Resonance Raman properties of silver cluster in rare gas matrix

Noble metal clusters have attracted great attention in basic science due to their unique physical andchemical properties. Determination of the structure, electronic, and optical properties of metal cluster,is still in the focus of active research. Investigation the initial excited state structural dynamics ofmetal cluster are interesting because they provide crucial information on how the normal modes of themetal cluster are driven by the forces in the electrically excited state. The resonance Raman effect isable to identify the observed vibrations with a specific cluster species, because it correlates thevibrational modes with a particular band in the absorption spectrum of the matrix. This can be doneby studying the resonance Raman properties of metal clusters. Recently, structure and opticalproperties of small noble metal clusters either in gas phase or embedded in rare gas matrices havebeen studied intensively. Rare gas matrix can provide an inert medium for preparation andcharacterization of small metal clusters. The noble metal clusters in neutral or charged forms showstrong visible fluorescence and generally studied in the rare gas matrix that preventsphotofragmentation. The geometric and electronic structure of small metal cluster seems to be hardlyaffected by the solvation of the rare gas atoms. Time-dependent density functional theory (TD-DFT)has become a powerful approach to study low-lying valence excited states efficiently and accurately.