THERMOELECTRIC EFFECT IN HIGH-T-C SUPERCONDUCTORS - THE ROLE OF DENSITY-OF-STATES FLUCTUATIONS

We study the effect of the density-of-states (DOS) fluctuations on the thermoelectric coefficient of a highly anisotropic superconductor abo ve the critical temperature. It is shown that it is the DOS contributi on which gives rise to the leading correction to the thermoelectric co efficient, in spite of previous results where only the Aslamazov-Larki n term was taken into account. This conclusion is valid for an arbitra ry impurity concentration. (C) 1997 American Institute of Physics.