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Raman scattering from the bulk inactive out-of-plane B12g mode in few-layer MoTe2

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dc.abstract.enWe report a study of Raman scattering in few-layer MoTe2 focused on high-frequency out-of-plane vibrational modes near 291 cm−1 which are associated with the bulk-inactive B2g1 mode. Our temperature-dependent measurements reveal a double peak structure of the feature related to these modes in the Raman scattering spectra of 4- and 5-layer MoTe2. In accordance with literature data, the doublet’s lower- and higher-energy components are ascribed to the Raman-active A1g/′A1 vibrations involving, respectively, only the inner and surface layers. We demonstrate a strong enhancement of the inner mode’s intensity at low temperature for 1.91 eV and 1.96 eV laser light excitation which suggests a resonant character of the Raman scattering processes probed under such conditions. A resonance of the laser light with a singularity of the electronic density of states at the M point of the MoTe2 Brillouin zone is proposed to be responsible for the observed effects.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorPotemski, Marek
dc.contributor.authorBabiński, Adam
dc.contributor.authorZinkiewicz, Małgorzata
dc.contributor.authorGołasa, Katarzyna
dc.contributor.authorNogajewski, Karol
dc.contributor.authorMolas, Maciej
dc.contributor.authorWysmołek, Andrzej
dc.contributor.authorGrzeszczyk, Magdalena
dc.date.accessioned2024-01-25T18:46:12Z
dc.date.available2024-01-25T18:46:12Z
dc.date.issued2018
dc.description.financeNie dotyczy
dc.description.number17745
dc.description.volume8
dc.identifier.doi10.1038/S41598-018-35510-4
dc.identifier.issn2045-2322
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/117837
dc.identifier.weblinkhttps://www.nature.com/articles/s41598-018-35510-4.pdf
dc.languageeng
dc.pbn.affiliationphysical sciences
dc.relation.ispartofScientific Reports
dc.relation.pages1-9
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titleRaman scattering from the bulk inactive out-of-plane B12g mode in few-layer MoTe2
dc.typeJournalArticle
dspace.entity.typePublication