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Propagation and Interaction of Edge Dislocation (Kink) in the Square Lattice |
| JIA Li-Ping1, Jasmina Tekić2, DUAN Wen-Shan1** |
1College of Physics and Electronic Engineering and Joint Laboratory of Atomic and Molecular Physics of NWNU and IMP CAS, Northwest Normal University, Lanzhou 730070
2Vinca Institute of Nuclear Sciences, Laboratory for Theoretical and Condensed Matter Physics, University of Belgrade, Belgrade 11001, Serbia |
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| Cite this article: |
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JIA Li-Ping, Jasmina Teki?, DUAN Wen-Shan 2015 Chin. Phys. Lett. 32 040501 |
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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.
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Received: 14 October 2014
Published: 30 April 2015
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| PACS: |
05.10.-a
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(Computational methods in statistical physics and nonlinear dynamics)
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45.05.+x
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(General theory of classical mechanics of discrete systems)
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05.50.+q
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(Lattice theory and statistics)
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