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.
|Pages (from-to)||1057 - 1067|
|Number of pages||11|
|Journal||Discrete and Continuous Dynamical Systems - Series S|
|Publication status||Published - Dec 2010|
Cuevas, J., Sanchez-Rey, B., Eilbeck, J. C., & Russell, F. M. (2010). Interaction of moving discrete breathers with interstitial defects. Discrete and Continuous Dynamical Systems - Series S, 4(5), 1057 - 1067. https://doi.org/10.3934/dcdss.2011.4.1057