NbN/AlN/NbN Tunnel Junctions Applied as Terahertz SIS Mixers (Special Issue on Basic Properties and Applications of Superconductive Electron Devices)
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概要
- 論文の詳細を見る
We report on progress in the development of high-current-density all-NbN tunnel junctions for application as submillimeter wave SIS mixers. A very high current density up to 54 kA/cm^2, roughly an order of magnitude larger than any reported results for all-NbN tunnel junctions, was achieved in the junctions with a thin aluminum nitride (AlN) tunnel barrier. Even though the junctions have a very high current density, they showed high-quality junction characteristics with a large gap voltage, sharp quasipartical current rise, and small subgap leakage current. The junctions also exhibited good Josephson tunneling behavior, excellent terahertz response, and sensitive heterodyne mixing properties. NbN/AlN/NbN tunnel junctions were integrated with a NbN thin-film antenna to investigate the terahertz responses and the heterodyne mixing properties in a quasi-optical mixer testing system. Photon-assisted tunneling steps were clearly observed on the I-V curve with irradiation up to 1 THz, and low-noise heterodyne mixing was demonstrated in the 300-GHz band.
- 社団法人電子情報通信学会の論文
- 1997-10-25
著者
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Wang Zhen
Kansai Advanced Research Center Communications Research Laboratory Iwaoka
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Wang Z
Kansai Advanced Research Center Communications Research Laboratory
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Kawakami A
Kansai Advanced Research Center National Institute Of Information And Communications Technology
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Kawakami Akira
Technol. Res. Assoc. Advanced Display Materials Tokyo Jpn
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Kawakami A
Tokyo Univ. Agriculture And Technol. Tokyo Jpn
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Wang Z
Communications Res. Lab. Ministry Of Posts And Telecommunications Kobe‐shi Jpn
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Kawakami Akira
Kansai Advanced Research Center National Institute Of Information And Communications Technology
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Wang Z
Nanyang Technological Univ. Singapore
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Kan Akinori
Department Of Orthopaedic Surgery The University Of Tokyo
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Kawakami A
National Agricultural Res. Center For Hokkaido Region Sapporo Jpn
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UZAWA Yoshinori
Kansai Advanced Research Center, National Institute of Information and Communications Technology
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Uzawa Y
National Astronomical Observatory Of Japan
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Kawakami Akira
Kansai Advanced Research Center Communications Research Laboratory Ministry Of Posts And Telecommuni
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Uzawa Yoshinori
Kansai Advanced Research Center Communications Research Laboratory
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Uzawa Yoshinori
National Astronomical Observatory Of Japan
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Wang Zhen
Kansai Advanced Research Center Communications Research Laboratory
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