Abstract
The temperature dependence of the width of the zero-phonon emission line in self-assembled quantum dots has been studied for . In single dot experiments on laterally patterned samples we find a linear increase of with , with a slope that systematically increases with decreasing size of the mesa structure. This result is to be contrasted with the absence of such a dependence in four-wave mixing on unpatterned samples. The features are shown to be consistent with a theory in which the excitons interact with phonons whose linewidths are given by scattering at surfaces due to patterning.
- Received 25 June 2004
DOI:https://doi.org/10.1103/PhysRevB.70.201301
©2004 American Physical Society