Citation
D. Hagele et al., Cooling dynamics of excitons in GaN, PHYS REV B, 59(12), 1999, pp. R7797-R7800
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829
→ ACNP
Volume
59
Issue
12
Year of publication
1999
Pages
R7797 - R7800
Database
ISI
SICI code
0163-1829(19990315)59:12<R7797:CDOEIG>2.0.ZU;2-S
Abstract
The cooling of a photoexcited exciton distribution in wurtzite GaN is studi
ed by time-resolved photoluminescence measurements on the longitudinal opti
cal phonon replicas of the free exciton. The temperature of the excitons de
creases for low sample temperatures within 150 ps down to the lattice tempe
rature. We derive an explicit formula for the transient exciton temperature
in terms of cooling via deformation potential scattering with acoustic pho
nons. [S0163-1829(99)51112-0].