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

Rodolfo Del Sole·Giovanni Onida
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Abstract

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.

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Rodolfo Del Sole, Giovanni Onida. 1999-06-23. Surface versus crystal-termination effects in the optical properties of surfaces. https://arxiv.org/abs/cond-mat/9906346

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