Voltage modulation of high-Tc SQUIDs with step-edge junctions

J. T. Jeng*, Y. C. Liu, S. Y. Yang, H. E. Horng, H. C. Yang, H. H. Sung

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


We studied the V-I characteristics and the voltage modulation of washer-type step-edge YBa2C3uOy dc SQUIDs. It was found that the banks of the SQUID were composed of two junctions in series. The V-I curve can be fitted to the RSJ model with a sinusoidal current phase relation for the first grain-boundary junction while the second junction show a non-sinusoidal current phase relation. The V-Φ curves of SQUIDs can be characterized by the parameters of the first junctions if the SQUID is biased at I approx. Ic1 where Ic1 is the critical current of the first junction. The implications of the data are discussed.

Original languageEnglish
Pages (from-to)2701-2702
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume341-348 (IV)
Publication statusPublished - 2000 Nov
EventInternational Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI - Houston, TX, USA
Duration: 2000 Feb 202000 Feb 25

ASJC Scopus subject areas

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


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