Near-Field Magnetophotoluminescence Spectroscopy of Composition Fluctuations in InGaAsN
Identifieur interne : 00FA84 ( Main/Repository ); précédent : 00FA83; suivant : 00FA85Near-Field Magnetophotoluminescence Spectroscopy of Composition Fluctuations in InGaAsN
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Abstract
The localization of excitons on quantum-dot-like compositional fluctuations has been observed in temperature-dependent near-field magnetophotoluminescence spectra of InGaAsN. Localization is driven by the giant bowing parameter of these alloys and manifests itself by the appearance of ultranarrow lines (half-width <1 meV ) at temperatures below 70 K. We show how near-field optical scanning microscopy can be used for the estimation of the size, density, and nitrogen excess of individual compositional fluctuations (clusters), thus revealing random versus phase-separation effects in the distribution of nitrogen.
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Mintairov</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>EE Department, University of Notre Dame, Notre Dame, Indiana 46556</s1></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Indiana</region></placeName><wicri:cityArea>EE Department, University of Notre Dame, Notre Dame</wicri:cityArea></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Ioffe Physico-Technical Institute, RAS, 194021, St. Petersburg, Russia</s1></inist:fA14><country xml:lang="fr">Russie</country><wicri:regionArea>Ioffe Physico-Technical Institute, RAS, 194021, St. Petersburg</wicri:regionArea><wicri:noRegion>St. Petersburg</wicri:noRegion></affiliation><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Argonne National Laboratory, Argonne, Illinois 60439</s1></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Illinois</region></placeName><wicri:cityArea>Argonne National Laboratory, Argonne</wicri:cityArea></affiliation></author><author><name sortKey="Kosel, T H" uniqKey="Kosel T">T. H. Kosel</name></author><author><name sortKey="Merz, J L" uniqKey="Merz J">J. L. Merz</name></author><author><name sortKey="Blagnov, P A" uniqKey="Blagnov P">P. A. Blagnov</name></author><author><name sortKey="Vlasov, A S" uniqKey="Vlasov A">A. S. Vlasov</name></author><author><name sortKey="Ustinov, V M" uniqKey="Ustinov V">V. M. Ustinov</name></author><author><name sortKey="Cook, R E" uniqKey="Cook R">R. E. 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Localization is driven by the giant bowing parameter of these alloys and manifests itself by the appearance of ultranarrow lines (half-width <1 meV ) at temperatures below 70 K. We show how near-field optical scanning microscopy can be used for the estimation of the size, density, and nitrogen excess of individual compositional fluctuations (clusters), thus revealing random versus phase-separation effects in the distribution of nitrogen.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0031-9007</s0></fA01><fA02 i1="01"><s0>PRLTAO</s0></fA02><fA03 i2="1"><s0>Phys. rev. lett.</s0></fA03><fA05><s2>87</s2></fA05><fA06><s2>27</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Near-Field Magnetophotoluminescence Spectroscopy of Composition Fluctuations in InGaAsN</s1></fA08><fA11 i1="01" i2="1"><s1>MINTAIROV (A. M.)</s1></fA11><fA11 i1="02" i2="1"><s1>KOSEL (T. H.)</s1></fA11><fA11 i1="03" i2="1"><s1>MERZ (J. L.)</s1></fA11><fA11 i1="04" i2="1"><s1>BLAGNOV (P. 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