A Monte Carlo method was described for the calculation of the drift mobility of interacting ions on a simple cubic lattice in an electric field. This formalism provided a useful operational model for electromigration in interstitial solid solutions. The results, which showed a correlation in the drift of the ions, could be interpreted either in terms of a deviation from the Nernst-Einstein relation in the sense of vacancy wind effects or as an intrinsic correlation effect in the diffusion coefficient of the charge carriers. It was also shown that the usual tracer correlation factor could be calculated upon subtracting the square of the average drifts from the average squared displacements.

Drift Mobility Correlation in a Simple Cubic Lattice. G.E.Murch, R.J.Thorn: Journal of Physics and Chemistry of Solids, 1978, 39[12], 1301-5