Investigation of uncertainty components in Coulomb blockade thermometry

O.M. Hahtela, M. Meschke, A. Savin, David Gunnarsson, Mika Prunnila, J.S. Penttilä, L. Roschier, M. Heinonen, Antti Manninen, J.P. Pekola

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    5 Citations (Scopus)


    Coulomb blockade thermometry (CBT) has proven to be a feasible method for primary thermometry in every day laboratory use at cryogenic temperatures from ca. 10 mK to a few tens of kelvins. The operation of CBT is based on single electron charging effects in normal metal tunnel junctions. In this paper, we discuss the typical error sources and uncertainty components that limit the present absolute accuracy of the CBT measurements to the level of about 1 % in the optimum temperature range. Identifying the influence of different uncertainty sources is a good starting point for improving the measurement accuracy to the level that would allow the CBT to be more widely used in high-precision low temperature metrological applications and for realizing thermodynamic temperature in accordance to the upcoming new definition of kelvin.
    Original languageEnglish
    Title of host publicationTemperature: Its Measurement and Control in Science and Industry
    Subtitle of host publicationProceedings of the Ninth International Temperature Symposium
    EditorsChristopher W. Meyer
    PublisherAmerican Institute of Physics (AIP)
    ISBN (Print)978-0-7354-1178-4
    Publication statusPublished - 2013
    MoE publication typeA4 Article in a conference publication
    Event9th International Temperature Symposium, ITS 2012 - Los Angeles, CA, United States
    Duration: 19 Mar 201223 Mar 2012

    Publication series

    SeriesAIP Conference Proceedings


    Conference9th International Temperature Symposium, ITS 2012
    Abbreviated titleITS 2012
    Country/TerritoryUnited States
    CityLos Angeles, CA


    • coulomb blockade thermometry
    • measurement uncertainty
    • primary thermometer


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