Micro-Raman Studies of Zincblende MgS

Daniel Wolverson, L C Smith, C Bradford, B C Cavenett, K A Prior

Research output: Contribution to conferencePaperpeer-review

Abstract

Recent improvements in UV Raman spectrometer capability have resulted from the availability of much improved dielectric filters, and we can now observe directly both the longitudinal and the transverse optic phonon modes of the wide-bandgap zincblende semiconductor MgS. We are, thus, able to confirm the earlier measured and calculated phonon frequencies with improved accuracy. The strong sequence of overtone modes that we observe is interpreted in terms of the resonance behavior of the Raman scattering process at this excitation energy. The spectra also show features which, by comparison to ab-initio calculations of the phonon dispersion and density of states, can be identified as arising from multiple Raman scattering processes involving longitudinal acoustic phonons near the Brillouin zone boundary.
Original languageEnglish
Pages2779-2781
Number of pages3
Publication statusPublished - 2007
Event13th International Conference on II-VI Compounds - Jeju City, South Korea
Duration: 10 Sep 200714 Sep 2007

Conference

Conference13th International Conference on II-VI Compounds
CityJeju City, South Korea
Period10/09/0714/09/07

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