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- W2090549176 abstract "Field-ion microscopy measurements show a large value of the diffusion prefactor for the Pt7 cluster, exceeding those of small Ptn (n≤4) clusters by two orders of magnitude. In the present paper, with long-time (∼0.2μs) simulations and tracing of interstitial atoms on the surface, a linear relation between the mean square displacement of the cluster's mass-center and the simulation time is obtained. The activation energy and prefactor for two-dimensional atomic clusters Ptn (1≤n≤7) on the Pt(1 1 1) surface are determined by molecular dynamics. The present simulations can interpret the experimental data reasonably. The large prefactor of the Pt7 cluster could be attributed to a large number of nonequivalent diffusion processes with similar activation energies on the soft Pt surface." @default.
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- W2090549176 date "2011-07-01" @default.
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- W2090549176 title "Dynamical simulations of Pt <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML altimg=si0003.gif overflow=scroll><mml:mo stretchy=false>(</mml:mo><mml:mn>1</mml:mn><mml:mo>≤</mml:mo><mml:mi>n</mml:mi><mml:mo>≤</mml:mo><mml:mn>7</mml:mn><mml:mo stretchy=false>)</mml:mo></mml:math> clusters on Pt(1 1 1) surface" @default.
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- W2090549176 doi "https://doi.org/10.1016/j.physb.2011.03.058" @default.
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