RELAXATION OF EXCITONS IN CORRUGATED GAAS ALAS SUPERLATTICES/

Authors
JIANG DS ZHOU XQ OESTREICH M RUHLE WW NOTZEL R PLOOG K
Citation
Ds. Jiang et al., RELAXATION OF EXCITONS IN CORRUGATED GAAS ALAS SUPERLATTICES/, Physical review. B, Condensed matter, 49(15), 1994, pp. 10786-10789
Citations number
19
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
49
Issue
15
Year of publication
1994
Pages
10786 - 10789
Database
ISI
SICI code
0163-1829(1994)49:15<10786:ROEICG>2.0.ZU;2-C
Abstract
We report time-resolved spectroscopy on exciton luminescence in low-di mensional systems. The reduction of dimensionality from two in quantum wells to one in corrugated superlattices can completely change the in itial relaxation process. In the one-dimensional system exciton-phonon scattering is, even at high exciton densities, faster than exciton-ex citon scattering since the latter is reduced whereas the former is enh anced if the final state falls into the singularity in the density of one-dimensional states.