Atomic ordering and bond relaxation in optical spectra of self-organized InP/GaInP2 Wigner molecule structures

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dc.contributor.authorMintairov, A. M.
dc.contributor.authorLebedev, D. V.
dc.contributor.authorBert, N.
dc.contributor.authorBelyaev, K. G.
dc.contributor.authorNevedomskiy, V. N.
dc.contributor.authorRakhlin, M. V.
dc.contributor.authorToropov, A. A.
dc.contributor.authorVlasov, A. S.
dc.contributor.authorGocalińska, Agnieszka M.
dc.contributor.authorJuska, Gediminas
dc.contributor.authorPelucchi, Emanuele
dc.contributor.authorArredondo, M. A.
dc.contributor.authorNaden, A. B.
dc.contributor.authorShelaev, A. V.
dc.contributor.authorBykov, V. A.
dc.contributor.funderРоссийский Фонд Фундаментальных Исследований (РФФИ)en
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderNorthern Ireland Department for the Economyen
dc.contributor.funderEngineering and Physical Sciences Research Councilen
dc.contributor.funderRussian Science Foundationen
dc.date.accessioned2019-12-09T12:13:35Z
dc.date.available2019-12-09T12:13:35Z
dc.date.issued2019-11-12
dc.description.abstractWe used transmission electron microscopy, Raman, and photoluminescence spectroscopy to identify the effect of CuPt-type GaP-InP atomic ordering (AO) on the structural and emission properties of self-organized (SO) InP/GaInP2 Wigner molecule (WM) quantum dot (QD) structures. We found that the correlation of AO and SO growth results in the formation of InP/GaInP2 QD/AO-domain (QD/AOD) core-shell composites. This observation shows that intrinsic WMs in this system emerge due to a strong piezoelectric field generated by AODs, which induces QD doping and a built-in magnetic field. We found that the bond relaxation of AODs leads to a decrease in the emission energy of WMs of 80 meV. The photoluminescence spectra of single WMs having an emission energy ∼1.53 eV are presented here, the lowest one reported for this system.en
dc.description.sponsorshipRussian Science Foundation (Grant No. 19-19-00246); Russian Foundation for Basic Research (Project No. 18-02-01212); Science Foundation Ireland (Grant Nos. 15/IA/2864. 12/RC/2276-P2, and 18/US/3512); Northern Ireland Department for the Economy (Grant No. USI-140)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid202104en
dc.identifier.citationMintairov, A. M., Lebedev, D. V., Bert, N., Belyaev, K. G., Nevedomskiy, V. N., Rakhlin, M. V., Toropov, A. A., Vlasov, A. S., Gocalinska, A., Juska, G., Pelucchi, E., Arredondo, M. A., Naden, A. B., Shelaev, A. V. and Bykov, V. A. (2019) 'Atomic ordering and bond relaxation in optical spectra of self-organized InP/GaInP2 Wigner molecule structures', Applied Physics Letters, 115(20), 202104. (6pp.) doi: 10.1063/1.5126527en
dc.identifier.doi10.1063/1.5126527en
dc.identifier.eissn1077-3118
dc.identifier.endpage6en
dc.identifier.issn0003-6951
dc.identifier.issued20en
dc.identifier.journaltitleApplied Physics Lettersen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/9363
dc.identifier.volume115en
dc.language.isoenen
dc.publisherAmerican Institute of Physics Inc.en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2276/IE/I-PIC Irish Photonic Integration Research Centre/en
dc.relation.projectinfo:eu-repo/grantAgreement/RCUK/EPSRC/EP/R023751/1/GB/Electron Microscopy for the Characterisation and Manipulation of Advanced Functional Materials and their Interfaces at the Nanoscale/en
dc.rights©2019 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http:// creativecommons.org/licenses/by/4.0/en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectAtomic orderingen
dc.subjectBond relaxationen
dc.subjectOptical spectraen
dc.subjectInP/GaInP2en
dc.subjectWigner molecule structuresen
dc.titleAtomic ordering and bond relaxation in optical spectra of self-organized InP/GaInP2 Wigner molecule structuresen
dc.typeArticle (peer-reviewed)en
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