Interaction of moving discrete breathers with simulated interstitial defects. J Cuevas, B Sánchez-Rey, JC Eilbeck, FM Russell. Discrete and Continuous Dynamical Systems - Series S, 4(5):1057-1067, October 2011 (online December 2010);

Interaction of moving discrete breathers with simulated interstitial defects.

J Cuevas, B Sánchez-Rey, JC Eilbeck and FM Russell (pdf copy 1.6 Mb.)

Abstract:

Interstitial migration generated by scattering with a mobile breather is investigated numerically in a Frenkel-Kontorova one-dimensional lattice. In accordance with experimental results it is shown that interstitial diffusion is more likely and faster than vacancy diffusion. Our simulations supports 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.

Discrete and Continuous Dynamical Systems - Series S, 4(5):1057-1067, October 2011 (online December 2010); doi: 10.3934/dcdss.2011.4.1057
Proceedings of the conference: LENCOS'09 Localized Excitations in Nonlinear Complex Systems, Sevilla, July 14-17, 2009