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Surface acoustic wave velocity and elastic constants of cubic GaN

AuthorsJiménez Riobóo, R. J. ; Cuscó, Ramón ; Prieto, C. ; Kopittke, Caroline; Novikov, S. V.; Artús, Lluís
KeywordsAcoustic surface wave devices
Acoustic wave velocity
Acoustic waves
Brillouin scattering
Elastic constants
Gallium nitride
Surface scattering
Surface waves
Wave propagation
Azimuthal dependence
GaAs substrates
High resolution
Scattering geometries
Surface acoustic wave velocities
Surface acoustic waves
Surface brillouin scattering
Surface wave velocity
Issue DateJun-2016
CitationApplied Physics Express 9(6): 061001 (2016)
AbstractWe present high-resolution surface Brillouin scattering measurements on cubic GaN layers grown on GaAs substrate. By using a suitable scattering geometry, scattering by surface acoustic waves is recorded for different azimuthal angles, and the surface acoustic wave velocities are determined. A comparison of experimental results with numerical simulations of the azimuthal dependence of the surface wave velocity shows good agreement and allows a consistent set of elastic constants for c-GaN to be determined. © 2016 The Japan Society of Applied Physics.
Publisher version (URL)http://dx.doi.org/10.7567/APEX.9.061001
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(ICMM) Artículos
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