Optical signatures of thiolate/Cu(110) and S/Cu(110) surface structures
作者： D. S. Martin , P. D. Lane , G. E. Isted , R. J. Cole , N. P. Blanchard
DOI: 10.1103/PHYSREVB.82.075428
关键词: Overlayer 、 Substrate (electronics) 、 Reflection (mathematics) 、 Molecular physics 、 Materials science 、 Chemisorption 、 Anisotropy 、 Spectroscopy 、 Isotropy 、 Adsorption
摘要: The optical properties of thiolate/Cu(110) and S/Cu(110) surfaces created by the adsorption methanethiol L-cysteine are investigated using reflection anisotropy spectroscopy (RAS). We find that characteristic signatures obtained from these systems. experimental RAS profiles simulated a four-phase model consisting vacuum, anisotropic overlayer, surface, isotropic substrate. results simulations suggest broad transition at 3.8 eV is associated with interface, consistent recent first-principles calculations [S. D'Agostino et al., Phys. Rev. B 75, 195444 (2007)].
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