The geometric structure of Rb Cu(111) investigated with X-ray standing waves: Rb coverage dependence

D. Heskett*, P. Xu, L. Berman, C. C. Kao, M. J. Bedzyk

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We have carried out a back reflection X-ray standing wave (BRXSW) investigation of the geometric structure and degree of ordering of the system Rb Cu(111) as a function of Rb coverage. We observe no change in the Rb-Cu(111) perpendicular spacing as a function of coverage from saturation coverage of θ = 1 4 down to a coverage of θ = 1 16. We find a high degree of ordering of the Rb atoms perpendicular to the surface at all coverages, but a very low degree of order parallel to the Cu(111) surface. No differences in our results were detected for measurements at room temperature versus at ∼ 190 K.

Original languageEnglish (US)
Pages (from-to)267-275
Number of pages9
JournalSurface Science
Volume344
Issue number3
DOIs
StatePublished - Dec 30 1995

Keywords

  • Alkali metals
  • Copper
  • Low index single crystal surfaces
  • Metallic surfaces
  • Photon absorption spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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