A stable, single-chip, two-dimensional gradiometric device based on two superconducting quantum interference devices

Koichi Yokosawa, Daisuke Suzuki, Keiji Tsukada, Akira Tsukamoto

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3 Citations (Scopus)

Abstract

The fabrication of two-dimensional gradiometric devices consisting of two superconducting quantum interference devices (SQUIDs) and pickup coils made from a low-critical temperature superconductor was discussed. A square superconducting shield was used to cover the the region of overlap between the two orthogonal SQUIDs around the center of the substrate to minimize the cross-talk between the SQUIDs. Cross-talk ratio was measured by operating both gradiometers in the flux-locked loops (FLL) and the magnetic flux through each was measured when a sinusoidal magnetic flux was applied to one of the feedback coils. It was found that the noise of the SQUID devices was more stable under a changing field due to its parallel structure.

Original languageEnglish
Pages (from-to)6857-6861
Number of pages5
JournalJournal of Applied Physics
Volume92
Issue number11
DOIs
Publication statusPublished - Dec 1 2002
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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