A two-component phenomenological model of small metallic cluster growth on a substrate is presented and solved. The results are compared with those of recent experimental scanning tunneling electron microscope (STEM) studies. It is shown that this model can quantitatively explain all the features found in the experimental study, including in particular the presence of an unshifting peak at small radius in the cluster size distribution function.
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The two-componenmto delu sedin this work was originallyd evelopedin the courseo f a collaboratiobne tweeno ne of us (O.T.V.) and G.F. Mazenko, whosec ontributiown e gratefullya cknowledgeW. e are greatlyin debtedto M. Listvan for bringingt he resultso f ref. \[7\t]o our attentionf,o r many discussions and conversationcso ncerningth e experimentrael sultsa, nd for thoughtful commentosn the drafto f this manuscripTt.h is work was supporteidn part by the Microelectronicasn d InformationS ciencesC entera t the Universityo f Minnesota.