Electrostatic traps for dipolar excitons

Details Electrostatic traps for dipolar excitons Electrostatic traps for dipolar excitons

2005-04-07

arxiv.org/abs/cond-mat/0504178v2

Physics

Condensed Matter

Other Condensed Matter

5 pages, 3 figures. This 2nd version contains a revised Fig.3 + minor revisions to the discussion and abstract

Scientific paper

10.1103/PhysRevB.72.075428

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.

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