On the origin of the Raman scattering in heavily boron-doped diamond

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dc.creatorVlasov, I. I.
dc.creatorEkimov, E. A.
dc.creatorBasov, A. A.
dc.creatorGoovaerts, E.
dc.creatorZoteev, A. V.
dc.date2008-01-10
dc.date.accessioned2026-07-07T08:53:40Z
dc.date.available2026-07-07T08:53:40Z
dc.descriptionIsotopic substitution of boron and carbon is applied for the identification of the vibrational modes of heavily boron-doped diamond synthesized by high-pressure high-temperature technique. None of the bands in the Raman spectra are shifting upon ^{10}B-substitution, whereas shifts to lower frequency are observed for all bands upon ^{13}C-substitution as compared to a sample with natural isotope abundancies. These isotopic substitution experiments exclude the hypothesis of boron dimer related normal modes and strongly support the assignment of the previously studied "500 cm^{-1}" and "1230 cm^{-1}" bands and two weak bands at 1003 cm^{-1} and 1070 cm^{-1} to perturbed diamond lattice phonons, revealing the phonon density of states. A second-order phonon spectrum at combination and overtone frequencies is also identified. A bulk plasmon related mechanism is proposed for the enhancement of the phonon density of states spectrum relative to the zone-center phonons.
dc.description7 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/0801.1611
dc.identifierhttp://arxiv.org/abs/0801.1611
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/145704
dc.subjectMaterials Science
dc.titleOn the origin of the Raman scattering in heavily boron-doped diamond
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