Interaction of moving discrete breathers with simulated interstitial defects
نویسندگان
چکیده
In this paper, 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 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. PACS. 63.20.Ry Anharmonic lattice modes – 05.45.Yv Solitons – 61.72.jd Interstitials
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تاریخ انتشار 2008