Stacking faults and partial dislocations in graphene |
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| Authors: | MP Ariza R Serrano JP Mendez M Ortiz |
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| Institution: | 1. Escuela Técnica Superior de Ingeniería , Universidad de Sevilla , Camino de los descubrimientos, s.n., 41092 Sevilla , Spain mpariza@us.es;3. Escuela Técnica Superior de Ingeniería , Universidad de Sevilla , Camino de los descubrimientos, s.n., 41092 Sevilla , Spain;4. Graduate Aeronautical Laboratories , California Institute of Technology , 1200 E. California Blvd., Pasadena , CA 91125 , USA |
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| Abstract: | We investigate two mechanisms of crystallographic slip in graphene, corresponding to glide and shuffle generalized stacking faults (GSF), and compute their γ-curves using Sandia National Laboratories Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS). We find evidence of metastable partial dislocations for the glide GSF only. The computed values of the stable and unstable stacking-fault energies are suggestive of a high stability of full dislocations against dissociation and of dislocation dipoles against annihilation. |
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| Keywords: | graphene stacking faults dislocations dynamic stability |
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