1999/06/23 by Rodolfo Del Sole, Del Sole, Rodolfo, Giovanni Onida +1
Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #cond-mat
paper · pdf · doi:10.48550/arxiv.cond-mat/9906346
10 figures. In press in Physical Review B, scheduled 15 Aug. 1999
arxiv created 1999/06/23 · arxiv updated 2009/11/30
We prove, by realistic microscopic calculations within the sp3s^* 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.