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

doi:10.1109/77.403172

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

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	2798-2800
Number of pages	3
Journal	IEEE Transactions on Applied Superconductivity
Volume	5
Issue number	2
DOIs	https://doi.org/10.1109/77.403172
State	Published - Jun 1995
Externally published	Yes

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title = "High Tc Superconducting Step-edge Junctions and Their Properties in Millimeter-wave Band",

abstract = "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.",

author = "Feng, {Y. J.} and L. Kang and Wang, {X. B.} and Yang, {S. Z.} and Zuo, {J. P.} and Wang, {H. B.} and Xu, {W. W.} and Cheng, {Q. H.} and Wu, {P. H.} and Yan, {S. L.} and L. Zhou",

year = "1995",

month = jun,

doi = "10.1109/77.403172",

language = "英语",

volume = "5",

pages = "2798--2800",

journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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TY - JOUR

T1 - High Tc Superconducting Step-edge Junctions and Their Properties in Millimeter-wave Band

AU - Feng, Y. J.

AU - Kang, L.

AU - Wang, X. B.

AU - Yang, S. Z.

AU - Zuo, J. P.

AU - Wang, H. B.

AU - Xu, W. W.

AU - Cheng, Q. H.

AU - Wu, P. H.

AU - Yan, S. L.

AU - Zhou, L.

PY - 1995/6

Y1 - 1995/6

N2 - 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.

AB - 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.

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JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

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ER -

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

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