Towards a dc SQUID read-out for the normal metal hot-electron microbolometer

M. Tarasov (Corresponding Author), S. Gudoshnikov, A. Kalabukhov, Heikki Seppä, Mikko Kiviranta, L. Kuzmin

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)


    A prototype of SQUID read-out for current measurements at the output of a normal metal hot-electron microbolometer has been developed and tested. The system is based on serial VTT dc SQUID and input μ-metal core solenoid transformer. The achieved current resolution is 300 fA/Hz1/2. Johnson noise of metal resistor and shot noise of tunnel junction were used for current calibration of SQUID read-out. The current noise spectra of 35 k SIN tunnel junction measured at different bias voltages are presented.
    Original languageEnglish
    Pages (from-to)161-165
    JournalPhysica C: Superconductivity and its Applications
    Issue number1-4
    Publication statusPublished - 2002
    MoE publication typeA1 Journal article-refereed


    • dc SQUID
    • SIN tunnel junction
    • SQUID femtoamperemeter


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