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Simulation of the submonolayer homoepitaxial clusters growth on Ag(110)

  • C. Mottet
  • R. Ferrando
  • F. Houtinfinde
  • A. C. Levi
Conference paper

Abstract

The submonolayer growth of Ag/Ag(110) is studied by kinetic Monte Carlo simulations including deposition, diffusion, and fully reversible aggregation with both anisotropic diffusion barriers and anisotropic bond energies. The harriers for the elementary diffusion processes, including the Schwoebel harrier at step borders, are calculated by many-body tight-binding potentials. Depending on growth conditions (temperature T, adatom flux F, and coverage θ the model shows morphology transitions to one-dimensional (1D) in-channel strips and then to 2D or 3D compact islands. At low T, the island density n I versus θ shows the nucleation, growth (at saturation density), and the coalescence regimes, whereas at higher T,at which point detachment from islands becomes effective, n I presents a maximum at very low θ, followed by a decrease, at first caused by island dissolution and then, for higher θ, by cOalescence.

PACS

81.15.Aa Theory and models of film growth 81.15.Hi Molecular, atomic, ion, and chemical beam epitaxy 82.30.Nr Association, addition, insertion, cluster formation, hydrogen bonding 

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Copyright information

© Springer-Verlag Italia 1999

Authors and Affiliations

  • C. Mottet
    • 1
  • R. Ferrando
    • 1
  • F. Houtinfinde
    • 1
  • A. C. Levi
    • 1
  1. 1.Dipartimento di Fisica dell’Università di GenovaINFM and CFSBT/CNRGenovaItaly

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