The tunneling cryotron—A superconductive logic element based on electron tunneling

This paper discusses the operation of a new superconductive logic element. In geometry, the element resembles the in-line cryotron and like the in-line cryotron exhibits gains of greater than unity when biased. The gate, however, is a Josephson junction. The two states, zero-voltage and "resistive," of the junaction are both superconducting states, one being a pair tunneling state, the other a single-particle tunneling state. The transition from one state to the other takes place in less than 800 ps (the resolving time of the apparatus). If used in a flip-flop circuit in a current steering mode, current transfer times are calculated to be less than 200 ps.

[1]  B. Josephson.  Possible new effects in superconductive tunnelling , 1962 .

[2]  M. D. Fiske,et al.  Superconductive tunneling , 1964 .

[3]  J. Clarke,et al.  A superconducting galvanometer employing Josephson tunnelling , 1966 .

[4]  W. J. Haas,et al.  Some experiments on a supraconductive alloy in a magnetic field , 1935 .

[5]  J. Lambe,et al.  Macroscopic quantum interference in superconductors , 1965 .

[6]  Philip W. Anderson,et al.  PROBABLE OBSERVATION OF THE JOSEPHSON SUPERCONDUCTING TUNNELING EFFECT , 1963 .

[7]  J. Matisoo,et al.  SUBNANOSECOND PAIR‐TUNNELING TO SINGLE‐PARTICLE TUNNELING TRANSITIONS IN JOSEPHSON JUNCTIONS , 1966 .

[8]  A. E. Brennemann,et al.  Delay times for switching in-line cryotrons , 1963 .

[9]  R. A. Ferrell,et al.  SELF-FIELD LIMITING OF JOSEPHSON TUNNELING OF SUPERCONDUCTING ELECTRON PAIRS , 1963 .

[10]  High-speed superconductive switching element suitable for two-dimensional fabrication , 1959 .

[11]  J. E. Zimmerman,et al.  Macroscopic Quantum Interference Effects through Superconducting Point Contacts , 1966 .

[12]  T. Faber,et al.  The phase transition in superconductors II. Phase propagation above the critical field , 1953, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[13]  A. Pippard.  IXXI. Kinetics of the phase transition in superconductors , 1950 .

[14]  A. E. Brennemann,et al.  Dynamic operation of the in-line cryotron in bistable circuits , 1964 .

[15]  D. Buck,et al.  The Cryotron-A Superconductive Computer Component , 1956, Proceedings of the IRE.

[16]  Vinay Ambegaokar,et al.  Tunneling between superconductors , 1963 .

[17]  N. H. Meyers,et al.  Inductance in Thin-Film Superconducting Structures , 1961, Proceedings of the IRE.

[18]  John Lambe,et al.  QUANTUM INTERFERENCE EFFECTS IN JOSEPHSON TUNNELING , 1964 .

[19]  Brian D. Josephson,et al.  Supercurrents through barriers , 1965 .

[20]  A. E. Brennemann.  The in-line cryotron , 1963 .