SOLID-ON-SOLID RULES AND MODELS FOR NONEQUILIBRIUM GROWTH IN 2 + 1 DIMENSIONS

On the basis of a detailed stochastic simulation we find that nonequilibrium growth in 2+1 dimensions, within the simple solid-on-solid approximation, is surprisingly rich with its dynamical universality depending sensitively on the local atomistic relaxation rules of the growth model. We establish connections between our computed dynamical growth exponents for various physically plausible local growth models with those given by a recently proposed fourth-order nonlinear continuum differential equation.