Al(111) revisited

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Abstract
A new, more refined analysis of the old LEED intensity data from Al(111) (Lang and Kohn, 1970) using new intensity calculations and reliability factors confirms the earlier LEED result about the first interlayer spacing being slightly expanded (2.2%) with respect to the bulk. This result is in striking contrast to the recent EXAFS study of Al(111) by Bianconi and Bachrach (1979), according to which the first interlayer spacing is contracted (8.1%) with respect to the bulk. Considerably poorer agreement between theory and experiment is found for 8.1% contraction.