Atomistic modelling of interaction between dislocations and misfit interface

Mechanisms responsible for the formation of misfit dislocation in lattice-mismatched system that involve gliding of the dislocation to the misfit interface have been studied using Molecular Dynamics simulations of two-dimensional Lennard-Jones system. Results show clearly how the strain due to the lattice-mismatched interface acts as a driving force for dislocation migration. Moreover, we observe dislocation reactions in which the gliding planes of dislocations change such that they can migrate to the interface.