Growth of metastable high-order commensurate overlayers of Pb on Cu(001)

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Abstract

We studied the growth and ordering of a Pb layer deposited on Cu(001) at 150 K. Contrary to the case of adsorption of Pb at room temperature, islands readily form. These islands order in a high-order commensurate structure of symmetry ( 61 × 61) R tan-1( 5 6). We followed the growth of these islands using atom beam scattering. From the measurement of the island diffraction peak profiles we found a power growth law for the mean island-size versus coverage. Upon increasing the coverage another high-order commensurate structure is formed, (5 × 5) R tan-1( 3 4). All the ordered phases obtained by adsorption at low temperature are metastable.

Original languageEnglish (US)
Pages (from-to)955-959
Number of pages5
JournalSurface Science
Volume287-288
Issue numberPART 2
DOIs
StatePublished - May 10 1993

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces

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