We report four-point IV measurements of the c-axis conductivity of mesa structures of 2212-BSCCO, using a system with sub-mus resolution along with multi-level pulses. These allow a test to be made for the presence of nonequilibrium effects. Our results suggest simple heating alone is important in measurements of this kind. (C) 2003 Elsevier Science B.V. All rights reserved.
- intrinsic Josephson junctions
- IV characteristics