DYNAMICAL INDUCTION OF S-WAVE COMPONENT IN D-WAVE SUPERCONDUCTOR DRIVEN BY THERMAL FLUCTUATIONS

We investigated the mutual induction effects between the d-wave and th e s-wave components of order parameters due to superconducting fluctua tion above the critical temperatures and calculated its contributions to paraconductivity and excess Hall conductivity based on the two-comp onent stochastic TDGL equation. It is shown that the coupling of two c omponents increases paraconductivity while it decreases excess Hall co nductivity compared to the cases when each component fluctuates indepe ndently. We also found the singular behavior in the paraconductivity a nd the excess Hall conductivity dependence on the coupling parameter w hich is consistent with the natural restriction among the coefficients of gradient terms.