Primary thermometry in the intermediate Coulomb blockade regime

A.V. Feshchenko (Corresponding Author), M. Meschke, David Gunnarsson, Mika Prunnila, L. Roschier, J.S. Penttilä, J.P. Pekola

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    Abstract

    We investigate Coulomb blockade thermometers (CBT) in an intermediate temperature regime, where measurements with enhanced accuracy are possible due to the increased magnitude of the differential conductance dip. Previous theoretical results show that corrections to the half width and to the depth of the measured conductance dip of a sensor are needed, when leaving the regime of weak Coulomb blockade towards lower temperatures. In the present work, we demonstrate experimentally that the temperature range of a CBT sensor can be extended by employing these corrections without compromising the primary nature or the accuracy of the thermometer.
    Original languageEnglish
    Pages (from-to)36-44
    Number of pages9
    JournalJournal of Low Temperature Physics
    Volume173
    Issue number1-2
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

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    Keywords

    • Coulomb blockade
    • thermometry
    • tunnel junctions

    Cite this

    Feshchenko, A. V., Meschke, M., Gunnarsson, D., Prunnila, M., Roschier, L., Penttilä, J. S., & Pekola, J. P. (2013). Primary thermometry in the intermediate Coulomb blockade regime. Journal of Low Temperature Physics, 173(1-2), 36-44. https://doi.org/10.1007/s10909-013-0874-x