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Abstract <p>The vibrational properties of small clusters of Pb on the perfect and defective Ni(111) surface are studied by using interatomic interaction potentials constructed with the embedded atom approximation. Here we show a local density of phonon states for the point defects which is distinctly different for an impurity cluster adsorbed on the ideal surface as opposed to one placed in a vacancy cavity. The phonon density spectra are indicative of delocalized phonons and localized vibrations. We also discuss equilibrium structure of free and adsorbed clusters as well as the surface of the substrate.</p>

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Small Pb Clusters on Ni (111) Surface: Equilibrium Structure and Vibrations

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • G. G. Rusina,
  • S. D. Borisova

摘要

Abstract

The vibrational properties of small clusters of Pb on the perfect and defective Ni(111) surface are studied by using interatomic interaction potentials constructed with the embedded atom approximation. Here we show a local density of phonon states for the point defects which is distinctly different for an impurity cluster adsorbed on the ideal surface as opposed to one placed in a vacancy cavity. The phonon density spectra are indicative of delocalized phonons and localized vibrations. We also discuss equilibrium structure of free and adsorbed clusters as well as the surface of the substrate.