On-chip coil-integrated STJ using the persistent superconducting current for photon detectors

Katsuya Kikuchi, Tohru Taino, Masaki Nanme, Hiroshi Nakagawa, Masahiro Aoyagi, Hiroshi Sato, Hiroshi Akoh, Takeshi Iizuka, Hiroaki Myoren, Susumu Takada, Keisuke Maehata, Kenji Ishibashi, Hiromi Sato, Tokihiro Ikeda, Chiko Otani, Yoshiyuki Takizawa, Takayuki Oku, Kazuhiko Kawai, Hiromasa Miyasaka, Hirohiko M. ShimizuHiroshi Kato, Hiroshi Watanabe

研究成果: ジャーナルへの寄稿会議記事査読

1 被引用数 (Scopus)

抄録

A superconducting tunnel junction (STJ) is very attractive for use in high-energy-resolution photon detectors because of its small energy gap. To detect a single photon, the Josephson current of the STJ has had to be suppressed by an external magnetic field. We demonstrated an on-chip coil-integrated STJ photon detector, which excludes the external magnetic field, allowing a small device size. A normal-distribution function shape was adopted for the superconducting electrodes, which makes the magnetic field supplied to the STJ small. We devise a new superconducting photon detector by combining the above techniques. A new Josephson switching gate is also integrated on the same detector chip in order to drive an on-chip integrated coil by a persistent superconducting current. This behavior was confirmed experimentally using the technology of the fabrication process of the Nb/Al-AlOx/Nb Josephson tunnel junction.

本文言語英語
ページ(範囲)1132-1135
ページ数4
ジャーナルIEEE Transactions on Applied Superconductivity
13
2 I
DOI
出版ステータス出版済み - 6月 2003
イベント2002 Applied Superconductivity Conference - Houston, TX, 米国
継続期間: 8月 4 20028月 9 2002

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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