A model for dislocation climb was proposed which was based upon the idea that dislocations could act as sources and sinks for point defects. By exploiting this concept, the pair of point defects which was required for climb could be produced simultaneously at the dislocation core; even when only one type of point defect was absorbed at the core. In real materials, where supersaturation of one type of point defect occurred, an asymmetry existed with regard to the behavior of  and  dislocations. Also, the presence of phase separation and atomic ordering in mixed III-V materials imposed a drag effect upon dislocation climb.

R.Vardya, S.Mahajan: Philosophical Magazine A, 1995, 71[3], 465-72