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Monitoring of the characteristics of Josephson microcircuits used in standards of the volt

  • Electromagnetic Measurements
  • Published:
Measurement Techniques Aims and scope

Abstract

The results of investigations of microcircuits based on Nb−AlOx−Nb Josephson tunnel junctions, used in modern standards of the volt, are presented. The measured static characteristics of the microcircuits, their temperature dependences in the 4.2–1.7 K temperature range, the frequency response in the 54–80 GHz frequency band, and the attenuation in a microstrip line are used to optimize the construction of microcircuits and their manufacturing technology at PTB (Physikalisch-Technische Bundesanstalt, Germany). It is shown that microcircuits of a new construction, made using a modified PTB technology, have better characteristics and can be used as the unit of voltage at the level of both 1 V and 10 V.

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Authors and Affiliations

  1. (Russia)

    I. Ya. Krasnopolin & I. Kohlmann

  2. (Germany)

    F. Müller, Yu. Nimaier & F. -V. Dunnshede

Authors
  1. I. Ya. Krasnopolin
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  2. I. Kohlmann
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  3. F. Müller
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  4. Yu. Nimaier
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  5. F. -V. Dunnshede
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Additional information

Translated from Izmeritel'naya Tekhnika, No. 11, pp. 43–48, November, 1997.

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Krasnopolin, I.Y., Kohlmann, I., Müller, F. et al. Monitoring of the characteristics of Josephson microcircuits used in standards of the volt. Meas Tech 40, 1089–1095 (1997). https://doi.org/10.1007/BF02505131

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  • DOI: https://doi.org/10.1007/BF02505131

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