Stability of relaxed Lennard-Jones models made of 500 to 6000 atoms |
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Authors: | B Raoult J Farges M F De Feraudy G Torchet |
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Institution: | 1. Laboratoire de Physique des Solides, Université de Paris-Sud, LA2-Batiment 510, F-91405, Orsay, France
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Abstract: | We present a study of the stability of clusters models made of a numberN of atoms in the range 500 to 6000 atoms, freely interacting through the Lennard-Jones potential. The potential energy per atom, calculated for relaxed models, shows that stable models belong to an icosahedral sequence whenN<1600 and to a decahedral sequence beyond. A coexistence size range of both structures is discussed in connection with experimental results on argon clusters in free jet expansions. |
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