Effect of on-chip filter on Coulomb blockade thermometer

L. Roschier, David Gunnarsson, M. Meschke, A. Savin, J.S. Penttilä, Mika Prunnila

    Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

    3 Citations (Scopus)


    Coulomb Blockade Thermometer (CBT) is a primary thermometer based on electric conductance of normal tunnel junction arrays. One limitation for CBT use at the lowest temperatures has been due to environmental noise heating. To improve on this limitation, we have done measurements on CBT sensors fabricated with different on-chip filtering structures in a dilution refrigerator with a base temperature of 10 mK. The CBT sensors were produced with a wafer scale tunnel junction process. We present how the different on-chip filtering schemes affect the limiting saturation temperatures and show that CBT sensors with proper on-chip filtering work at temperatures below 20 mK and are tolerant to noisy environment.
    Original languageEnglish
    Article number052029
    JournalJournal of Physics: Conference Series
    Issue number5
    Publication statusPublished - 2012
    MoE publication typeA4 Article in a conference publication
    Event26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China
    Duration: 10 Aug 201217 Aug 2012
    Conference number: 26


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