Abstract
A series of zinc-blende CdTe quantum dots in glass was investigated
using Raman scattering and luminescence. The dot size was controlled by
varying the annealing conditions. Luminescence was employed as a probe
for quality of the sample and its adequacy for resonance. Resonant Raman
spectra at the lowest confined energy levels of the quantum dots were
obtained in function of the pressure in the range 1 bar to 4.6 GPa. The
upper limit was established by a phase transition probably to NaCl
structure, simultaneous with disappearance of Raman signal. In the
latter phase, first-order Raman scattering is forbidden. The Gruneisen
parameter for the LO phonon of CdTe quantum dots is given.
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