High tc de squid utilizing bicrystal junctions with 30 degree misorientation angle

Keiji Enpuku, T. Minotani, F. Sbiraishi, A. Kandori, S. Kawakami

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Performances of high Tc dc SQUID utilizing bicrystal junctions with 30° misorientation angle have been studied. Junction resistance R,=10 Q and critical current /=10-20 uA can be obtained rather easily at 7=77 K with this technology. As a result, voltage modulation depth as high as 50 |iV, and flux noise as low as 5 /Hz2 are obtained for the lOOpH-SQUlD. The measured values of the voltage modulation depth agree reasonably well with the numerical simulation, while the measured values of the flux noise are about 2 or 3 times larger than the simulation. The reason for the high noise level is discussed by taking into account imperfection of junctions.

Original languageEnglish
Pages (from-to)3109-3112
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume9
Issue number2 PART 3
DOIs
Publication statusPublished - Dec 1 1999

All Science Journal Classification (ASJC) codes

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

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