Abstract
Molecular dynamics simulations combined with the nudged elastic band method for finding transition states and corresponding activation energies are used to study mechanisms of nucleation, growth, and motion of misfit dislocation loops at the Ag/Cu(111) interface. A variety of mechanisms involving concerted motion of several atoms are identified. Nucleation has the highest activation energy, $\ensuremath{\sim}1\mathrm{eV}.$ Growth and motion of the loops have activation energies in the range $0.3--0.7\mathrm{eV}.$
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