Two‐dimensional computer analysis of current‐phase relations in microbridge josephson junction

Abstract

AbstractIn the microbridge Josephson junction, the current‐phase relation is obtained by solving simultaneously the Gintzburg‐Landau equation and Maxwell equation. The optimum geometry of the microbridge which produces a large Josephson effect is clarified. Unlike other Josephson junctions, the microbridge Josephson junction is of the strong‐weak‐strong superconducting structure which is generated by the current flow. A large Josephson effect is obtained when the bridge length is less than the coherence length and when the bridge width is less than the magnetic penetration depth, In and Sn are superior to Cd and Al as superconducting materials.