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dc.contributor.authorAmthor, M.
dc.contributor.authorLiew, T.C.H.
dc.contributor.authorMetzger, C.
dc.contributor.authorBrodbeck, S.
dc.contributor.authorWorschech, L.
dc.contributor.authorKamp, M.
dc.contributor.authorShelykh, I.A.
dc.contributor.authorKavokin, A.V.
dc.contributor.authorSchneider, C.
dc.contributor.authorHöfling, S.
dc.identifier.citationAmthor , M , Liew , T C H , Metzger , C , Brodbeck , S , Worschech , L , Kamp , M , Shelykh , I A , Kavokin , A V , Schneider , C & Höfling , S 2015 , ' Optical bistability in electrically driven polariton condensates ' , Physical Review. B, Condensed matter and materials physics , vol. 91 , no. 8 .
dc.identifier.otherPURE: 172308294
dc.identifier.otherPURE UUID: fea97fa2-ee21-46d9-9112-515263ac5f77
dc.identifier.otherScopus: 84923233241
dc.identifier.otherWOS: 000350253400003
dc.descriptionThe authors would like to thank the State of Bavaria for financial support. I.A.S. acknowledges the support of FP7 IRSES project POLAPHEN. S.H. gratefully acknowledges support by the Royal Society and the Wolfson Foundation. A.V.K. acknowledges financial support from the Ministry of Education and Science of the Russian Federation (Contract No. 11.G34.31.0067 with SPbSU), and EU projects POLAPHEN, SPANGL4Q, and LIMACONA.en
dc.description.abstractWe observe a bistability in an electrically driven polariton condensate, which is manifested by a memory dependent threshold characteristic. In contrast to the polariton bistabilities previously observed in resonantly optically pumped microcavities, our effect occurs under nonresonant electric pumping and is triggered by the current injection scheme. We explain the origin of the bistability by a dependence of the electron-hole tunneling lifetime on the carrier density in the embedded quantum wells. The field screening effect creates a positive feedback loop, which yields the bistable behavior of the condensate. We develop a rate-equation-based model which qualitatively explains the occurrence of the hysteresis under current injection, its reduction with increased magnetic field, and the absence of bistability under optical pumping.
dc.relation.ispartofPhysical Review. B, Condensed matter and materials physicsen
dc.rights©2015 American Physical Society. Reproduced in accordance with the APS transfer of copyright agreement.en
dc.subjectQC Physicsen
dc.titleOptical bistability in electrically driven polariton condensatesen
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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