Confined optical phonon modes in polar tetrapod nanocrystals detected by resonant inelastic light scattering

Details Confined optical phonon modes in polar tetrapod nanocrystals detected by resonant inelastic light scattering Confined optical phonon modes in polar tetrapod nanocrystals detected by resonant inelastic light scattering

2005-12-21

arxiv.org/abs/cond-mat/0512541v1

Nano Lett.; (Letter); 2006; 6(3); 478-482.

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 4 figures

Scientific paper

10.1021/nl0524492

We investigated CdTe nanocrystal tetrapods of different sizes by resonant inelastic light scattering at room temperature and under cryogenic conditions. We observe a strongly resonant behavior of the phonon scattering with the excitonic structure of the tetrapods. Under resonant conditions we detect a set of phonon modes that can be understood as confined longitudinal-optical phonons, surface-optical phonons, and transverse-optical phonons in a nanowire picture.

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