| 摘要 |
The invention relates to an electronic component with a Josephson junction and to a production method. The component comprises a substrate (1.1) with at least one step edge in the substrate surface and a layer which is arranged on said substrate and which is made of a high-temperature superconductive material (1.4). The layer has a grain boundary (1.5) at the step edge, said grain boundary forming the one or two weak link(s) of the Josephson junction. According to the invention, the a- and/or b-crystal axes on the plane of the high-temperature superconductive layer are made to run perpendicularly to the grain boundary with a maximum tolerance of 10° on both sides of the step edge by texturing the substrate and/or at least one buffer layer arranged between the substrate and the high-temperature superconductive layer. This can be technically implemented by growing the HTSC layer in a graphoepitaxial manner for example. By orienting the same crystal axis perpendicularly to the step edge on each side of the step edge, a maximum supercurrent can flow across the grain boundary induced by the step edge and thus across the Josephson junction. |
