2008/05/15 by Ana Carpio, Luis L. Bonilla, Luis L Bonilla +3 · 4 citations
Materials Science · Physics and Astronomy · #Chemical and Physical Properties of Materials #Graphene research and applications #Topological Materials and Phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1088/1367-2630/10/5/053021
published as New Journal of Physics 10 (2008) 053021
openalex publication_date 2008/05/15 · arxiv created 2008/06/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We study the stability and evolution of various elastic defects in a flat graphene sheet and the electronic properties of the most stable configurations. Two types of dislocations are found to be stable: 'glide' dislocations consisting of heptagon–pentagon pairs, and 'shuffle' dislocations, an octagon with a dangling bond. Unlike the most studied case of carbon nanotubes, Stone Wales defects seem to be dynamically unstable in the planar graphene sheet. Similar defects in which one of the pentagon–heptagon pairs is displaced vertically with respect to the other one are found to be dynamically stable. Shuffle dislocations will give rise to local magnetic moments that can provide an alternative route to magnetism in graphene.