Abstract
The fields of elastic deformation and stress around the centers of dislocations and crowdions in 2D crystals with isotropic elastic properties are described in the continuum approximation. The elastic energy of both types of defects was calculated and its dependence on crystal size was discussed. Considered also was the quantitative uncertainty associated with the inapplicability of the continual description of deformation at atomic distances from the centers of the defects. The results obtained by using the continuum theory were further improved by comparing with the results of numerical analysis using the methods of molecular dynamics of atomic structure of dislocations and crowdions in a hexagonal 2D crystal. The present work continues the study that was commenced in the previous paper (Fiz. Nizk. Temp. 40, 1366 (2014)).
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