Abstract
The nonlinear one-dimensional dynamics of diatomic adatom clusters on an atomically grooved crystal surface is investigated by a numerical simulation method. It is shown that for initial conditions such that a given dynamic Hamiltonian of the system possesses chaotic behavior in phase space, the dynamical chaos is manifested in the coordinate space as diffusive motion of the cluster. The process investigated is fundamentally different from ordinary thermal diffusion and can apparently be manifested at low temperatures.
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