Silent Raman modes in zinc oxide and related nitrides
F. J. ManjónDepartament de Física Aplicada, Universitat Politècnica de València , Escuela Técnica Superior de Ingeniería del Diseño (ETSID), ES-46012 València, SpainBernard MariDepartament de Física Aplicada, Universitat Politècnica de València , Escuela Técnica Superior de Ingeniería del Diseño (ETSID), ES-46012 València, SpainJ. SerranoLaboratoire des Solides Irradies , Unite Mixte de Recherche (UMR) 7642 Centre National de la Recherche Scientifique (CNRS), Ecole Polytechnique, F-91128 Palaiseau, FranceA. RomeroAdvanced Materials Department , IPICyT, Camino a la presa San José 2055, 78216 San Luis Potosí, Mexico
2005en
ABI
Annotatsiya
Anomalous Raman modes have been reported in several recent papers dealing with doped- and undoped-ZnO layers grown by different methods. Most of these anomalous Raman modes have been attributed to local vibrational modes of impurities or defects. However, we will show that most of the observed modes correspond to wurtzite-ZnO silent modes allowed by the breakdown of the translational crystal symmetry induced by defects and impurities.
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