We report on the study of indirect excitons in moving lattices - conveyers created by a set of AC voltages applied to the electrodes on the sample surface. The wavelength of this moving lattice is set by the electrode periodicity, the amplitude is controlled by the applied voltage, and the velocity is controlled by the AC frequency. We observed the dynamical localization-delocalization transition for excitons in the conveyers and measured its dependence on the exciton density and conveyer amplitude and velocity. We considered a model for exciton transport via conveyers. The theoretical simulations are in agreement with the experimental data.
@article{arxiv.1102.5329,
title = {Electrostatic Conveyer for Excitons},
author = {A. G. Winbow and J. R. Leonard and M. Remeika and Y. Y. Kuznetsova and A. A. High and A. T. Hammack and L. V. Butov and J. Wilkes and A. A. Guenther and A. L. Ivanov and M. Hanson and A. C. Gossard},
journal= {arXiv preprint arXiv:1102.5329},
year = {2012}
}
Comments
4 pages, 4 figures + supplemental material including two videos