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configurations in a unit cell of the Ge. White circles represent the Ge atoms, black circles the As atoms, and squares .
The temperature dependence of: the As concentration of unbound As atoms, and clusters, for As concentration of and initial concentration of .
Binding energies (eV) of clusters, to isolated species, in Ge and Si. For comparison, the cluster binding energies in Si of Xie and Chen (Ref. 11) and of Satta et al. (Ref. 12) are shown. In parentheses are the values of the clusters with one As atom at the second nearest neighbor position to the .
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