Influence of device non-uniformities on the accuracy of Coulomb blockade thermometry

Jukka P. Pekola (Corresponding Author), Eemil Praks, Nikolai Yurttagül, Bayan Karimi (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

Abstract

We investigate temperature uncertainty of Coulomb blockade thermometer (CBT) arising from inevitable non-uniformities in tunnel junction arrays. The corrections are proportional to the junction resistance variance in the linear operation regime and this result holds approximately also beyond this originally studied high temperature range. We present both analytical and numerical results, and discuss briefly their implications on achievable uniformity based on state-of-the-art fabrication of sensors.

Original languageEnglish
Article number045009
Number of pages9
JournalMetrologia
Volume59
Issue number4
Early online date14 Jul 2022
DOIs
Publication statusPublished - 1 Aug 2022
MoE publication typeA1 Journal article-refereed

Keywords

  • Coulomb blockade
  • low temperature
  • non-uniformity errors
  • thermometry

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