Indirect excitons in a potential energy landscape created by a perforated electrode

Abstract

We report on the principle and realization of an excitonic device: a ramp that directs the transport of indirect excitons down a potential energy gradient created by a perforated electrode at constant voltage. The device provides an experimental proof of principle for controlling exciton transport with electrode density gradients. We observed that the exciton transport distance along the ramp increases with increasing exciton density. This effect is explained in terms of disorder screening by repulsive exciton-exciton interactions.

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• Localization-Delocalization Transition of Indirect Excitons in Lateral Electrostatic Lattices
• Collection of indirect excitons in a diamond-shaped electrostatic trap
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• Anisotropic superfluidity of two-dimensional excitons in a periodic potential
• Spatially and time-resolved imaging of transport of indirect excitons in high magnetic fields
• Tunable strongly interacting dipolar excitons in hybrid perovskites