Patent ID: 6023072
Filing Date: 2000-02-08
Classification: H01L,Y10S

Abstract:
A Josephson junction comprising a laminar structure having:(a) a substrate;(b) a first superconductive layer deposited on the substrate;(c) a non-superconductive layer deposited on the first superconductive layer; and(d) a second superconductive layer deposited on the non-superconductive layer;wherein the laminar structure has three segments, a first planar segment, a second planar segment, and a ramp segment connecting the two planar segments at an ascent angle thereto;wherein the layers are of substantially uniform thickness in the three segments, the substrate being thinner in the second planar segment than in the first planar segment, and the substrate having a constantly-decreasing thickness in the ramp segment; andwherein both superconductive layers and the non-superconductive layer are deposited in-situ and are epitaxial with a c-axis in a direction substantially normal to the first and second planar segments.