Propagation of exciton pulses in semiconductors
Niels Bohr Institute - Blegdamsvej 17, DK-2100 Copenhagen Ø,
2 Mathematical Physics, Lund Institute of Technology P.O. Box 118, S-22100 Lund, Sweden
Accepted: 28 June 2002
Using a toy model, we examine the propagation of excitons in Cu2O, which form localized pulses under certain experimental conditions. The formation of these waves is attributed to the effect of dispersion, non-linearity and the coupling of the excitons to phonons, which acts as a dissipative mechanism.
PACS: 05.45.-a – Nonlinear dynamics and nonlinear dynamical systems / 71.35.-y – Excitons and related phenomena / 63.20.Ls – Phonon intractions with other quasiparticles
© EDP Sciences, 2002