Numerical Calculation of the Drift Diffusion Current for Elastically Interacting Point Defects

For long range interactions the probability of defect encounter is determined by the drift diffusion current of one defect to the other. This current is calculated numerically for iso‐tropic point defects in an anisotropio elastic continuum. The diffusion current is found to be a fixed fraction of that caused by a spherical potential for which the current can bewritten by a simple analytical expression.