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Publication
Surface Science
Paper
Hills or hollows? — An ambiguity in the determination of surface corrugation
Abstract
The diffraction intensities from a corrugated hard wall are shown to be the same for a given corrugation function ζ(x, y) and −ζ(−x, −y), provided that coupling to evanescent waves is negligible. To illustrate the consequences of this ambiguity for both surface structure and surface bonding, the corrugation of the adsorbate system Ni(110) + H(1 × 2) determined from Hediffraction measurements is considered. Possible conditions under which the ambiguity could be resolved are discussed. © 1980, All rights reserved.