A novel method to experimentally study the dynamics of long-living excitons in coupled quantum well semiconductor heterostructures is presented. Lithographically defined top gate electrodes imprint in-plane artificial potential landscapes for excitons via the quantum confined Stark effect. Excitons are shuttled laterally in a time-dependent potential landscape defined by an interdigitated gate structure. Long-range drift exceeding a distance of 150 um at an exciton drift velocity > 1000 m/s is observed in a gradient potential formed by a resistive gate stripe.
@article{arxiv.cond-mat/0509142,
title = {Dynamics of Long-Living Excitons in Tunable Potential Landscapes},
author = {Andreas Gartner and Dieter Schuh and Jorg P. Kotthaus},
journal= {arXiv preprint arXiv:cond-mat/0509142},
year = {2015}
}
Comments
4 pages, 4 figures. To appear in Phys. E (MSS-12-Proceedings)