Jm. Pacheco et al., REINTRODUCING THE IONIC STRUCTURE IN THE JELLIUM MODEL FOR METAL-CLUSTERS - PSEUDOPOTENTIAL PERTURBATION-THEORY, Surface review and letters, 3(1), 1996, pp. 313-316
Ionic structure effects in small sodium clusters are studied via secon
d-order pseudopotential perturbation theory. It is found that this for
mulation not only leads to the same ionic structures found via ab-init
io Car-Parrinello structure optimization, but also to a substantial im
provement in the overall description of the optical response of the cl
usters.