Applied Physics Letters · 2003 · 63 citations · 20 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsElectronic MaterialsSemiconductor MaterialsAtomic ExcitationElectronic Band StructureSemiconductor PhysicsStrongly Correlated Electron SystemsEffective MassElectron LocalizationExciton LocalizationExciton PhysicsExcitonsLocalization EffectsQuantum Wave Function
The electron effective mass, me, and extent of exciton wave function, rexc, were derived in GaAs1−yNy (y=0.043%–0.5%) from magnetophotoluminescence measurements. With an increase in nitrogen concentration, we find that me and rexc undergo a rapid increase and squeezing, respectively, even for y≈0.1%. This quite early manifestation of nitrogen-induced localization effects imposes important constraints on existing theoretical models.
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