A symmetry adapted approach to vibrational excitations in atomic clusters
Frank A.Frank A.Lemus R.Bijker R.Pérez-Bernal F.Arias J.M.Arias J.M.Arias J.M.
Czechoslovak Journal of Physics
páginas 782 - 788
An algebraic method especially suited to describe the strongly anharmonic vibrational spectra in molecules may be an appropriate framework to study the vibrational spectra of Na+n clusters, where nearly flat potential energy surfaces and the appearance of close lying isomers have been reported. As an illustration we describe the model and apply it to the Be4, H+3, Be3 and Na+3 clusters.