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Dissipation in a Superconducting Indium Wire

  • L. K. Sisemore
  • K. J. Carroll
  • P. T. Sikora

Abstract

A superconducting device which has evolved into several useful forms is the persistatron.1 Recently the persistatron has been modified into a coupled superconducting circuit in which the two branches of the device are deliberately made interacting.2 This multiply connected, self-interacting superconducting circuit is referred to as a “coupled persistatron.” A current i s in a coil of inductance L produces a field H s at a wire centered in the coil. Thus a transport current i w carried by the wire is influenced by i s . The behavior of the system, that is, the apportionment of the currents i s and i w between the two branches, can be predicted by using only the princples that (a) a dissipation-producing flow apportionment is dynamically unstable against a lossless apportionment whenever the latter is possible for a given total current, and (b) the quantization of system energy due to flux conservation when the multiply connected system is in the superfluid state prevents any further current changes once a lossless flow pattern has been attained. Previous experimental results in this laboratory for i s and i w as a function of input current I = i s + i w agree very well with the theoretical predictions.2

Keywords

Wire Diameter Previous Experimental Result Threshold Point Longitudinal Field Axial Wire 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    M.J. Buckingham, in Proc. 5th Intern. Conf. Low Temperature Physics and Chemistry, University of Wisconsin Press, Madison (1958), p. 229.Google Scholar
  2. 2.
    P.T. Sikora, K.J. Carroll, L.K. Sisemore, and J.E. Nicholson, Cryogenics 10 233 (1970).CrossRefGoogle Scholar
  3. 3.
    F.B. Silsbee, Bull. Bur. Stand. 14, 301 (1918).CrossRefGoogle Scholar
  4. 4.
    R.W. Shaw, D.E. Mapother, and D.C. Hopkins, Phys. Rev. 120, 88 (1960).ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • L. K. Sisemore
    • 1
  • K. J. Carroll
    • 1
  • P. T. Sikora
    • 1
  1. 1.University of OklahomaNormanUSA

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