Structure and Melting of Argon Clusters on a Substrate
The structural and thermodynamic properties of 13-atom argon clusters adsorbed on a substrate are studied using Molecular Dynamics simulations. The cluster atoms interact among themselves via a Lennard Jones potential, whereas the cluster-substrate interaction is modeled by a continuous model for the adsorbent surface. Heating and cooling processes on the system show that the adsorbed clusters exhibit solid and liquid like phases as well as a coexistence region of both of them. The strength of the cluster-substrate interaction determines the mechanism of desorption in the region of high temperatures.
PACS Nos: 36.40.+d, 64.70.Dv, 68.40.+e, 68.45.-v.
KeywordsCoexistence Region Cluster Configuration Free Cluster Weak Substrate Argon Cluster
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