  Using a global optimization approach that directly searches for the
composition of greatest stability, we have been able to find the particularly
stable structures for binary Lennard-Jones clusters with up to 100 atoms for a
range of Lennard-Jones parameters. In particular, we have shown that just
having atoms of different size leads to a remarkable stabilization of
polytetrahedral structures, including both polyicosahedral clusters and at
larger sizes structures with disclination lines.

Materials Science;Atomic and Molecular Clusters