Geometric structures, electronic properties, and vibrational frequencies of small tellurium clusters
2002
Geometries, energetics, and vibrational frequencies of Te n (n≤8) clusters are systematically investigated using the methods based on density-functional theory with the generalized gradient approximation. The geometries ofthe global minima of Te n (n≤8) are proposed in terms of calculated atomic average binding energies of the isomers, which are the same shapes as those of Se n (n≤8). The proposed lowest-energy geometries of Te n (n≤8) are also supported by the agreement of calculated fragmentation pathways of Te + n (n≤8) with measurement. Moreover, we predicted all of the vibrational frequencies of Te n (n≤8) with low energy. The evaluated vibrational modes of several isomers match the related vibrational frequencies from experiment very well.
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