Free exciton optical absorption in direct gap semiconductor alloys |
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| Authors: | A.A Mbaye F Raymond C Vèrié |
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| Affiliation: | Laboratoire de Physique du Solide et Energie Solaire, CNRS Parc de Sophia-Antipolis, Rue Bernard Grégory, 06560 Valbonne, France |
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| Abstract: | Disorder effects on the optical absorption spectra of free excitons in direct semiconductor alloys are discussed as function of their Bohr radius. The variation of disorder-induced line broadening with alloy composition is described, with a particular emphasis on the violation of the Nordheim's rule for such spatially extended quasiparticles. |
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