Microwave Characteristics Of All High-Tc Edge Junctions

We have fabricated the edge junction by using epitaxial multilevel deposition technique. The dc and ac Josephson effects have been observed in liquid nitrogen temperatures. The current-voltage characteristics of the junction are nonhysteretic and have well-defined critical current. The dynamic resistances above the critical current are large and independent of bias current. The dependence of height of the microwave induced steps on the microwave power consists with the prediction of the resistively-shunted-junction model with dc and radio-frequency current bias.