A model metal potential exhibiting polytetrahedral clusters
arXiv:cond-mat/0301374 · doi:10.1063/1.1574797
Abstract
Putative global minima have been located for clusters interacting with an aluminium glue potential for N<190. Virtually all the clusters have polytetrahedral structures, which for larger sizes involve an ordered array of disclinations that are similar to those in the Z, H and sigma Frank-Kasper phases. Comparisons of sequences of larger clusters suggest that the majority of the global minima will adopt the bulk face-centred-cubic structure beyond N=500.
14 pages, 7 figures