Josephson Ground Plane Edge Junction Regulator
Original Publication Date: 1981-Jul-01
Included in the Prior Art Database: 2005-Feb-11
In Josephson circuits, regulator junctions are used together with the junctions used for the logic circuits. However, if the same current density is used in the regulator junctions as is used in the logic junctions, the area required for the regulators is unnecessarily large. In order to avoid this, the Nb ground plane is used as a base electrode for edge junction regulators, the regulator current density then being independent of the logic current density. Independent control of the current density would come primarily from control of the edge angle, a steeper edge angle giving a higher current density. The tunnel oxidation and counterelectrode steps could be common with the logic junctions.