Surface versus crystal-termination effects in the optical properties of surfaces

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We prove, by realistic microscopic calculations within the sp^3s^* Tight Binding method for GaAs (110) and (100), that the surface optical properties are not influenced by long-range crystal termination effects, and hence that they can be consistently studied considering slabs of limited thickness (20 - 30 Å). The origin of derivative-like and bulk-like lineshapes in Reflection Anisotropy Spectra is also discussed, analyzing the effects arising from possible surface-induced reduction, broadening, and shifting of the bulk spectrum near the surface.
10 figures. In press in Physical Review B, scheduled 15 Aug. 1999

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Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/29416

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9906346
 http://arxiv.org/abs/cond-mat/9906346

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arXiv