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

On-chip coil integrated superconducting tunnel junction (OC 2-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/AlO x /Nb junction technology. The STJ shows high quality current–voltage characteri...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2002-08, Vol.372, p.403-406
Main Authors: Taino, Tohru, Kikuchi, Katsuya, Nanme, Masaki, Nakagawa, Hiroshi, Aoyagi, Masahiro, Sato, Hiroshi, Akoh, Hiroshi, Maehata, Keisuke, Ishibashi, Kenji, Sato, Hiromi, Otani, Chiko, Ikeda, Tokihiro, Oku, Takayuki, Kato, Hiroshi, Kawai, Kazuhiko, Miyasaka, Hiromasa, Takizawa, Yoshiyuki, Watanabe, Hiroshi, Shimizu, Hirohiko M
Format: Article
Language:English
Subjects:
Microstrip coil
Nb/Al/AlO x/Nb
OC 2-STJ
Superconducting tunnel junction
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Summary:On-chip coil integrated superconducting tunnel junction (OC 2-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/AlO x /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 OC 2-STJ successfully responded to the irradiated 5.9 keV X-ray.
ISSN:0921-4534
1873-2143
DOI:10.1016/S0921-4534(02)00710-4