Observation of Forbidden Exciton Transitions Mediated by Coulomb Interactions in Photoexcited Semiconductor Quantum Wells

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dc.citation.firstpage137404en_US
dc.citation.journalTitlePhysical Review Lettersen_US
dc.citation.volumeNumber110en_US
dc.contributor.authorRice, W.D.en_US
dc.contributor.authorKono, J.en_US
dc.contributor.authorZybell, S.en_US
dc.contributor.authorWinnerl, S.en_US
dc.contributor.authorBhattacharyya, J.en_US
dc.contributor.authorSchneider, H.en_US
dc.contributor.authorHelm, M.en_US
dc.contributor.authorEwers, B.en_US
dc.contributor.authorChernikov, A.en_US
dc.contributor.authorKoch, M.en_US
dc.contributor.authorChatterjee, S.en_US
dc.contributor.authorKhitrova, G.en_US
dc.contributor.authorGibbs, H.M.en_US
dc.contributor.authorSchneebeli, L.en_US
dc.contributor.authorBreddermann, B.en_US
dc.contributor.authorKira, M.en_US
dc.contributor.authorKoch, S.W.en_US
dc.date.accessioned2013-04-03T16:27:15Z
dc.date.available2013-04-03T16:27:15Z
dc.date.issued2013en_US
dc.description.abstractWe use terahertz pulses to induce resonant transitions between the eigenstates of optically generated exciton populations in a high-quality semiconductor quantum well sample. Monitoring the excitonic photoluminescence, we observe transient quenching of the 1s exciton emission, which we attribute to the terahertz-induced 1s-to-2p excitation. Simultaneously, a pronounced enhancement of the 2s exciton emission is observed, despite the 1s-to-2s transition being dipole forbidden. A microscopic many-body theory explains the experimental observations as a Coulomb-scattering mixing of the 2s and 2p states, yielding an effective terahertz transition between the 1s and 2s populations.en_US
dc.embargo.termsnoneen_US
dc.identifier.citationRice, W.D., Kono, J., Zybell, S., et al.. "Observation of Forbidden Exciton Transitions Mediated by Coulomb Interactions in Photoexcited Semiconductor Quantum Wells." <i>Physical Review Letters,</i> 110, (2013) American Physical Society: 137404. http://dx.doi.org/10.1103/PhysRevLett.110.137404.
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevLett.110.137404en_US
dc.identifier.urihttps://hdl.handle.net/1911/70890
dc.language.isoengen_US
dc.publisherAmerican Physical Society
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.titleObservation of Forbidden Exciton Transitions Mediated by Coulomb Interactions in Photoexcited Semiconductor Quantum Wellsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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