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Analysis and Interpretation of Scanning Tunneling Microscopy Images in an Electrochemical Environment: Copper on AU(111)

  • W. Haiss
  • J. K. Sass
  • D. Lackey
  • M. van Heel

Abstract

The electrochemical deposition of a copper monolayer on Au(111) has been studied by STM in H2SO4 and Na2SO4 solutions. Three different superstructures, which are attributed to the adsorption of either HSO 4 , SO 4 2− or both anions, have been observed for the full monolayer. Evidence for the expected epitaxial (1 × 1) overlayer was also obtained at very negative potentials, by avoiding bulk copper growth. A novel STM data analysis by multivariate statistical procedures is shown to provide detailed information, which is not evident in the raw data. The need for a better understanding of the tunneling and imaging mechanisms in an electrochemical environment is emphasized.

Keywords

Scanning Tunneling Microscopy Multivariate Statistical Analysis Desorption Peak Scan Tunneling Microscopy Image Electrochemical Environment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • W. Haiss
    • 1
  • J. K. Sass
    • 1
  • D. Lackey
    • 1
  • M. van Heel
    • 1
  1. 1.Fritz-Haber-Institut der MPGBerlinGermany

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