Raman scattering of quasimodes in ZnO

descriptionPublicationkeyboard_double_arrow_right Article 10 Oct 2008Publisher:IOP PublishingJournal:Journal of Physics: Condensed Matter, volume 20, page 445,211 (issn: 0953-8984, eissn: 1361-648X,

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Authors: Alarcón-Lladó, Esther; Cuscó, Ramón; Artús, Lluís; Jiménez, Juan; Wang, B.; Callahan, M.;

doi: 10.1088/0953-8984/20/44/445211

handle: 10261/20067

Raman scattering of quasimodes in ZnO

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Abstract

The angular dependence of the optical phonons of high-quality bulk ZnO has been systematically studied by means of Raman scattering. We report the observation of quasi-TO and quasi-LO modes for propagation directions covering the whole a–c mixing plane using a beveled ZnO single crystal sample. Scattering experiments performed in two different configuration geometries indicate that birefringence effects are not relevant for the phonon analysis in this material. The observed angular dependence of the quasimode frequencies is in good agreement with Loudon’s model.

Work supported by the Spanish Government (project MAT2007-63617 and FPI Program).

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Related Organizations

Solid State Scientific Corporation (United States)
United States
University of Valladolid
Spain
Spanish National Research Council
Spain
United States Air Force Research Laboratory
United States

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