Characteristics of the superconducting-quantum-interference-grating magnetometer consisting of grain-boundary Josephson junctions

J. T. Jeng, K. H. Huang, C. H. Wu, K. L. Chen, J. C. Chen, H. C. Yang

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    The characteristics of the magnetometer based on the superconducting quantum interference grating (SQIG) consisting of multiple high-Tc grain-boundary Josephson junctions were investigated. In comparison with the two-junction superconducting quantum interference device (SQUID), an enhancement in the flux-to-voltage transfer function by a factor of 4.6 was achieved. Moreover, a sharp increase in the flux-to-current transfer function by a factor of 45 was observed for the case with the screening parameter much less than unity. The estimated white magnetic flux noise of the SQIG is lower than that of the conventional SQUID by one order of magnitude.

    Original languageEnglish
    Pages (from-to)691-694
    Number of pages4
    JournalIEEE Transactions on Applied Superconductivity
    Volume17
    Issue number2
    DOIs
    Publication statusPublished - 2007 Jun 1

    Keywords

    • Grain-boundary Josephson junctions
    • High-T SQUID
    • Superconducting-quantum-interference grating

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Electrical and Electronic Engineering

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