The relative stability of the single period and double period reconstructions in the 90° partial dislocation core was investigated across the cubic-semiconductor family. The effect of pressure on the phase stability was investigated for the elemental semiconductors. The relative phase stability of the reconstructions was correlated to the bulk crystal's propensity for bond bending versus bond stretching. It was observed that when the Kleinman parameter of a crystal was less than 0.6, the double period reconstruction was favored.

Reconstruction Energies of Partial Dislocations in Cubic Semiconductors. S.P.Beckman, D.C.Chrzan: Physical Review B, 2007, 76[14], 144110 (5pp)