title: On the use of big-bang method to generate low-energy structures of atomic clusters modeled with pair potentials of different ranges.
abstract: The efficiency of the so-called big-bang method for the optimization of atomic clusters is analysed in detail for Morse pair potentials with different ranges; here, we have used Morse potentials with four different ranges, from long- ρ = 3) to short-ranged ρ = 14) interactions. Specifically, we study the efficacy of the method in discovering low-energy structures, including the putative global minimum, as a function of the potential range and the cluster size. A new global minimum structure for long-ranged ρ = 3) Morse potential at the cluster size of n= 240 is reported. The present results are useful to assess the maximum cluster size for each type of interaction where the global minimum can be discovered with a limited number of big-bang trials.
authors: Departamento de Química, Universidade de Coimbra 3004-535 Coimbra, Portugal. qtmarque@ci.uc.pt
authors: J M C
authors: JM
authors: Marques
authors: A A C C
authors: AA
authors: Pais
authors: P E
authors: PE
authors: Abreu