A simple method for calculating the electronic structure of metal surfaces is presented and applied to Na (001). The ionic lattice is treated as a pseudopotential perturbation on a jellium slab. The self-consistent linear response to the pseudolattice perturbation is treated with a model dielectric function of an electron gas bounded by an infinite potential barrier. Exchange and correlation effects are included in the local density approximation. The results are in semiquantitative agreement with previous non-linear calculations for Na (001).
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Lert et al. (1978) studied this question.
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