Global minima of iron clusters described by Gupta potential

In this paper, we present global minimum energy for iron clusters, ranging from sizes N = 2 to 100 atoms, described by the phenomenological Gupta potential. Our optimized structures and symmetry groups are in agreement with previous ones obtained using Finnis–Sinclair potential; but our energy levels and nearest neighbor distances differ slightly. The origins of the differences are related back to the differences in the potentials.