS/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//PID2019-106383 GB-C43/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/EC//TEC2017-85912C2-2/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/Generalitat Valenciana//GVPROMETEO2018-123//Materiales avanzados para el uso eficiente de la energia (EFIMAT)/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/AEI//RED2018-102612-T//MALTA- CONSOLIDER TEAM/ | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Instituto de Diseño para la Fabricación y Producción Automatizada - Institut de Disseny per a la Fabricació i Producció Automatitzada | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada | es_ES |
dc.description.bibliographicCitation | Manjón, F.; Gallego-Parra, S.; Rodríguez Hernández, P.; Muñoz, A.; Drasar, C.; Muñoz-Sanjosé, V.; Oeckler, O. (2021). Anomalous Raman modes in tellurides. Journal of Materials Chemistry C. 9(19):6277-6289. https://doi.org/10.1039/d1tc00980j | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | https://doi.org/10.1039/d1tc00980j | es_ES |
dc.description.upvformatpinicio | 6277 | es_ES |
dc.description.upvformatpfin | 6289 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 9 | es_ES |
dc.description.issue | 19 | es_ES |
dc.relation.pasarela | S\442899 | es_ES |
dc.contributor.funder | European Commission | es_ES |
dc.contributor.funder | Generalitat Valenciana | es_ES |
dc.contributor.funder | AGENCIA ESTATAL DE INVESTIGACION | es_ES |
dc.contributor.funder | European Regional Development Fund | es_ES |
dc.contributor.funder | Ministerio de Educación y Ciencia e Innovación | es_ES |