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dc.contributor.authorNitsche, W.H.
dc.contributor.authorKim, N.Y.
dc.contributor.authorRoumpos, G.
dc.contributor.authorSchneider, C.
dc.contributor.authorKamp, M.
dc.contributor.authorHöfling, S.
dc.contributor.authorForchel, A.
dc.contributor.authorYamamoto, Y.
dc.identifier.citationNitsche , W H , Kim , N Y , Roumpos , G , Schneider , C , Kamp , M , Höfling , S , Forchel , A & Yamamoto , Y 2014 , ' Algebraic order and the Berezinskii-Kosterlitz-Thouless transition in an exciton-polariton gas ' , Physical Review. B, Condensed matter and materials physics , vol. 90 , no. 20 .
dc.identifier.otherPURE: 160062301
dc.identifier.otherPURE UUID: ac200aa2-5ed2-4dbd-b871-ac20795c8d45
dc.identifier.otherScopus: 84915820670
dc.identifier.otherWOS: 000345538900010
dc.descriptionThis research has been supported by the Japan Society for the Promotion of Science (JSPS) through its Funding Program for World-Leading Innovative Research and Development on Science and Technology (FIRST Program), by the U.S. Navy/SPAWAR Grant No. N66001-09-1-2024, and by the National Science Foundation Grant No. ECCS-09 25549. W.H.N. acknowledges the Gerhard Casper Stanford Graduate Fellowship.en
dc.description.abstractWe observe quasi-long-range coherence in a two-dimensional condensate of exciton-polaritons. Our measurements confirm that the spatial correlation algebraically decays with a slow power law, whose exponent quantitatively behaves as predicted by the Berezinskii-Kosterlitz-Thouless theory. The exciton-polaritons are created by nonresonant optical pumping of a microcavity sample with embedded GaAs quantum wells at liquid helium temperature. Michelson interference is used to measure the coherence of the photons emitted by decaying exciton-polaritons.
dc.relation.ispartofPhysical Review. B, Condensed matter and materials physicsen
dc.rightsPublished by the American Physical Society. This article is available under the terms of the Creative Commons Attribution 3.0 License ( Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.en
dc.subjectQC Physicsen
dc.titleAlgebraic order and the Berezinskii-Kosterlitz-Thouless transition in an exciton-polariton gasen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.description.statusPeer revieweden

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