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 journalArticle

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

Fingerprint

interference grating
SQUIDs
Magnetometers
transfer functions
Josephson junctions
magnetometers
Transfer functions
Grain boundaries
grain boundaries
Fluxes
interference
Magnetic flux
magnetic flux
unity
Screening
screening
augmentation
Electric potential
electric potential

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

Cite this

Characteristics of the superconducting-quantum-interference-grating magnetometer consisting of grain-boundary Josephson junctions. / Jeng, J. T.; Huang, K. H.; Wu, C. H.; Chen, K. L.; Chen, J. C.; Yang, H. C.

In: IEEE Transactions on Applied Superconductivity, Vol. 17, No. 2, 01.06.2007, p. 691-694.

Research output: Contribution to journalArticle

Jeng, J. T. ; Huang, K. H. ; Wu, C. H. ; Chen, K. L. ; Chen, J. C. ; Yang, H. C. / Characteristics of the superconducting-quantum-interference-grating magnetometer consisting of grain-boundary Josephson junctions. In: IEEE Transactions on Applied Superconductivity. 2007 ; Vol. 17, No. 2. pp. 691-694.
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