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Driven diffusion in the two-dimensional lattice Coulomb gas: A model for flux flow in superconducting networks

Jong-Rim Lee, S. Teitel

DOI 10.1103/PhysRevB.50.3149 · Physical Review B

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Abstract

We carry out driven-diffusion Monte Carlo simulations of the two-dimensional classical lattice Coulomb gas in an applied uniform electric field, as a model for vortex motion due to an applied dc current in a periodic superconducting network. A finite-size version of dynamic scaling is used to extract the dynamic critical exponent z, and infer the nonlinear response at the transition temperature. We consider the Coulomb gases f=0 and f=1/2, corresponding to a superconducting network with an applied transverse magnetic field of zero, and one-half flux quantum per unit cell, respectively.

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