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Melting Of The Glasslike 19-Atom Gold Cluster

Author

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  • SHI-WEI REN

    (Department of Applied Physics, College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, Hebei Province, P. R. China)

Abstract

In this paper, the melting behaviors of the glasslike clusterAu19are calculated and analyzed by using standard microcanonical molecular-dynamics simulations. The calculated results show a multi-step melting process. The first stage involves the majority of the surface atoms (14 atoms). An interesting phenomenon is that the minority of the surface atoms (4 atoms) are still in a solid-like state. The second stage involves all of the surface atoms. But there are two sites where the atoms stay for a relatively long time. The third stage corresponds to the frequent isomerizations involving all the surface atoms. The final stage consists of isomerization transitions involving all of the atoms, including the central atom of the cluster. The unique melting processes lead to the unique features of the caloric curve, the root-mean-square bond-length fluctuation and the heat capacity of the glasslikeAu19.

Suggested Citation

  • Shi-Wei Ren, 2009. "Melting Of The Glasslike 19-Atom Gold Cluster," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 20(05), pages 667-675.
    • Handle: RePEc:wsi:ijmpcx:v:20:y:2009:i:05:n:s012918310901387x
    DOI: 10.1142/S012918310901387X
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