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Microwave Emission from Coupled Josephson Junctions

  • T. F. Finnegan
  • S. Wahlstent

Abstract

When a finite dc voltage V dc is established across a Josephson junction an oscillating supercurrent
$${{I}_{dc}}\,=\,{{I}_{1}}\,\sin ({{\varphi }_{0\,}}+\frac{2e{{V}_{dc}}}{h}t)$$
(1)
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.

Keywords

Josephson Junction Tunnel Junction Local Oscillator Microwave Emission Couple Junction 
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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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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