Trapping Long-Lifetime Excitons in a Two-Dimensional Harmonic Potential

Details Trapping Long-Lifetime Excitons in a Two-Dimensional Harmonic Potential Trapping Long-Lifetime Excitons in a Two-Dimensional Harmonic Potential

2004-10-12

arxiv.org/abs/cond-mat/0410298v1

Physics

Condensed Matter

Strongly Correlated Electrons

Invited paper for International Conference on Spontaneous Coherence in Excitonic Systems, Seven Springs, PA, May 2004. To appe

Scientific paper

10.1016/j.ssc.2004.11.053

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.

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