Growth and structural characterization of a lead overlayer on cu(100)

Wei Li, J. S. Lin, Gianfranco Vidali, M. Karimi

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24 Scopus citations

Abstract

Ordered phases of Pb on Cu(100) have been studied using helium beam scattering and performing charge density calculations. At low adsorption temperature, we obtain a (5x5) R tan-1-(3/4) phase. A structure model with square symmetry and superstructure buckling has been put forward. Calculated charge density profile which shows a buckled superstructure is in good agreement with our structural model. We have also investigated the C(5⇃2X⇃2) R 45° phase which is adsorbed at high temperature. By analyzing measured diffraction peaks, we showed that this overlayer is flat and the lead atoms near the antiphase domain walls are sitting at the same levels as the other lead atoms. The thermal behavior of diffraction peak intensities shows that this phase undergoes a first order transition at 503 K.

Original languageEnglish (US)
Pages (from-to)1707-1711
Number of pages5
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume9
Issue number3
DOIs
StatePublished - 1991

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ASJC Scopus subject areas

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

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