Monte Carlo calculation of the current-voltage characteristics of a two-dimensional lattice Coulomb gas

Article

关键词: KOSTERLITZ-THOULESS TRANSITION;    PHASE-TRANSITIONS;    2-DIMENSIONAL SUPERFLUIDS;    XY-MODEL;    RENORMALIZATION;    SUPERCONDUCTORS;    TEMPERATURE;    DYNAMICS;    FILMS;   

DOI  :  10.1103/PhysRevB.53.8566

来源: SCIE

【 摘 要 】

We have studied the nonlinear current-voltage characteristic of a two-dimensional lattice Coulomb gas by Monte Carlo simulation. We present three different determinations of the power-law exponent a(T) of the nonlinear current-voltage characteristic, V similar to(a(T)+1). The determinations rely on both equilibrium and nonequilibrium simulations. We find good agreement between the different determinations, and our results also agree closely with experimental results for Hg-Xe thin-film superconductors and for certain single crystal thin-film high-temperature superconductors.

【 授权许可】

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