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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.

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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.

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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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Department of Energy (DOE)UNSPECIFIED
Issue or Number:7018
Record Number:CaltechAUTHORS:20150401-102532343
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56278
Deposited By: Tony Diaz
Deposited On:01 Apr 2015 19:42
Last Modified:10 Nov 2021 20:57

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