Abstract

A new variant of the one-electron Green function method is suggested, which enables an appreciable simplification of the calculation of surface and chemisorption electronic states on selected boundary planes of crystals. By this method, the (111) and (1̄1̄1) planes were investigated of a semi-infinite diamond-like crystal. New Shockley surface states (Λ 3 type) were found and conclusions were obtained concerning the existence and number of surface states on ideal surfaces of both kinds. Qualitative results are mentioned briefly of calculation of chemisorption of atoms (assuming complete surface occupation) on the (111) plane of the crystal considered. An LGP-30 “pocket” electronic computer was used to carry out numerical calculations.

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