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Ruf, T. Cardona, M. Pavone, P. Pabst, M. Krisch, M. D'Astuto, M. Suski, T. Grzegory, I. Leszczynski, M. Serrano Gutiérrez, Jorge 2024-01-30T13:56:28Z 2024-01-30T13:56:28Z 2001 Phys. Rev. Lett. 86, 906 (2001) 0031-9007 https://uvadoc.uva.es/handle/10324/65361 10.1103/PhysRevLett.86.906 906 5 909 Physical Review Letters 86 1079-7114 We have investigated the lattice dynamics of a wurtzite GaN single crystal by inelastic x-ray scattering. Several dispersion branches and phonons at high-symmetry points have been measured, including the two zone-center Raman- and infrared-inactive silent modes. The experiments have been complemented by ab initio calculations. They are in very good agreement with our measurements, not only for phonon energies, but also for scattering intensities, thus validating the correctness of the eigenvectors. Other phenomenological and ab initio theories exhibit significant differences. eng info:eu-repo/semantics/openAccess Phonon Dispersion Curves in Wurtzite-Structure GaN Determined by Inelastic X-Ray Scattering info:eu-repo/semantics/article