Warning! Note that elemental potentials taken from alloy descriptions may not work well for the pure species. This is particularly true if the elements were fit for compounds instead of being optimized separately. As with all interatomic potentials, please check to make sure that the performance is adequate for your problem.
Citation: A.D. Mistriotis, N. Flytzanis, and S.C. Farantos (1989), "Potential model for silicon clusters", Physical Review B, 39(2), 1212-1218. DOI: 10.1103/physrevb.39.1212.
Abstract: An interatomic potential for silicon is proposed, which is a significant improvement over the Stillinger-Weber model. This potential is valid for clusters with more than six atoms, where π bonding is not significant because of the large degree of coordination. Guided by ab initio electronic calculations, we introduced four-body interactions to the potential, which were essential to give good agreement with the melting point of the crystal and the geometries and the energies of the ground and low metastable states of silicon clusters.