Current-voltage scaling of chiral and gauge-glass models of two-dimensional superconductors
نویسنده
چکیده
The scaling behavior of the current-voltage characteristics of chiral and gauge-glass models of disordered superconductors, are studied numerically, in two dimensions. For both models, the linear resistance is nonzero at finite temperatures and the scaling analysis of the nonlinear resistivity is consistent with a phase transition at T50 temperature characterized by a diverging correlation length j}TT and thermal critical exponent nT . The values of nT , however, are found to be different for the chiral and gauge-glass models, suggesting different universality classes, in contrast to the result obtained recently in three dimensions. @S0163-1829~98!07341-X#
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تاریخ انتشار 1998