High Critical Temperature Superconductor Josephson Junctions and Other Exotic Structures

Abstract

Who would have imagined a supercurrent flowing between two phase coherent electrodes at 100 K? Josephson junctions (JJs) based on high temperature superconductors (HTS) can actually sustain large supercurrents at such unprecedented high temperatures. They are as well the first example of a wide class of devices based on exotic materials. In this chapter, we examine the properties of different types of HTS-based junctions and discuss notions on fabrication which is useful to classify junction properties.