J. Phys. I France
Volume 7, Numéro 11, November 1997
Page(s) 1431 - 1443
DOI: 10.1051/jp1:1997139
J. Phys. I France 7 (1997) 1431-1443

Electron-LO-Phonon Quantum Kinetics in quantum Dots

K. Král and Z. Khás

Institute of Physics, Academy of Sciences of Czech Republic, Na Slovance 2, 180 40 Prague 8, Czech Republic

(Received 10 March 1997, revised 20 May 1997, accepted 15 July 1997)

Quantum kinetic equations are solved numerically for the process of the relaxation of an excited electronic system in a cubic quantum dot in a GaAs/Al xGa 1-xAs structure with the electron-LO-phonon interaction included and with the carrier-carrier interaction neglected. The theory is developed within the equation of motion method for the reduced density matrices. It is shown that near the low electron and hole density limit a relatively broad interval of the dot lateral size may exist in which the relaxation of the electrons may develop at a picosecond time scale.

© Les Editions de Physique 1997