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Bose-Einstein condensation of excitons in bilayer electron systems

Eisenstein, J. P. and MacDonald, A. H. (2004) Bose-Einstein condensation of excitons in bilayer electron systems. Nature, 432 (7018). pp. 691-694. ISSN 0028-0836. doi:10.1038/nature03081. https://resolver.caltech.edu/CaltechAUTHORS:20150401-102532343

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Abstract

An exciton is the particle-like entity that forms when an electron is bound to a positively charged 'hole'. An ordered electronic state in which excitons condense into a single quantum state was proposed as a theoretical possibility many years ago. 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 excitonic condensates, disorder induces mobile vortices that flow in response to a supercurrent and limit the extremely large bilayer counterflow conductivity.


Item Type:Article
Related URLs:
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https://doi.org/10.1038/nature03081 DOIArticle
http://rdcu.be/cr4yPublisherFree ReadCube access
https://arxiv.org/abs/cond-mat/0404113arXivDiscussion Paper
ORCID:
AuthorORCID
MacDonald, A. H.0000-0003-3561-3379
Additional Information:© 2004 Nature Publishing Group. Received 1 April 2004; Accepted 5 October 2004. This research was supported by the National Science Foundation (J.P.E. and A.H.M.) and the Department of Energy (J.P.E.). We thank A. Burkov, Y. Joglekar, M. Kellogg, L. Pfeiffer, E. Rossi, I. Spielman and K. West for their essential help in this research.
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Funding AgencyGrant Number
NSFUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Issue or Number:7018
DOI:10.1038/nature03081
Record Number:CaltechAUTHORS:20150401-102532343
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150401-102532343
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56278
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:01 Apr 2015 19:42
Last Modified:10 Nov 2021 20:57

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