S. Cohen, J.C. Liu, et al.
MRS Spring Meeting 1999
Because of their long lifetime in coupled quantum wells under an applied electric field, excitons may he able to reach thermodynamic quasi-equilibrium. Here we measure photoluminescencc and photoluminescence excitation spectra from a symmetric coupled double quantum well. Analysis of the spectra shows that thermodynamic quasi-equilibrium is not achieved at temperatures below 6 K, where the excitons are trapped in a metastahle distribution. At higher temperatures, quasi-equilihrium is achieved. Because of strong repulsion between the excitons, the quasi-equilihrium distribution can he modeled with a Fermi-Dirac distribution. The model quantitatively explains the striking temperature dependence of the photoluminescence lincwidth which has been previously reported. © 1992.
S. Cohen, J.C. Liu, et al.
MRS Spring Meeting 1999
Sung Ho Kim, Oun-Ho Park, et al.
Small
D.D. Awschalom, J.-M. Halbout
Journal of Magnetism and Magnetic Materials
Corneliu Constantinescu
SPIE Optical Engineering + Applications 2009