Dynamics and stability of nanostructures on metal surfaces

G. Rosenfeld, K. Morgenstern, M Esser, G. Comsa

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Abstract

Ultrathin metal films consisting of two-dimensional clusters are typically unstable: the cluster ensemble has the tendency to reduce its total free energy via Ostwald ripening or dynamic coalescence of mobile clusters. In this paper we give an overview of recent model experiments addressing these coarsening mechanisms. The experiments have been performed using STM on ensembles consisting of adatom or vacancy clusters with typical diameters in the nanometer range on fcc(111)-metal surfaces. Agreement with and deviations from conventional theories are discussed.
Original languageUndefined
Pages (from-to)489-496
Number of pages8
JournalApplied physics A: Materials science and processing
Volume1999
Issue number69
DOIs
Publication statusPublished - 1999

Keywords

  • METIS-128670
  • IR-73144

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