The interaction free energy between 2 fluctuating dislocation lines, in contact with a thermal bath, was obtained quantitatively. By examining both in-plane and transverse-fluctuation polarizations, attractive and repulsive contributions to the free energy were identified. The results were interpreted in terms of effective multipolar interactions and the screening of separated lines. It was found that the usual form of the dislocation force had to be modified so as to include an additional net attractive force when entropic effects were taken into account.

Finite-Temperature Dislocation Interactions. J.M.Rickman, R.LeSar: Physical Review B, 2001, 64[9], 094106 (8pp)