Structure and stability of clusters on metal surfaces |
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| Authors: | N. A. Levanov A. A. Katsnel’son A. É. Moroz V. S. Stepanyuk W. Hergert K. Kokko |
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| Affiliation: | (1) M. V. Lomonosov Moscow State University, 119899 Moscow, Russia;(2) Martin Luther University, Halle-Wittenburg, D-06108 Halle, Germany;(3) Turku University, FIN-20014 Turku, Finland |
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| Abstract: | Small clusters of 3d metals Ni/Ni(001), Cu/Cu(001), 4d-Pd/Pd(001), Ag/Ag(001), 5d-Pt/Pt(001), and Au/Au(001) are investigated by semiempirical methods using multiparticle interatomic interaction potentials. It is shown that the same magic numbers (4, 6, and 9) are characteristic for all metals indicated; these numbers are determined by the symmetry characteristics of the clusters, related to the morphology of the fcc (001) substrate. It is shown for Pt/Pt(111) that small clusters of seven, ten, and more atoms are stable for the fcc (111) surface. This confirms that the magic numbers are associated with the symmetry of the clusters. Fiz. Tverd. Tela (St. Petersburg) 41, 1329–1334 (July 1999) |
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