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Title

Brillouin scattering determination of the surface acoustic wave velocity in In xGa 1-xN: A probe into the elastic constants

AuthorsJiménez Riobóo, R. J. ; Cuscó, Ramón ; Oliva, Ramón; Domènech-Amador, Núria ; Prieto, C. ; Ibáñez Insa, Jordi ; Boney, C.; Bensaoula, A.; Artús, Lluís
Issue Date2012
PublisherAmerican Institute of Physics
CitationApplied Physics Letters 101 (2012)
AbstractWe have determined the surface acoustic wave velocity in In xGa 1-xN layers for 0.34 x 0.75 by means of high resolution Brillouin spectroscopy. The sagittal dependence of the surface acoustic velocity has been analyzed by comparing the experimental results with theoretical simulations based on the Green's function formalism. We find the best agreement with our data when the bowing parameters for the elastic constants recently reported from density functional theory calculations are taken into account. The dependence of the surface acoustic wave velocity on alloy composition is given. © 2012 American Institute of Physics.
Publisher version (URL)http://dx.doi.org/10.1063/1.4744961
URIhttp://hdl.handle.net/10261/77338
DOI10.1063/1.4744961
Identifiersdoi: 10.1063/1.4744961
issn: 0003-6951
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