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Publication
Surface Science
Paper
Breakdown of atomic superposition for the helium scattering potential of c(2×2) oxygen on nickel (001)
Abstract
Self-consistent calculations of the charge density of the c(2×2) phase of oxygen on nickel (001) (i) give a helium scattering potential which in excellent agreement with the shape, height and width of that obtained by Rieder by fitting his atom-surface scattering data: (ii) justify th use of a hard-wall fit because of a 4.2 Å-1 averrage softness parameter; and (iii) rule out superposition of atomic or ionic charge densities for this and similar systems. © 1985.
