Local Correlation during Ostwald ripening of two-dimensional islands on Ag(111)

Karina Morgenstern, G. Rosenfeld, George Comsa

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Abstract

Using two-dimensional Ag adatom islands on Ag(111) as a model system, we study the importance of local correlations in diffusion-limited Ostwald ripening. For the coverages studied (0.08, 0.21, and 0.3 ML), we find that the ripening can be surprisingly well described in a nearest neighbour model based on pairwise atom exchange between neighbouring islands. The results reveal the local nature of diffusion-limited Ostwald ripening and demonstrate the limits of the mean-field theories in describing experimental data.
Original languageUndefined
Pages (from-to)289-300
Number of pages12
JournalSurface science
Volume1999
Issue number441
DOIs
Publication statusPublished - 1999

Keywords

  • METIS-128671
  • IR-73145

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