Superconducting Quantum Point Contacts and Other Mesoscopic Josephson Junctions

  • Carlo Beenakker
  • Henk van Houten
Conference paper


Superconductor-two-dimensional electron gas-superconductor (S-2DEG-S) junctions derive much of their recent interest from potential applications in a three-terminal transistor based on the Josephson effect. The ability of an electric field to penetrate into a 2DEG would allow one to modulate the critical supercurrent of the Josephson junction by means of the voltage on a gate electrode, in much the same way as one can modulate the conductance of a field-effect transistor in the normal state. Of particular interest are junctions which show a quantum-size effect on the conductance, since one would then expect a relatively large field-effect on the critical current [1]. Quantum-size effects on the conductance have been studied extensively in nanostructures such as quantum point contacts and quantum dots. The corresponding effects on the Josephson current have received less attention.


Critical Current Josephson Junction Resonant Tunneling Tunnel Barrier Josephson Effect 
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Copyright information

© Springer Japan 1992

Authors and Affiliations

  • Carlo Beenakker
  • Henk van Houten
    • 1
  1. 1.Philips Research LaboratoriesEindhovenThe Netherlands

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