Low temperature scanning tunneling microscopy of Na on Cu(1 1 1)

J. Kliewer, R. Berndt

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Room temperature grown Na films on Cu(111) were investigated with low temperature scanning tunneling microscopy (STM) at coverages Θ = 0.3 to 1.1 (ML) (monolayer, ML). A p(3 × 3) reconstruction with four atoms per unit cell at full ML coverage is observed in accord with previous low energy electron diffraction data. For coverages below Θ = 1 ML, a structure model is proposed. We find that an analysis of the electronic structure of the Na overlayer state provides complementary information for the characterization of the films. For the second ML Na film, island growth is observed. From an analysis of the STM data of the second ML Na film, a structure model is developed.

Original languageEnglish (US)
Pages (from-to)250-258
Number of pages9
JournalSurface Science
Volume477
Issue number2-3
DOIs
StatePublished - Apr 20 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

Keywords

  • Alkali metals
  • Copper
  • Scanning tunneling microscopy
  • Single crystal epitaxy
  • Surface electronic phenomena (work function, surface potential, surface states, etc.)

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