Coherent phase locking of high-Tc YBa2Cu3Oy Josephson junctions

H. C. Yang*, C. H. Wu, M. J. Chen, J. H. Chen, C. H. Chen, H. W. Yu, J. T. Jeng, H. E. Horng

*此作品的通信作者

研究成果: 雜誌貢獻會議論文同行評審

4 引文 斯高帕斯(Scopus)

摘要

We measured I-V curves and noise characteristics of high-Tc YBa2Cu3Oy step-edge Josephson junctions and serial junction arrays under microwave irradiation. The junctions were fabricated on step-edge MgO(100) substrates with low step angles (∼30°). The junction array shows the resistively shunted junction (RSJ) behavior for at least 50 junctions and reveals a coherent phase locking under microwave irradiation. The variation of Ic was 16% for a 150-junctions array distributed along the step-edge line of 1.5 mm in width. The voltage noise, Sv, of the serial junction array scales as the number of junctions, N. The value of SIR, (SIR = |(δIc/Ic)∥(δR/R)|), for a single and 50-junctions obtained from the fluctuation measurement is consistent with the result derived from IcRn ∝ (Jc)q, with q = 0.5.

原文英語
頁(從 - 到)308-311
頁數4
期刊IEEE Transactions on Applied Superconductivity
11
發行號1 I
DOIs
出版狀態已發佈 - 2001 3月
對外發佈
事件2000 Applied Superconductivity Conference - Virginia Beach, VA, 美国
持續時間: 2000 9月 172000 9月 22

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學
  • 電氣與電子工程

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