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Strain effects on the surface optical transitions of GaAs

AuthorsPostigo, Pablo Aitor ; Armelles Reig, Gaspar ; Briones Fernández-Pola, Fernando
KeywordsSurface optical properties
Issue Date15-Oct-1998
PublisherAmerican Physical Society
CitationPhysical Review B 58(15) : 9653-9661 (1998)
AbstractThe surface optical properties of GaAs on GaP-strained layers have been analyzed in situ by chemical modulation spectroscopy. A clear surface-related optical transition has been identified, and the effect of strain on this transition has been studied, showing a blueshift of 30 meV even for epitaxies as thin as 1 ML of GaAs deposited on top of GaP. This small shift is consistent with a transition between dimer states and dangling-bond states of the Ga-Ga dimers.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.58.9659
Appears in Collections:(IMN-CNM) Artículos
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