Fabrication and Noise Properties of NbN Nanobridge dc Superconducting QUantum Interference Devices (SQUIDs)

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Description

We have fabricated two types of NbN nanobridge dc Superconducting QUantum Interference Devices (SQUIDs). From the analyses of the response to magnetic field, it is found that the current-phase relationship for the planar-type nanobridge and the nanobridge fabricated by field evaporation is close to sinusoidal. For V\gtrsim720 μV, The spectral densities of the voltage noise show linear dependence on the voltage for the SQUIDs with nanobridges whose length is about the superconducting coherence length of NbN. The SQUIDs with nanobridges with lengths of several times the NbN coherence length exhibit parabolic voltage dependence.

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Details 詳細情報について

  • CRID
    1570854177387568128
  • NII Article ID
    110003902290
  • NII Book ID
    AA10457675
  • Text Lang
    en
  • Data Source
    • CiNii Articles

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