On-chip coil integrated superconducting tunnel junction for a high performance X-ray detector

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

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


On-chip coil integrated superconducting tunnel junction (OC2-STJ) has been demonstrated for high performance X-ray detector. The STJ was fabricated by an improved fabrication technique based on a high quality Nb/Al/AlOx/Nb junction technology. The STJ shows high quality current-voltage characteristics with an ultra-low leakage current of a few nA at 0.4 K for 100 μm × 100 μm junction. Typical critical current of the coil was achieved more than 50 mA for 2 μm line width, which can generate a magnetic field of about 10 mT into the STJ. It was found that the OC2-STJ successfully responded to the irradiated 5.9 keV X-ray.

Original languageEnglish
Pages (from-to)403-406
Number of pages4
JournalPhysica C: Superconductivity and its applications
Issue numberPART 1
Publication statusPublished - Aug 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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