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dc.contributor.authorVenkateswaran, Uma Devieng
dc.contributor.authorChandrasekhar, Meeraeng
dc.contributor.authorChandrasekhar, Holalkere R.eng
dc.contributor.authorWolfram, T.eng
dc.contributor.authorFischer, R.eng
dc.contributor.authorMasselink, W. T.eng
dc.contributor.authorMorkoç, H.eng
dc.date.issued1985-03eng
dc.descriptionURL:http://link.aps.org/doi/10.1103/PhysRevB.31.4106 DOI:10.1103/PhysRevB.31.4106eng
dc.description.abstractThe pressure dependence (0-70 kbar) of the photoluminescence spectra from a GaAs-Ga1-xAlxAs multiple-quantum-well (MQW) structure is reported at 8-300 K. The pressure coefficients of the EnhΓ and EnlΓ (n=1, 2) transitions between the Γ conduction subbands and the heavy- (h) and light- (l) hole bands are determined. The energy of E1hΓ has a sublinear pressure dependence for the MQW at 80 K but not at 300 K. The reverse is true for the band gap of bulk GaAs. In the MQW the Γ and X bands cross around 35 kbar and a new transition E1hX, observed for the first time, has a pressure coefficient of -1.3±0.1 meV/kbar at 80 K. The X-Γ band separation at atmospheric pressure in the bulk is deduced to be 45-50 meV lower than the previously accepted value of 0.464 eV. The carrier lifetimes in the Γ and X bands and the Γ-to-X scattering times are deduced.eng
dc.description.sponsorshipThe work at the University of Missouri was supported by the Standar Oil Company (Indiana). M.C. also thanks the Research Council of the University of Missouri. The work at the University of Illinois was funded by the Air Force Office of Scientific Research.eng
dc.identifier.citationPhys. Rev. B 31, 4106-4109 (1985)eng
dc.identifier.issn1098-0121eng
dc.identifier.urihttp://hdl.handle.net/10355/8184eng
dc.publisherAmerican Physical Societyeng
dc.relation.ispartofPhysics and Astronomy publicationseng
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. College of Arts and Sciences. Department of Physics and Astronomyeng
dc.source.harvestedAmerican Physical Societyeng
dc.subjectphotoacoustic effectseng
dc.subjectpiezo-, elasto-, and acoustooptical effectseng
dc.subject.lcshOptoacoustic spectroscopyeng
dc.titlePhotoluminescence studies of a GaAs-Ga1-xAlxAs superlattice at 8-300 K under hydrostatic pressure (0-70 kbar)eng
dc.typeArticleeng


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