Microwave Emission from Coupled Josephson Junctions

  • T. F. Finnegan
  • S. Wahlstent


When a finite dc voltage V dc is established across a Josephson junction an oscillating supercurrent
$${{I}_{dc}}\,=\,{{I}_{1}}\,\sin ({{\varphi }_{0\,}}+\frac{2e{{V}_{dc}}}{h}t)$$
can be made to flow. Here I 1 is the maximum dc Josephson current and ϕ 0 is a constant. This ac supercurrent is most readily observed when the junction is coupled to a resonant structure. For a tunnel junction the junction itself forms a resonant cavity with a fundamental resonance frequency \({{\omega }_{R}}\,=\,\pi \bar{c}/2L\) determined by the phase velocity \(\bar{c}\) c in the barrier region and by the width of the wider film L.


Josephson Junction Tunnel Junction Local Oscillator Microwave Emission Couple Junction 


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  1. 1.
    I.K. Yanson, V.M. Svistunov, and I.M. Dmitrenko, Zh. Eksperim. Teor. Fiz. 48, 976 (1965)Google Scholar
  2. I.K. Yanson, V.M. Svistunov, and I.M. Dmitrenko,[Soviet Phys.—JETP21,650 (1965)].ADSGoogle Scholar
  3. 2.
    D.N. Langenberg, D.J. Scalapino, B.N. Taylor, and R.E. Eck, Phys. Rev. Lett. 15, 294 (1965).ADSCrossRefGoogle Scholar
  4. 3.
    M.J. Stephen, Phys. Rev. Lett. 21, 1629 (1968);ADSCrossRefGoogle Scholar
  5. M.J. Stephen, Phys. Rev. 182, 531 (1969).ADSCrossRefGoogle Scholar
  6. 4.
    A.J. Dahm, A. Denenstein, D.N. Langenberg, W.H. Parker, D. Rogovin, and D.J. Scalapino, Phys. Rev. Lett. 22, 1416 (1969).ADSCrossRefGoogle Scholar
  7. 5.
    J.T. Chen, T.F. Finnegan, and D.N. Langenberg, Physica 55, 413 (1971).ADSCrossRefGoogle Scholar
  8. 6.
    O.H. Soerensen, T.F. Finnegan, and N.F. Pedersen, Appl. Phys. Lett. 22, 129 (1973).ADSCrossRefGoogle Scholar
  9. 7.
    T.D. Clark, Phys. Lett. 27A, 585 (1968).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • T. F. Finnegan
    • 1
  • S. Wahlstent
    • 1
  1. 1.Institute for Basic StandardsNational Bureau of StandardsUSA

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