The development of primary thermometers, using disordered tunneling junction arrays

Yabin Yu, Wan Ki Chow

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)


An important problem in the application of nanometersized-junction arrays to Coulomb blockade thermometry (CBT) is dispersion in the junction parameters. The performance of CBT is investigated by calculating two primary thermometric quantities, half-width V1/2and the third zero-crossing voltage V3,0of the I-V curve, for disordered junction arrays. The results show that the fluctuations of the two quantities among disordered parallel-connected array groups are considerably reduced in comparison to the case of individual one-dimesional (1D) disordered arrays. If the inhomogeneity of the junction is assumed to be ±20%, among the simulated samples of disordered array groups the relative fluctuation of V1/2and V3,0is only about 0.1%, and the mean values of V1/2and V3,0deviate positively from the ideal value in the uniform junction array by 3 and 4%, respectively. Therefore, the performance of CBT can be improved by connecting the arrays to form junction array groups, and high-quality CBT device can be made from the array group.
Original languageEnglish
Pages (from-to)79-84
Number of pages6
JournalSensors and Actuators, A: Physical
Issue number1
Publication statusPublished - 4 Oct 2004


  • Coulomb blockade thermometry
  • Disordered
  • Junction arrays

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Instrumentation


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