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- W2040574850 abstract "Embedded-atom molecular dynamics simulations were used to follow the diffusion dynamics of compact Pt clusters with up to 19 atoms on Pt (111) surfaces. The results reveal a novel cluster diffusion mechanism, involving successive shear translations of adjacent subcluster regions, which give rise to reptation, a snake-like gliding motion. We show that for compact clusters with 4 to 6 atoms, this mechanism competes energetically with that of island diffusion through concerted motion. However, as the cluster size increases from >7 to ≃20 atoms, reptation becomes the energetically favored diffusion mechanism. The concerted shear motion of subcluster regions, leading to reptation, is also shown to play a significant role in dendritic-to-compact morphological transitions of Pt islands." @default.
- W2040574850 created "2016-06-24" @default.
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- W2040574850 date "2000-07-01" @default.
- W2040574850 modified "2023-09-24" @default.
- W2040574850 title "Cluster diffusion and surface morphological transitions on Pt (111) via reptation and concerted motion" @default.
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- W2040574850 doi "https://doi.org/10.1016/s0040-6090(99)00892-5" @default.
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