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CR72 - SQUID-based Thermometers

SQUID-based Thermometers

 
Jörn Beyer, Alexander Kirste and Thomas Schurig
 
Physikalisch-Technische Bundesanstalt (PTB)
Abbestr. 2-12, D-10587 Berlin, Germany
 
Abstract — This article reviews the application of SQUIDs in low-temperature thermometry. Special focus is given to state-of-the-art noise thermometers such as the current sensing noise thermometer (CSNT) and the magnetic field fluctuation thermometer (MFFT). Today, SQUID noise thermometers are no longer a domain of metrology institutes. Practical versions of the CSNT and the MFFT are powerful tools for relative primary thermometry in the low-temperature range down to sub-millikelvin temperature.
 
Keywords (Index Terms) — Low-temperature thermometry, SQUID, noise thermometer.
 
IEEE/CSC & ESAS SUPERCONDUCTIVITY NEWS FORUM (global edition), July 2016. 
Received June 20, 2016; Accepted July 28, 2016. Reference No. CR72; Category 4. 
This is an abbreviated version of a chapter intended for publication in the next edition of Encyclopedia of Applied Physics, Copyright © 1999-2014 by John Wiley and Sons, Inc., Online ISBN: 9783527600434, DOI: 10.1002/3527600434, Reproduced with permission.