High Tc Superconducting Step-edge Junctions and Their Properties in Millimeter-wave Band

Y. J. Feng, L. Kang, X. B. Wang, S. Z. Yang, J. P. Zuo, H. B. Wang, W. W. Xu, Q. H. Cheng, P. H. Wu, S. L. Yan, L. Zhou

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

Superconducting step-edge junctions were fabricated on step-edges in (100) LaAlO3 substrates by sputter-deposited epitaxial YBaCuO and TIBaCaCuO thin films. The substrate steps were patterned by ion beam etching using metal film as a mask. The transport properties of the junctions were characterized by four-probe electrical measurements. The critical current-normal resistance product (ICRN) was larger than 0.2mV (77K) for most of the junctions. Clear Shapiro steps were observed in the current-voltage characteristics of the junctions with 36GHz or 95GHz millimeter-wave irradiation. The high frequency properties of these high Tc Josephson junctions showed that they were quite suitable for the Josephson harmonic mixer used in the digital phase locked millimeter and sub-millimeter wave sources.

源语言英语
页(从-至)2798-2800
页数3
期刊IEEE Transactions on Applied Superconductivity
5
2
DOI
出版状态已出版 - 6月 1995
已对外发布

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