Abstract
The general features of the geometries and electronic properties for 3d, 4d, and 5d transition-metal atom doped Au6 clusters are systematically investigated by using relativistic all-electron density functional theory in the generalized gradient approximation (GGA). A number of structural isomers are considered to search the lowest-energy structures of M@Au6 clusters (M = 3d, 4d and 5d transition-metal atoms), and the transition metal atom locating in the centre of an Au6 ring is found to be in the ground state for all the M@Au6 clusters. All doped clusters, expect for PdAAu6, show large relative binding energies compared with a pure Au7 cluster, indicating that doping by 3d, 4d, 5d transition-metal atoms could stabilize the Au6 ring and promote the formation of a new binary alloy cluster.
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