Bose-Einstein Condensation of Excitons in Bilayer Electron Systems
Mesoscale and Nanoscale Physics
2009-11-10 v1
Abstract
An ordered state of electrons in solids in which excitons condense was proposed many years ago as a theoretical possibility but has, until recently, never been observed. We review recent studies of semiconductor bilayer systems that provide clear evidence for this phenomenon and explain why exciton condensation in the quantum Hall regime, where these experiments were performed, is as likely to occur in electron-electron bilayers as in electron-hole bilayers. In current quantum Hall exciton condensates, disorder induces mobile vortices that flow in response to a supercurrent and limit the extremely large bilayer counterflow conductivity.
Cite
@article{arxiv.cond-mat/0404113,
title = {Bose-Einstein Condensation of Excitons in Bilayer Electron Systems},
author = {J. P. Eisenstein and A. H. MacDonald},
journal= {arXiv preprint arXiv:cond-mat/0404113},
year = {2009}
}
Comments
19 pages including 4 figures