Many-body effects in wide parabolic AlGaAs quantum wells

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T15:28:50Z
dc.date.accessioned2022-10-05T16:51:05Z
dc.date.available2014-05-20T15:28:50Z
dc.date.available2022-10-05T16:51:05Z
dc.date.created2014-05-20T15:28:50Z
dc.date.issued2007-11-01
dc.identifierJournal of Applied Physics. Melville: Amer Inst Physics, v. 102, n. 9, 5 p., 2007.
dc.identifier0021-8979
dc.identifierhttp://hdl.handle.net/11449/38569
dc.identifier10.1063/1.2809418
dc.identifierWOS:000250983700050
dc.identifierWOS000250983700050.pdf
dc.identifier9354064620643611
dc.identifier6977466698742311
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3909879
dc.description.abstractPhotoluminescence measurements at different temperatures have been performed to investigate the optical response of a two-dimensional electron gas in n-type wide parabolic quantum wells. A series of samples with different well widths in the range of 1000-3000 A was analyzed. Many-body effects, usually observed in the recombination process of a two-dimensional electron gas, appear as a strong enhancement in the photoluminescence spectra at the Fermi level at low temperature only in the thinnest parabolic quantum wells. The suppression of the many-body effect in the thicker quantum wells was attributed to the decrease of the overlap between the wavefunctions of the photocreated holes and the two-dimensional electrons belonging to the highest occupied electron subband. (C) 2007 American Institute of Physics.
dc.languageeng
dc.publisherAmerican Institute of Physics (AIP)
dc.relationJournal of Applied Physics
dc.relation2.176
dc.relation0,739
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.titleMany-body effects in wide parabolic AlGaAs quantum wells
dc.typeArtigo


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