The collective excitations and static dipole polarizability in small nanoparticles

Abstract

Collective dipole excitations for small clusters have been considered in the energy range close to the visible light. The absorption energies and static dipole polarizabilities are estimated. In the case of Ag8, Na18, Na20, Cs40, Mg10, Ba20, Ag9+, Na21+, and Mg11++ clusters, a semiclassical density functional method with the Thomas‐Fermi approximation has been used. Also, applications in Al6, Al7, (ZnS)3, and (ZnSe)4 will be discussed. The results are compared with the available data.