"Adsorption-Site Investigation of Rb/Cu(111) Using the X-Ray Standing-W" by X. Shi, C. Su et al.
 

Document Type

Article

Date of Original Version

5-15-1994

Abstract

We have carried out a back reflection x-ray standing-wave investigation to study the adsorbate-substrate bond length and bonding site for the system Rb/Cu(111). Our low-energy electron diffraction study showed an ordered (2×2) phase for one monolayer of Rb on Cu(111) (θ=0.25). By measuring both the (111) and (111¯) Bragg reflections at this coverage, we determine the Rb adsorption to be in the top site. We observe a high degree of order in the Rb overlayer perpendicular to the surface, with large disorder parallel to the surface.

Publisher Statement

©1994 The American Physical Society

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