A femtoamperemeter based on a superconducting quantum interferometer and a bulk transformer

M.A. Tarasov, A.S. Kalabukhov, S.A. Kovtonyuk, I.L. Lapitskaya, S.A. Gudoshnikov, Mikko Kiviranta, O.V. Snigirev, L.S. Kuzmin, Heikki Seppä

    Research output: Contribution to journalArticleScientificpeer-review

    2 Citations (Scopus)

    Abstract

    A femtoamperemeter based on a superconducting quantum interference device (SQUID) with a planar on-chip gradiometric transformer and an additional volume cryogenic transformer on a toroidal ferromagnetic core is developed, fabricated, and experimentally studied. The conditions for the optimum matching of the SQUID to the signal source are analyzed. It is demonstrated that the conditions for the optimum matching and high coupling coefficient are satisfied in the transformer with a ferromagnetic core. The excess noise introduced by the core is studied experimentally. It is shown that double shielding using superconducting and ferromagnetic shields makes it possible to lower the cutoff frequency of the excess noise to less than 1 kHz.
    Original languageEnglish
    Pages (from-to)1404-1409
    Number of pages6
    JournalJournal of Communications Technology and Electronics
    Volume48
    Issue number12
    Publication statusPublished - 2003
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    SQUIDs
    transformers
    Interferometers
    Cutoff frequency
    Shielding
    Cryogenics
    interference
    coupling coefficients
    cryogenics
    shielding
    cut-off
    chips

    Cite this

    Tarasov, M. A., Kalabukhov, A. S., Kovtonyuk, S. A., Lapitskaya, I. L., Gudoshnikov, S. A., Kiviranta, M., ... Seppä, H. (2003). A femtoamperemeter based on a superconducting quantum interferometer and a bulk transformer. Journal of Communications Technology and Electronics, 48(12), 1404-1409.
    Tarasov, M.A. ; Kalabukhov, A.S. ; Kovtonyuk, S.A. ; Lapitskaya, I.L. ; Gudoshnikov, S.A. ; Kiviranta, Mikko ; Snigirev, O.V. ; Kuzmin, L.S. ; Seppä, Heikki. / A femtoamperemeter based on a superconducting quantum interferometer and a bulk transformer. In: Journal of Communications Technology and Electronics. 2003 ; Vol. 48, No. 12. pp. 1404-1409.
    @article{e7e96d70b1f24a5394793e91582bcb98,
    title = "A femtoamperemeter based on a superconducting quantum interferometer and a bulk transformer",
    abstract = "A femtoamperemeter based on a superconducting quantum interference device (SQUID) with a planar on-chip gradiometric transformer and an additional volume cryogenic transformer on a toroidal ferromagnetic core is developed, fabricated, and experimentally studied. The conditions for the optimum matching of the SQUID to the signal source are analyzed. It is demonstrated that the conditions for the optimum matching and high coupling coefficient are satisfied in the transformer with a ferromagnetic core. The excess noise introduced by the core is studied experimentally. It is shown that double shielding using superconducting and ferromagnetic shields makes it possible to lower the cutoff frequency of the excess noise to less than 1 kHz.",
    author = "M.A. Tarasov and A.S. Kalabukhov and S.A. Kovtonyuk and I.L. Lapitskaya and S.A. Gudoshnikov and Mikko Kiviranta and O.V. Snigirev and L.S. Kuzmin and Heikki Sepp{\"a}",
    year = "2003",
    language = "English",
    volume = "48",
    pages = "1404--1409",
    journal = "Journal of Communications Technology and Electronics",
    issn = "1064-2269",
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    }

    Tarasov, MA, Kalabukhov, AS, Kovtonyuk, SA, Lapitskaya, IL, Gudoshnikov, SA, Kiviranta, M, Snigirev, OV, Kuzmin, LS & Seppä, H 2003, 'A femtoamperemeter based on a superconducting quantum interferometer and a bulk transformer', Journal of Communications Technology and Electronics, vol. 48, no. 12, pp. 1404-1409.

    A femtoamperemeter based on a superconducting quantum interferometer and a bulk transformer. / Tarasov, M.A.; Kalabukhov, A.S.; Kovtonyuk, S.A.; Lapitskaya, I.L.; Gudoshnikov, S.A.; Kiviranta, Mikko; Snigirev, O.V.; Kuzmin, L.S.; Seppä, Heikki.

    In: Journal of Communications Technology and Electronics, Vol. 48, No. 12, 2003, p. 1404-1409.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - A femtoamperemeter based on a superconducting quantum interferometer and a bulk transformer

    AU - Tarasov, M.A.

    AU - Kalabukhov, A.S.

    AU - Kovtonyuk, S.A.

    AU - Lapitskaya, I.L.

    AU - Gudoshnikov, S.A.

    AU - Kiviranta, Mikko

    AU - Snigirev, O.V.

    AU - Kuzmin, L.S.

    AU - Seppä, Heikki

    PY - 2003

    Y1 - 2003

    N2 - A femtoamperemeter based on a superconducting quantum interference device (SQUID) with a planar on-chip gradiometric transformer and an additional volume cryogenic transformer on a toroidal ferromagnetic core is developed, fabricated, and experimentally studied. The conditions for the optimum matching of the SQUID to the signal source are analyzed. It is demonstrated that the conditions for the optimum matching and high coupling coefficient are satisfied in the transformer with a ferromagnetic core. The excess noise introduced by the core is studied experimentally. It is shown that double shielding using superconducting and ferromagnetic shields makes it possible to lower the cutoff frequency of the excess noise to less than 1 kHz.

    AB - A femtoamperemeter based on a superconducting quantum interference device (SQUID) with a planar on-chip gradiometric transformer and an additional volume cryogenic transformer on a toroidal ferromagnetic core is developed, fabricated, and experimentally studied. The conditions for the optimum matching of the SQUID to the signal source are analyzed. It is demonstrated that the conditions for the optimum matching and high coupling coefficient are satisfied in the transformer with a ferromagnetic core. The excess noise introduced by the core is studied experimentally. It is shown that double shielding using superconducting and ferromagnetic shields makes it possible to lower the cutoff frequency of the excess noise to less than 1 kHz.

    M3 - Article

    VL - 48

    SP - 1404

    EP - 1409

    JO - Journal of Communications Technology and Electronics

    JF - Journal of Communications Technology and Electronics

    SN - 1064-2269

    IS - 12

    ER -

    Tarasov MA, Kalabukhov AS, Kovtonyuk SA, Lapitskaya IL, Gudoshnikov SA, Kiviranta M et al. A femtoamperemeter based on a superconducting quantum interferometer and a bulk transformer. Journal of Communications Technology and Electronics. 2003;48(12):1404-1409.