THE RESPONSIBILITY OF HIGH Tc SUPERCONDUCTOR DETECTOR

Abstract

The V-I characteristics of Y-Ba-Cu-O device is different from that of conventional low Tc Josephson junction. This enables us to use the small critical current device as an electromagnetic radiation detector. Experiment shows that the smaller the critical current is, the greater the dynamic resistance and the higher the voltage responsibility to radiation power. When the critical current is adjusted down to zero but the V-I curve is still obviously nonlinear, the device will have highest responsibility.