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dc.contributor.authorHorikiri, Tomoyuki
dc.contributor.authorYamaguchi, Makoto
dc.contributor.authorKamide, Kenji
dc.contributor.authorMatsuo, Yasuhiro
dc.contributor.authorByrnes, Tim
dc.contributor.authorIshida, Natsuko
dc.contributor.authorLöffler, Andreas
dc.contributor.authorHoefling, Sven
dc.contributor.authorShikano, Yutaka
dc.contributor.authorOgawa, Tetsuo
dc.contributor.authorForchel, Alfred
dc.contributor.authorYamamoto, Yoshihisa
dc.identifier.citationHorikiri , T , Yamaguchi , M , Kamide , K , Matsuo , Y , Byrnes , T , Ishida , N , Löffler , A , Hoefling , S , Shikano , Y , Ogawa , T , Forchel , A & Yamamoto , Y 2016 , ' High-energy side-peak emission of exciton-polariton condensates in high density regime ' , Scientific Reports , vol. 6 , 25655 .
dc.identifier.otherPURE: 241920426
dc.identifier.otherPURE UUID: c39fa970-2ee5-475e-b2e5-842fd7cb7448
dc.identifier.otherScopus: 84969972465
dc.identifier.otherWOS: 000376372200001
dc.description.abstractIn a standard semiconductor laser, electrons and holes recombine via stimulated emission to emit coherent light, in a process that is far from thermal equilibrium. Exciton-polariton condensates -- sharing the same basic device structure as a semiconductor laser, consisting of quantum wells coupled to a microcavity -- have been investigated primarily at densities far below the Mott density for signatures of Bose-Einstein condensation. At high densities approaching the Mott density, exciton-polariton condensates are generally thought to revert to a standard semiconductor laser, with the loss of strong coupling. Here, we report the observation of a photoluminescence sideband at high densities that cannot be accounted for by conventional semiconductor lasing. This also differs from an upper-polariton peak by the observation of the excitation power dependence in the peak-energy separation. Our interpretation as a persistent coherent electron-hole-photon coupling captures several features of this sideband, although a complete understanding of the experimental data is lacking. A full understanding of the observations should lead to a development in non-equilibrium many-body physics.
dc.relation.ispartofScientific Reportsen
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.titleHigh-energy side-peak emission of exciton-polariton condensates in high density regimeen
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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