van der Waals forces between nanoclusters: importance of many-body effects.
van der Waals interactions between nanoclusters have been calculated with a self-consistent, coupled dipole method. The method accounts for all many-body (MB) effects. Comparison is made between the exact potential energy, V, and the values obtained with two alternative methods: the sum of two-body interactions and the sum of two-body and three-body interactions. For all cases considered, the three-body term alone does not accurately represent the MB contributions to V. MB contributions are especially large for shape-anisotropic clusters.
Kim
Hye-Young
HY
Department of Physics, The Pennsylvania State University, University Park, 16802, USA. hyk2@psu.edu
Sofo
Jorge O
JO
Velegol
Darrell
D
Cole
Milton W
MW
Lucas
Amand A
AA