  The size-dependent electronic, structural, magnetic and vibrational
properties of small pure cop- per and silver clusters and their alloys with one
and two palladium atoms are studied by using full-potential all-electron
density functional computations. The stable isomers of these clusters are
identified and their theoretical magic numbers are determined via the analysis
of the second differ- ence of their minimized energy. We discuss that the doped
Pd atoms generally prefer to sit in the high coordination sites of the pure
clusters. It is argued that Pd doping influences the structural properties and
the two dimensional to three dimensional structural cross over in the small Cu
and Ag clusters. The many body based GW correction is applied for more accurate
determination of the electron affinity and ionization potential of these
systems. Magnetic and vibrational properties of the pure and doped clusters are
presented and discussed.
