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

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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

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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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