Interaction of moving discrete breathers with interstitial defects
arXiv:0907.4499 · doi:10.3934/dcdss.2011.4.1057
Abstract
In this paper, interstitial migration generated by scattering with a mobile breather is investigated numerically in a Frenkel-Kontorova one-dimensional lattice. Consistent with experimental results it is shown that interstitial diffusion is more likely and faster than vacancy diffusion. Our simulations support the hypothesis that a long-range energy transport mechanism involving moving nonlinear vibrational excitations may significantly enhance the mobility of point defects in a crystal lattice.
11 pages, 10 figures