Misfit dislocation loops and critical parameters of quantum dots and wires |
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| Authors: | A. L. Kolesnikova A. E. Romanov |
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| Affiliation: | 1. Institute of Problems of Mechanical Engineering , Russian Academy of Sciences , Bolshoj 61, Vas.Ostrov, St.Petersburg 199178, Russia;2. Ioffe Physico-Technical Institute , Russian Academy of Sciences , Polytechnicheskaya 26, St.Petersburg 194021, Russia |
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| Abstract: | Quantum dots and wires, having a mismatch of crystal lattice parameters with respect to the surrounding matrix, are modelled by spherical and cylindrical inclusions, respectively. By considering the energy of a circular prismatic dislocation loop nucleation in the inclusions, the critical radius and critical dilatation for a dot and a wire are calculated. The results are compared with similar critical parameters for a mismatched film on a substrate. |
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