Micro-Raman Studies of Zincblende MgS

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

Micro-Raman Studies of Zincblende MgS

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

Department of Physics

Research output: Contribution to conference › Paper › peer-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 language	English
Pages	2779-2781
Number of pages	3
Publication status	Published - 2007
Event	13th International Conference on II-VI Compounds - Jeju City, South Korea Duration: 10 Sept 2007 → 14 Sept 2007

Conference

Conference	13th International Conference on II-VI Compounds
City	Jeju City, South Korea
Period	10/09/07 → 14/09/07

Cite this

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title = "Micro-Raman Studies of Zincblende MgS",

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.",

author = "Daniel Wolverson and Smith, {L C} and C Bradford and Cavenett, {B C} and Prior, {K A}",

year = "2007",

language = "English",

pages = "2779--2781",

note = "13th International Conference on II-VI Compounds ; Conference date: 10-09-2007 Through 14-09-2007",

}

TY - CONF

T1 - Micro-Raman Studies of Zincblende MgS

AU - Wolverson, Daniel

AU - Smith, L C

AU - Bradford, C

AU - Cavenett, B C

AU - Prior, K A

PY - 2007

Y1 - 2007

N2 - 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.

AB - 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.

M3 - Paper

SP - 2779

EP - 2781

T2 - 13th International Conference on II-VI Compounds

Y2 - 10 September 2007 through 14 September 2007

ER -

Micro-Raman Studies of Zincblende MgS

Abstract

Conference

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