Abstract
The adsorption properties of Au on β-SiC(111) surfaces are studied using the charge self-consistent extended Hückel theory. The intermixing between Au atom and β-SiC could happen only on the Si-terminated (111) surface. In the case of Si-terminated, there is a intrinsic surface state in the energy gap, and the Fermi energy is pinned at this surface state. But in the case of C-terminated, the surface state exists near the top of the valence band.
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