Abstract
We investigate the homogeneous linewidth of localized type-I excitons in type-II GaAs/AlAs superlattices. These localizing centers represent the intermediate case between quasi-two-dimensional and quasi-zero-dimensional confinements. The temperature dependence of the homogeneous linewidth is gained with high precision from micro-photoluminescence spectra. We confirm the reduced exciton-acoustic-phonon interaction with decreasing dimensionality. An enhancement of the average exciton-LO-phonon interaction by localization is found in our sample. But this interaction is very sensitive to the detailed structure of the localizing centers.
| Original language | English |
|---|---|
| Pages (from-to) | 693-697 |
| Number of pages | 5 |
| Journal | Physica Status Solidi (A) Applied Research |
| Volume | 190 |
| Issue number | 3 |
| DOIs | |
| State | Published - Apr 2002 |
| Event | 7th International Conference on Optics and Excitons in Confined Systems (OECS7) - Montpellier, France Duration: 3 Sep 2001 → 7 Sep 2001 |
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