Determination of the lowest energy structure of Ag${}_8$ from first-principles calculations

Abstract

The ground-state electronic and structural properties, and the electronic excitations of the lowest energy isomers of the Ag${}_8$ cluster are calculated using density functional theory (DFT) and time-dependent DFT (TDDFT) in real time and real space scheme, respectively. The optical spectra provided by TDDFT predict that the D${}_{2d}$ dodecahedron isomer is the structural minimum of Ag${}_8$ cluster. Indeed, it is borne out by the experimental findings.

4 pages, 2 figures. Accepted in Physical Review A as a brief report