JETP Letters: issues online

$The time-dependent Ginzburg-Landau equation with a complex relaxation constant y— y0(\ — ie) is used to analyze distinctive features in the properties of ID normal-metal-superconductor contacts near Tc. The current-voltage characteristics of the contact are asymmetric in this model. The asymmetry depends strongly on ΓTc and also the sign of e. A value e^O has been invoked previously to explain a change in the sign of the Hall conductivity of a high Tc superconductor in the mixed state. The results found in the present study indicate that it may be possible to determine the absolute value and the sign of e from the temperature dependence of the asymmetry of the current-voltage characteristics of normal-metal-high-Γ,-superconductor contacts near Tc. This capability would be of importance for, in particular, interpreting Hall-effect experiments. © 1994 American Institute of Physics.$

The time-dependent Ginzburg-Landau equation with a complex relaxation constant y— y₀(\ — ie) is used to analyze distinctive features in the properties of ID normal-metal-superconductor contacts near T_c. The current-voltage characteristics of the contact are asymmetric in this model. The asymmetry depends strongly on ΓT_c and also the sign of e. A value e^O has been invoked previously to explain a change in the sign of the Hall conductivity of a high T_c superconductor in the mixed state. The results found in the present study indicate that it may be possible to determine the absolute value and the sign of e from the temperature dependence of the asymmetry of the current-voltage characteristics of normal-metal-high-Γ,-superconductor contacts near T_c. This capability would be of importance for, in particular, interpreting Hall-effect experiments. © 1994 American Institute of Physics.