Enhanced resonant backscattering of excitons in disordered quantum wells.

@article{Langbein2002EnhancedRB,
  title={Enhanced resonant backscattering of excitons in disordered quantum wells.},
  author={Wolfgang Langbein and Erich Runge and Vincenzo Savona and Roland Zimmermann},
  journal={Physical review letters},
  year={2002},
  volume={89 15},
  pages={157401}
}
A clear signature of enhanced backscattering of excitons is observed in the directional resonant Rayleigh scattering of light from localized two-dimensional excitons in disordered quantum wells. Its spectral dependence and time dynamics are measured and theoretically predicted in a quantitative way. The intensity enhancement has a large momentum span extending beyond the external light emission cone. This is a consequence of the small localization length of the exciton as a massive particle… CONTINUE READING