Atomic configurations of a screw dislocation in A b.c.c. lattice

The interaction energy between atomic rows is calculated in the approximation of pairwise interaction. (This approximation is only valid for normal metals). The asymptotic behaviour of this energy is discussed as a function of the conduction electron number. This method fits computing with an iterative process the atomic configurations of a screw dislocation in a lithium lattice. Two configurations are found with three-fold symmetry, showing an asymmetry in (112) planes.