HIGH-TEMPERATURE SUPERCONDUCTING JOSEPHSON JUNCTION, SUPERCONDUCTING ELECTRONIC DEVICE HAVING THE SAME AND METHOD FOR FORMING HIGH-TEMPERATURE SUPERCONDUCTING JOSEPHSON JUNCTION

摘要

A high-temperature superconducting Josephson junction having two superconductors and, sandwiched between them, a barrier layer, wherein the two superconductors each contain one or more elements selected from among Y, La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu, one or more elements selected from among Ba, Sr and Ca, Cu and oxygen, each contain at least five elements, and are different from each other in their composition, or wherein the barrier layer (5) contains one or more elements selected from among La, Nd, Sm and Eu, and one or more elements selected from among Y, Gd, Dy, Ho, Er, Tm, Yb and Lu.