Platelike structures of semiconductor clusters Ge-n (n=40-44)

TitlePlatelike structures of semiconductor clusters Ge-n (n=40-44)
Publication TypeJournal Article
Year of Publication2009
AuthorsQin W, Lu WC, Zhao LZ, Zang QJ, Chen GJ, Wang CZ, Ho KM
Journal TitleJournal of Chemical Physics
Date Published09/28
ISBN Number0021-9606
Accession NumberISI:000270380300053
Keywordsgermanium clusters, growth, information, ion mobility measurements, model, silicon, spheres, transition

The structures of Ge-n (n=40-44) clusters were searched by genetic algorithm combined with a tight-binding method. First-principles calculations based on density functional theory were performed to further optimize the isomer structures. The calculated results show that Ge-n (n=40-44) clusters favor platelike structures, consisted of four small magic clusters (Ge-9 or Ge-10), and a Ge-4 core. The Ge-4 core along with the parts of the four linked small clusters forms a diamond segment. The cluster mobilities of the most stable structures are in good agreement with the experimental data. (C) 2009 American Institute of Physics. [doi:10.1063/1.3230602]

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