摘要
根据嵌入原子法的物理图象,建立了适合描写金和银团簇的半经验模型势,并系统地计算了Aun,Agn(n≤13)的结构和结合能,探讨了团簇的结构和结合能之间的内在关系以及团簇的基态结构随原子数变化的规律.
Baed on an empirical potential we newly derived by the embedded-atom method,we have performed calculations of cohesive energies and stable structures for gold and silver clusters with up to 13 atoms. The evolution of the most stable structures with the growth of cluster size is elucidated. It is found that gold and silver clusters are inclined to have maximum bond numbers and uniform bond lengths.