Within the framework of empirical potentials (Modified Stillinger-Weber), the energy and the core structure of the c-edge basal dislocation in wurtzite GaN were modelled. In addition to the already-known core configurations, two new ones without wrong bonds were reported. The calculations showed that the configurations which contained wrong bonds were the most energetically favourable in both glide and shuffle sets.

New Core Configurations of the c-Edge Dislocation in Wurtzite GaN. I.Belabbas, J.Chen, M.A.Belkhir, P.Ruterana, G.Nouet: Physica Status Solidi C, 2006, 3[6], 1733-7