Josephson effects in U-shaped YBa2Cu3O7-y microbridges

H. C. Yang, H. H. Sung, C. Y. Huang, H. E. Horng, Y. T. Lee, J. T. Lo

Research output: Contribution to journalArticle


We have fabricated U-shape YBa2Cu3Oy high-Tc microbridges on SrTiO3(001) substrates. The bridge is microprocessed by means of photolithography and wet etching. The fabricated configuration of the bridge is 20 μm wide, 10 μm long and 10 - 40 nm thick. Current-voltage curves show a hysteretic behavior. The junction capacitance is 0.57 pF and the IcRn product is 0.5 mV at 35 K. Shapiro steps are observed under microwave irradiation; voltage spikes are occasionally observed in current-voltage curves and are owing to the absence of the phase locking in the weak links.

Original languageEnglish
Pages (from-to)1773-1774
Number of pages2
JournalPhysica B: Physics of Condensed Matter
Issue numberPART 2
Publication statusPublished - 1994 Feb 2

ASJC Scopus subject areas

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

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    Yang, H. C., Sung, H. H., Huang, C. Y., Horng, H. E., Lee, Y. T., & Lo, J. T. (1994). Josephson effects in U-shaped YBa2Cu3O7-y microbridges. Physica B: Physics of Condensed Matter, 194-196(PART 2), 1773-1774.