One phonon resonant Raman scattering in a quantized spherical film

We have presented a theoretical calculation of the differential cross section (DCS) for the electron Raman scattering (ERS) process associated with surface optical (SO) phonon modes in a semiconductor quantized spherical film. We consider the Fröhlich electron–phonon interaction in the framework of...

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Bibliographic Details
Published inSuperlattices and microstructures Vol. 47; no. 6; pp. 723 - 731
Main Authors Zhong, Qing-Hu, Yi, Xue-Hua
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.06.2010
Subjects
Cross sections
Dielectrics
Frequency shift
Mathematical analysis
Optical phonon modes
Phonons
Quantum film
Raman scattering
Semiconductors
Singularities
Raman scattering
Quantum film
Optical phonon modes
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Summary:We have presented a theoretical calculation of the differential cross section (DCS) for the electron Raman scattering (ERS) process associated with surface optical (SO) phonon modes in a semiconductor quantized spherical film. We consider the Fröhlich electron–phonon interaction in the framework of the dielectric continuum approach. We study the selection rules for the processes. Singularities are found to be size-dependent and by varying the size of the QDs, it is possible to control the frequency shift in the Raman spectrum. A discussion of the phonon behavior for the films with large and small size is presented. The numerical results are also compared with that of experiments.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0749-6036
1096-3677
DOI:10.1016/j.spmi.2010.03.010