Enhanced self-diffusion on Cu(111) by trace amounts of s: chemical-reaction-limited kinetics.

Academic Article

Abstract

  • We find that less than 0.01 monolayer of S can enhance surface self-diffusion on Cu(111) by several orders of magnitude. The measured dependence of two-dimensional island decay rates on S coverage (theta(S)) is consistent with the proposal that Cu3S3 clusters are responsible for the enhancement. Unexpectedly, the decay and ripening are diffusion limited with very low and very high theta(S) but not for intermediate theta(S). To explain this result we propose that surface mass transport in the intermediate region is limited by the rate of reaction to form Cu3S3 clusters on the terraces.
  • Authors

  • Ling, WL
  • Bartelt, NC
  • Pohl, Karsten
  • de la Figuera, J
  • Hwang, RQ
  • McCarty, KF
  • Status

    Publication Date

  • October 15, 2004
  • Has Subject Area

    Published In

    Keywords

  • Brain Disorders
  • Digital Object Identifier (doi)

    Pubmed Id

  • 15525006
  • Start Page

  • 166101
  • Volume

  • 93
  • Issue

  • 16