Propagation and Interaction of Edge Dislocation (Kink) in the Square Lattice
JIA Li-Ping1 , Jasmina Tekić2 , DUAN Wen-Shan1**
1 College of Physics and Electronic Engineering and Joint Laboratory of Atomic and Molecular Physics of NWNU and IMP CAS, Northwest Normal University, Lanzhou 7300702 Vinca Institute of Nuclear Sciences, Laboratory for Theoretical and Condensed Matter Physics, University of Belgrade, Belgrade 11001, Serbia
Abstract ：The propagation of kink or edge dislocations in the underdamped generalized two-dimensional Frenkel–Kontorova model with harmonic interaction is studied with numerical simulations. The obtained results show that exactly one line of atoms can be inserted into the lattice, which remains at standstill. However, if more than one line of atoms are inserted into the lattice, then they will split into several lines with α =1, where α presents the atoms inserted. In other words, only the kink with α =1 is stable, while the other kinks are unstable, and will split into α =1 kinks, which remain at standstill.
收稿日期: 2014-10-14
出版日期: 2015-04-30
:
05.10.-a
(Computational methods in statistical physics and nonlinear dynamics)
45.05.+x
(General theory of classical mechanics of discrete systems)
05.50.+q
(Lattice theory and statistics)
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2015, Vol. 32 
