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

doi:10.1109/TASC.2007.898270

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The characteristics of the magnetometer based on the superconducting quantum interference grating (SQIG) consisting of multiple high-T_c 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 language	English
Pages (from-to)	691-694
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	17
Issue number	2
DOIs	https://doi.org/10.1109/TASC.2007.898270
Publication status	Published - 2007 Jun
Externally published	Yes

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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10.1109/TASC.2007.898270

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title = "Characteristics of the superconducting-quantum-interference-grating magnetometer consisting of grain-boundary Josephson junctions",

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.",

keywords = "Grain-boundary Josephson junctions, High-T SQUID, Superconducting-quantum-interference grating",

author = "Jeng, {J. T.} and Huang, {K. H.} and Wu, {C. H.} and Chen, {K. L.} and Chen, {J. C.} and Yang, {H. C.}",

note = "Funding Information: Manuscript received August 29, 2006. This work is supported by the National Science Council of R.O.C. under Grant No. NSC94-2112-M-027-003. J. T. Jeng is with the Institute of Mechatronic Engineering, National Taipei University of Technology, Taipei 10608, Taiwan (e-mail: jtjeng@ntut.edu.tw). K. H. Huang is with the Institute of Manufacturing Technology, National Taipei University of Technology, Taipei 10608, Taiwan. C. H. Wu is with the Department of Physics, Tunghai University, Taichung 40704, Taiwan. K. L. Chen, J. C. Chen, and H. C. Yang are with the Department of Physics, National Taiwan University, Taipei 10617, Taiwan. Digital Object Identifier 10.1109/TASC.2007.898270",

year = "2007",

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doi = "10.1109/TASC.2007.898270",

language = "English",

volume = "17",

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AU - Huang, K. H.

AU - Wu, C. H.

AU - Chen, K. L.

AU - Chen, J. C.

AU - Yang, H. C.

N1 - Funding Information: Manuscript received August 29, 2006. This work is supported by the National Science Council of R.O.C. under Grant No. NSC94-2112-M-027-003. J. T. Jeng is with the Institute of Mechatronic Engineering, National Taipei University of Technology, Taipei 10608, Taiwan (e-mail: jtjeng@ntut.edu.tw). K. H. Huang is with the Institute of Manufacturing Technology, National Taipei University of Technology, Taipei 10608, Taiwan. C. H. Wu is with the Department of Physics, Tunghai University, Taichung 40704, Taiwan. K. L. Chen, J. C. Chen, and H. C. Yang are with the Department of Physics, National Taiwan University, Taipei 10617, Taiwan. Digital Object Identifier 10.1109/TASC.2007.898270

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AB - 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.

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

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Keywords

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