Trapping Long-Lifetime Excitons in a Two-Dimensional Harmonic Potential
arXiv:cond-mat/0410298 · doi:10.1016/j.ssc.2004.11.053
Abstract
We report an important step forward for the goal of unambiguous observation of Bose-Einstein condensation of excitons in semiconductors. We have demonstrated a system in which excitons live for microseconds, much longer than their thermalization time, move over distances of hundreds of microns, and can be trapped in a harmonic potential exactly analous to the traps for atomic condensates. We also report recent results of a new method for observing evidence of Bose-Einstein condensation, by angular resolution of the emitted luminescence.
Invited paper for International Conference on Spontaneous Coherence in Excitonic Systems, Seven Springs, PA, May 2004. To appear in Solid State Communications