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In the literature, there are controversies on the interpretation of the appearance in InN Raman spectra of a strong scattering peak in the energy region of the unscreened longitudinal optical (LO) phonons, although a shift caused by the phonon–plasmon interaction is expected for the high conductance observed in this material. Most measurements on light scattering are performed on ensembles of InN nanowires (NWs). However, it is important to investigate the behavior of individual nanowires and here we report on micro-Raman measurements on single nanowires. When changing the polarization direction of the incident light from parallel to perpendicular to the wire, the expected reduction of the Raman scattering was observed for transversal optical (TO) and E 2 phonon scattering modes, while a strong symmetry-forbidden LO mode was observed independently on the laser polarization direction. Single Mg-and …
IOP Publishing
Publication date: 
15 Jul 2010

EO Schäfer-Nolte, T Stoica, T Gotschke, FA Limbach, E Sutter, P Sutter, D Grützmacher, R Calarco

Biblio References: 
Volume: 21 Issue: 31 Pages: 315702