Metallic softness influence on magic numbers of clusters

The metallic softness parameterαr ₀ determines the structure of the cluster and governs the rule of magic numbers. Using molecular dynamic method, the stable structures and magic numbers are determined for the clusters consisting of 13 up to 147 atoms in medium range Morse potentials, which is suitable for most of metals. As the number of atoms constituting the cluster increases, the stable structures undergo transition from face-centered (FC) to edge-centered (EC) structures. The magic number take ones of FC series before transition and take ones of EC series after that. The transition point from FC to EC structures depends on the value of softness parameter. Foundation item: Supported by the National Natural Science Foundation of China (19674042, 19834070), Science and Technology Program of National Education Ministry of China Biography: Liu Hao-yang (1975-), male, Ph. D, candidate, research direction: liquid physics.