Adsorption-site investigation of Rb/Cu(111) using the x-ray standing-wave method

X. Shi*, C. Su, D. Heskett, L. Berman, C. C. Kao, M. J. Bedzyk

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

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) (=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.

Original languageEnglish (US)
Pages (from-to)14638-14642
Number of pages5
JournalPhysical Review B
Volume49
Issue number20
DOIs
StatePublished - 1994

ASJC Scopus subject areas

  • Condensed Matter Physics

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