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Phonons in nanostructures
Interface and confined polar optical phonons in spherical ZnO quantum dots with wurtzite crystal structure
Article first published online: 16 NOV 2004
DOI: 10.1002/pssc.200405373
Copyright © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Issue
physica status solidi (c)
Special Issue: The 11th International Conference on Phonon Scattering in Condensed Matter (Phonons2004)
Volume 1, Issue 11, pages 2650–2653, November 2004
Additional Information
How to Cite
Fonoberov, V. A. and Balandin, A. A. (2004), Interface and confined polar optical phonons in spherical ZnO quantum dots with wurtzite crystal structure. physica status solidi (c), 1: 2650–2653. doi: 10.1002/pssc.200405373
Publication History
- Issue published online: 16 NOV 2004
- Article first published online: 16 NOV 2004
- Manuscript Accepted: 6 SEP 2004
- Manuscript Revised: 13 AUG 2004
- Manuscript Received: 15 MAY 2004
- Abstract
- References
- Cited By
Keywords:
- 63.22.+m;
- 78.30.Fs;
- 78.67.Hc
Abstract
We derive analytically the interface and confined polar optical-phonon modes for spherical quantum dots with wurtzite crystal structure. While the frequency of confined optical phonons in zincblende nanocrystals is equal to that of the bulk crystal phonons, the confined polar optical phonons in wurtzite nanocrystals are shown to have a discrete spectrum of frequencies different from those in bulk crystal. The calculated frequencies of confined polar optical phonons in wurtzite ZnO quantum dots are found to be in excellent agreement with experimental resonant Raman scattering data. The derived analytical expression for phonon modes can facilitate interpretation of experimental data obtained for ZnO quantum dots. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)