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Manifestation of near-surface localized excitons in spectra of diffuse reflection of light

Physics of the Solid State, ISSN: 1063-7834, Vol: 40, Issue: 5, Page: 796-797
1998
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Article Description

The interaction of excitons with rough surfaces and its effect on light scattering spectra were investigated theoretically. We have employed a model for the excitonic surface potential based upon the generalized Morse potential, taking into account its random fluctuations produced by the surface roughness. Applying first-order perturbation theory, we calculate the cross section of light scattering from a rough GaAs surface and analyze its frequency dependence in the presence of an extrinsic surface-potential well with excitonic bound states. © 1998 American Institute of Physics.

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