We consider the design of two-dimensional electrostatic traps for dipolar indirect excitons. We show that the excitons dipole-dipole interaction, combined with the in-plane electric fields that arise due to the trap geometry, constrain the maximal density and lifetime of trapped excitons. We derive an analytic estimate of these values and determine their dependence on the trap geometry, thus suggesting the optimal design for high density trapping as a route for observing excitonic Bose-Einstein condensation.
@article{arxiv.cond-mat/0504178,
title = {Electrostatic traps for dipolar excitons},
author = {Ronen Rapaport and Gang Chen and Steve Simon and Oleg Mitrofanov and Loren Pfeiffer and P. M. Platzman},
journal= {arXiv preprint arXiv:cond-mat/0504178},
year = {2009}
}
Comments
5 pages, 3 figures. This 2nd version contains a revised Fig.3 + minor revisions to the discussion and abstract