Anharmonic effects in ZnO optical phonons probed by Raman spectroscopy

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URI: http://hdl.handle.net/10902/23620
ISSN: 0003-6951
ISSN: 1077-3118
ISSN: 1520-8842
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Autoría
Millot, Marius; Tena-Zaera, Ramón; Muñoz-Sanjose, Vicente; Broto, Jean-Marc; González Gómez, Jesús AntonioAutoridad Unican
Fecha
2010
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© American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in MILLOT, Marius, et al. Anharmonic effects in ZnO optical phonons probed by Raman spectroscopy. Applied Physics Letters, 2010, vol. 96, no 15, p. 152103 and may be found at https://aip.scitation.org/doi/10.1063/1.3387843
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Appl. Phys. Lett. 96, 152103 (2010)
Editorial
American Institute of Physics
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Resumen/Abstract
We report Raman spectroscopy measurements on ZnO crystals grown by the vapor transport method and annealed. Vacuum annealing is found to yield single crystals with ultra low density of defects. We focus on the optical E2 phonon linewidth temperature dependence in the 10?500 K range. The linewidth decrease at low temperature is analyzed and discussed in the light of anharmonic up- and down-conversion processes, unveiling strongly different behaviors for the two E2 phonons.
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