Bilayer quantum Hall systems at \nu =1 support an excitonic ground state. In addition to the usual charged quasiparticles, this system possesses a condensate degree of freedom: exciton transport. Detection of this neutral transport mode is facilitated by the use of the Corbino multiply-connected geometry in which charge transport is suppressed. We here summarize our recent experiments on Corbino devices which directly demonstrate exciton transport across the bulk of the incompressible \nu =1 quantum Hall state.
@article{arxiv.1209.6095,
title = {Exciton Transport in a Bilayer Quantum Hall Superfluid},
author = {J. P. Eisenstein and A. D. K. Finck and D. Nandi and L. N. Pfeiffer and K. W. West},
journal= {arXiv preprint arXiv:1209.6095},
year = {2015}
}
Comments
5 pages, 2 figures. Contribution to the Proceedings of the 20th International Conference on High Magnetic Fields in Semiconductor Physics, Chamonix, 2012