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dc.contributor.authorRodríguez-Fernández, Carloses_ES
dc.contributor.authorManzano, Cristina V.es_ES
dc.contributor.authorRomero, Aldo H.es_ES
dc.contributor.authorMartín Pérez, Jaimees_ES
dc.contributor.authorMartín-González, Marisoles_ES
dc.contributor.authorMorais, Mauricioes_ES
dc.contributor.authorCantarero, Andréses_ES
dc.date.accessioned2019-05-14T09:07:39Z-
dc.date.available2019-05-14T09:07:39Z-
dc.date.issued2016-01-19-
dc.identifier.citationNanotechnology 27(7): 075706 (2016)es_ES
dc.identifier.issn0957-4484-
dc.identifier.urihttp://hdl.handle.net/10261/181366-
dc.description.abstractWe unambiguously show that the signature of Te-rich bismuth telluride is the appearance of three new peaks in the Raman spectra of Bi2Te3, located at 88, 117 and 137 cm−1 . For this purpose, we have grown stoichiometric Bi2Te3 nanowires as well as Te-rich nanowires. The absence of these peaks in stoichiometric nanowires, even in those with the smallest diameter, shows that they are not related to confinement effects or the lack of inversion symmetry, as stated in the literature, but to the existence of Te clusters. These Te clusters have been found in nonstoichiometric samples by high resolution electron microscopy, while they are absent in stoichiometric samples. The Raman spectra of the latter corresponds to the one for bulk Bi2Te3. The intensity of these Raman peaks are clearly correlated to the Te content. In order to ensure statistically meaningful results, we have investigated several regions from every samplees_ES
dc.description.sponsorshipWe thank the Ministry of Finances and Competitiveness for its financial support through the grants CSD2010–0044 of the Programme Consolider Ingenio, MAT2012–33843, and MAT2011–27911 as well as the FPI programme for young researchers. We also thank the University of Valencia for the use of the supercomputer Tirant. Financial support from the European Research Council through ERC 2008 Starting Grant number 240497 is also gratefully acknowledged. Finally, we would like to thank Dr. Said Agouram for his help with the HRTEM measurements.es_ES
dc.language.isoenges_ES
dc.publisherInstitute of Physics Publishinges_ES
dc.relationinfo:eu-repo/grantAgreement/EC/FP7/240497es_ES
dc.rightsclosedAccesses_ES
dc.subjectRaman spectroscopyes_ES
dc.subjectBismuth telluridees_ES
dc.subjectThermoelectricityes_ES
dc.subjectTEM-EDXes_ES
dc.titleThe fingerprint of Te-rich and stoichiometric Bi2Te3 nanowires by Raman spectroscopyes_ES
dc.typeartículoes_ES
dc.identifier.doi10.1088/0957-4484/27/7/075706-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1088/0957-4484/27/7/075706es_ES
dc.identifier.e-issn1361-6528-
dc.contributor.funderMinisterio de Economía y Competitividad (España)es_ES
dc.contributor.funderEuropean Research Counciles_ES
dc.contributor.funderEuropean Commissiones_ES
dc.relation.csices_ES
oprm.item.hasRevisionno ko 0 false*
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000781es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000780es_ES
dc.contributor.orcidCantarero, Andrés [0000-0003-1999-4933]es_ES
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