Deformation potential dominated phonons in ZnS quantum dots

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

Strong deformation potential (DP) dominated Raman spectra are reported for quantum confined cubic ZnS nanoclusters under off-resonance conditions allowed only in quantum dots. A flurry of zone boundary phonons is demonstrated in the scattering process. Transverse optic (TO) mode in the multi-phonon process shows only even order overtones suggesting the dominance of a two-phonon process (having large DP value in ZnS) and its integral multiples. Two-phonon TO modes corresponding to A1 and B2 symmetries are also demonstrated under off-resonance conditions which are allowed only in quantum dots.
14 pages, 4 figures, Submitted in Journal

Keywords

Optics, General Physics

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/164195

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0709.1773
 http://arxiv.org/abs/0709.1773

Collections

arXiv