Abstract
The LO phonon resonant Raman scattering is studied in GaAs/Al0.32Ga0.68As Bragg confining structures and in a similar (reference) superlattice. Strong resonances, with a large outgoing/incoming beam intensity ratio, are observed in the spectral range of the (eB:hhB) Bragg confined excitons as well as in the (e1:hh1) exciton band. The resonance profiles are analyzed in terms of a model of exciton scattering by interface and alloy potential fluctuations. The Bragg confined 1S excitons are found to be virtually two dimensional, while those of the superlattice are intermediate between two and three dimensions.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 420-423 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 71 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1993 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy