
doi: 10.1117/12.48972
The reasons for the failure to develop a successful Josephson tunnel junction made from high-temperature superconducting cuprates is discussed. The difficulties in developing a theoretical analysis of even simple-to-make cuprate Josephson devices are pointed out. The development of alternative Josephson devices based on the fabrication of engineered microbridges is addressed, and an overview is given of successful YBCO microbridges. Emphasis is given to focused ion beam and step-edge microbridges.
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