Structures of gold Clusters : ordered, disordered isomers and transitions among them

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概要

• 論文の詳細を見る

• The structure of finite atomic system becomes complicated when N increasing, and may influence on the properties of clusters and cluster-assembled materials. We studied the near ground structures of Au_n (n from 38 to 55) clusters by using genetic algorithm with a Gupta n-body potential. The most stable configurations are found mainly disordered with the ordered isomers very close in energy to the ground state. The lowest-lying ordered structure changes from close packed mode to icosahedron-like (close shell) structure with increasing cluster size. Dynamic simulations on Au_<55> reveal the solid-solid structural transitions among different symmetric configurations, from cube-octahedron to icosahedron and disordered structure, at certain temperatures below the melting point.

• 素粒子論グループ 素粒子研究編集部の論文
• 2002-06-20

著者

• 李 天信

  筑波大物理

• LEE Sang-Moo

  Institute of Physics, University of Tsukuba

• Lee Sang-moo

  Institute Of Physics Tsukuba University

• Wang Guang-Hou

  National Laboratory of Solid State Micro structures and Department of Physics, Nanjing University

• Wang Guang-hou

  National Laboratory Of Solid State Micro Structures And Department Of Physics Nanjing University

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• Structures of gold Clusters : ordered, disordered isomers and transitions among them
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