JOSEPHSON- TRANSITION SUPER-CONDUCTING DEVICE Russian patent published in 2009 - IPC H01L39/22 

FIELD: physics, measurements.

SUBSTANCE: invention relates to cryogenic devices and can be used in measuring instruments, radio communication and data processing hardware operated at low temperatures. Josephson-transition superconducting device substrate has a weak-bond area formed as a thin-film FNF-structure connected with superconductor electrodes. Aforesaid thin-film structure is made up of F layers of ferromagnetic material with magnetisation directions lying in the plane of structure, a layer N of normal metal being arranged between aforesaid ferromagnetic metal F layers for them to turn said magnetisation directions relative each other. Superconducting electrodes are connected to opposite lateral sides of aforesaid FNF-structure.

EFFECT: higher-efficiency control over Josephson-transition critical current by external magnetic field due to provision of several independent channels for aforesaid critical current to pass through.

8 cl, 6 dwg