| 摘要 |
<p>PURPOSE:To improve superconductive critical current density at a contact part by providing a recess in an oxide superconductor so as to fill a metal superconductor in the recess to allow superconductive electrons which has flowed along the layer of the oxide superconductor to directly flow into the metal superconductor. CONSTITUTION:The first superconductor 12 consisting of oxide superconductor YBCO which has a layer structure parallel with a substrate 11 is 500nm thick and a hole of 450nm in depth is bored in a part of it. A contact hole is bored in an insulation film 13 and the second superconductor 14 consisting of metal superconductor niobium contacts with the first superconductor 12 at a contact hole part. By making taper at the hole of the first superconductor 12 or boring plural holes, the contact area in the horizontal direction can be widened and the critical current of a superconductive contact can be further enhanced.</p> |
