CONTROL OF FLOW ACROSS A WEAK LINK IN SUPERCONDUCTIVE AND SUPERFLUID DEVICES

摘要

A method and means for influencing flow in a superconductive or superfluid device by introducing a control flow into a region interposed between two regions characterized by internal flow in the form of superflow. A superconductive device is presented comprising a superconductive region capable of emitting current and a superconductive region capable of receiving current, which regions are separated by an interposed region, not in a superconductive state but capable of transferring current between the two regions. When control current (AC or DC) is introduced into the interposed region from an external source, an interaction takes place between the control current and the main current being transferred through the interposed region and influences the main current in a manner which is described. An equivalent superfluid device is also discussed for electrically neutral fluid flow across a region separating two regions characterized by internal superflow.