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- W2031031264 abstract "Embedded-atom molecular-dynamics simulations were used to follow the diffusion dynamics of compact platinum clusters with up to 19 atoms on Pt(111). The results reveal a cluster diffusion mechanism on (111) face-centered-cubic (fcc) surfaces involving successive shear translations of adjacent subcluster regions giving rise to reptation, a snake-like gliding motion. We show that for compact clusters with <7 atoms, this mechanism competes energetically with that of island diffusion through concerted motion. However, for cluster sizes of between 8 and ≃20 atoms, reptation becomes energetically favorable, especially for elongated clusters. Reptation is also shown to be an important migration mechanism for fractal (randomly ramified) and dendritic (symmetrically branched) islands." @default.
- W2031031264 created "2016-06-24" @default.
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- W2031031264 date "1999-08-01" @default.
- W2031031264 modified "2023-09-25" @default.
- W2031031264 title "Reptation: a mechanism for cluster migration on (111) face-centered-cubic metal surfaces" @default.
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- W2031031264 doi "https://doi.org/10.1016/s0039-6028(99)00715-3" @default.
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