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A Compact Very Low Noise DC-SQUID Magnetometer

  • R. Cantor
  • T. Ryhänen
  • H. Seppä
Part of the Springer Proceedings in Physics book series (SPPHY, volume 64)

Abstract

We have designed and fabricated a very low noise integrated dc Superconducting QUantum Interference Device (SQUID) magnetometer on a 4×4 mm2 chip. The white flux noise at 1 kHz is \(6 \times {10^{ - 7}}{\Phi _0}/\sqrt {Hz} \). This corresponds to a flux density noise of \(3.4\;fT/\sqrt {Hz} \) and a coupled energy resolution of 32 h. The 1/f noise corner frequency is 10 Hz and the 1/f flux noise at 1 Hz is \(2 \times {10^{ - 6}}{\Phi _0}/\sqrt {Hz} \).

Keywords

Superconducting QUantum Interference Device Input Coil Flux Noise Applied Flux Junction Shunt Resistance 
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-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • R. Cantor
    • 1
  • T. Ryhänen
    • 2
  • H. Seppä
    • 2
  1. 1.Institut BerlinPhysikalisch-Technische BundesanstaltBerlin 10Fed. Rep. of Germany
  2. 2.Metrology Research InstituteHelsinki University of Technology and Technical Research Centre of FinlandEspooFinland

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