EFFECTIVE RESPONSE IN RANDOM MIXTURES OF LINEAR AND NONLINEAR CONDUCTORS

A simple self-consistent mean-field theory for the effective nonlinear response in random mixtures of linear and strongly nonlinear conductors is proposed. Results are in much better agreement with published simulation data than all the previously proposed approximations. The theory thus represents a far superior approximation to the Clausius-Mossotti approximation and effective-medium approximation previously proposed.