Comment on 'Theory of incomplete crystals and crystalline interfaces' by F. Garcia-Moliner and V.R. Velasco.

Lambrecht W.R.L.

The relation between the discrete surface Green's function matching approach of Garcia-Moliner and Velasco (Physica Scripta 34, 257 (1986)) and atom-removal or ideal construction approaches is clarified. Both approaches are shown to give identical results for an 'ideal' surface in the tight-binding approximation. Here 'ideal' is defined by the condition that the Hamiltonian matrix elements in the crystal fragment keep their bulk values.

Physica Scripta, 35 724-5, 1987.

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