Non-Arrhenius Conductivity in a Driven System of Interacting Lattice Gas
A Monte Carlo simulation is used to study the conductivity of an interacting lattice gas in presence of a linear gradient field. The conductivity is evaluated in the steady state although the system is not in thermal equilibrium. Effects of the concentration of the caniers and the temperature are analyzed. The conductivity shows a nonmonotonic dependence on the concentration and a non-Anhenius dependence over a wide range of temperatures.
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