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Surface acoustic waves and elastic constants of InN epilayers determined by Brillouin scattering |
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| Authors: | R J Jiménez‐Riobóo R Cuscó N Domènech‐Amador C Prieto T Yamaguchi Y Nanishi L Artús |
| Institution: | 1. Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, Madrid, 28049, Spain;2. Institut Jaume Almera, Consell Superior d'Investigacions Científiques (CSIC), Lluís Solé i Sabarís s.n., 08028 Barcelona, Catalonia, Spain;3. Faculty of Science and Engineering, Ritsumeikan University, 1‐1‐1 Noji‐Higashi, Kusatsu, Shiga 525‐8577, Japan |
| Abstract: | The surface acoustic wave velocity in InN has been experimentally determined by means of Brillouin scattering experiments on c ‐ and m ‐face epilayers. From simulations based on the Green's function formalism we determine the shear elastic constants c66 and c44 and propose a complete set of elastic constants for wurtzite InN. The analysis of the sagittal and azimuthal dependence of the surface acoustic wave velocity indicates a slightly different elastic behavior of the m ‐face sample that basically affects the c44 elastic constant. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
| Keywords: | InN Brillouin scattering surface acoustic waves elastic constants |