Relaxation of excitons in corrugated GaAs/AlAs superlattices
- 15 April 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 49 (15) , 10786-10789
- https://doi.org/10.1103/physrevb.49.10786
Abstract
We report time-resolved spectroscopy on exciton luminescence in low-dimensional systems. The reduction of dimensionality from two in quantum wells to one in corrugated superlattices can completely change the initial relaxation process. In the one-dimensional system exciton-phonon scattering is, even at high exciton densities, faster than exciton-exciton scattering since the latter is reduced whereas the former is enhanced if the final state falls into the singularity in the density of one-dimensional states.Keywords
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