Papers by Keyword: Magic Numbers

Abstract: An exact description of the distribution of 2D bimetallic clusters deposited on a square substrate has been obtained via an exact inventory algorithm. We show that several features of the monometallic distribution can be altered by the presence of a second species within the clusters. The diagram of ground-state morphologies of such clusters is built as a function of the chemical interactions between both components. As a consequence, the maxima in the cluster size distribution that indicate the magic numbers can be smoothened or shifted during co-deposition as a function of the composition of the two-component phase.

Abstract: A molecular dynamic simulation study has been performed for a large-sized system consisting of 106 liquid metal Al atoms to deeply investigate the formation and magic number characteristics of various cluster formed during solidification processes. It has been found that the numbers of various types of cluster in the system obviously possess peak values, namely, magic numbers. The first, second, third, .…,and tenth magic numbers are determined in turn in the order of 13, 19, 25(27), 31(33), 38(40), 42(45), 48(51), 55(59), 61(65), 67,…( the numbers in the brackets are the second peak values in the corresponding level of cluster). This magic number serial is in good agreement with the experimental results obtained by Harris et al, and this method determining the magic numbers from the clusters according to the level of basic cluster can be used to afford a primary scientific and reasonable explanation to experimental results.