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Title: On the Use of Different Potential Energy Functions in Rare-Gas Cluster Optimization by Genetic Algorithms: Application to Argon Clusters
Authors: Marques, J. M. C. 
Pereira, F. B. 
Leitão, T. 
Issue Date: 10-Jul-2008
Publisher: American Chemical Society
Issue Date: 10-Jul-2008
Publisher: American Chemical Society
Citation: The Journal of Physical Chemistry A. 112:27 (2008) 6079-6089
Abstract: We study the effect of the potential energy function on the global minimum structures of argon clusters arising in the optimization performed by genetic algorithms (GAs). We propose a robust and efficient GA which allows for the calculation of all of the putative global minima of ArN (N = 3−78) clusters modeled with four different potentials. Both energetic and structural properties of such minima are compared among each other and with those previously obtained for the Lennard-Jones function. In addition, the possibility of obtaining global minima of one potential through local optimization over the corresponding cluster geometry given by other potentials was associated with some structural parameters. The influence of the contribution from the three-body (Axilrod−Teller−Muto) triple-dipole potential (including or not a damping function to describe its correct behavior at smaller interatomic distances) has also been analyzed.
ISSN: 1089-5639
DOI: 10.1021/jp711918t
Rights: openAccess
Appears in Collections:FCTUC Eng.Informática - Artigos em Revistas Internacionais
FCTUC Química - Artigos em Revistas Internacionais

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