Stable cryogenic vacuum capacitor for single-electron charging experiments

  title={Stable cryogenic vacuum capacitor for single-electron charging experiments},
  author={Gerd-Dietmar Willenberg and Peter Warnecke},
  journal={IEEE Trans. Instrumentation and Measurement},
For use in our single-electron charging experiment, a novel cryogenic vacuum capacitor has been developed which is superior to the previous parallel-plate design. Due to its coaxial design consisting of a long cylindrical center electrode and a shorter cylindrical ring electrode, it is inherently stable against mechanical vibrations and thermal cycling. Electrical insulation is achieved by the exclusive use of sapphire, which promises extremely low leakage currents. 

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