X-ray detection using superconducting tunnel junction shaped normal-distribution-function : Innovative superconducting devices and their applications
In: IEICE transactions on electronics, Jg. 90 (2007), Heft 3, S. 566-569
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Zugriff:
A normal-distribution-function-shaped superconducting tunnel junction (NDF-STJ) which consists of Nb/Al-AlOx/Al/Nb has been fabricated as an X-ray detector. Current - voltage characteristics were measured at 0.4 K using three kinds of STJs, which have the dispersion parameters σ of 0.25, 0.45 and 0.75. These STJs showed very low subgap leakage current of about 5 nA. By irradiating with 5.9 keV X-rays, we obtained the spectrum of these NDF-STJs. They showed good energy resolution with small magnetic fields of below 3 mT, which is about one-tenth of those for conventional-shaped STJs.
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X-ray detection using superconducting tunnel junction shaped normal-distribution-function : Innovative superconducting devices and their applications
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Autor/in / Beteiligte Person: | TAINO, Tohru ; NISHIHARA, Tomohiro ; HOSHINO, Koichi ; MYOREN, Hiroaki ; SATO, Hiromi ; SHIMIZU, Hirohiko M ; TAKADA, Susumu |
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Zeitschrift: | IEICE transactions on electronics, Jg. 90 (2007), Heft 3, S. 566-569 |
Veröffentlichung: | Oxford: Oxford University Press, 2007 |
Medientyp: | academicJournal |
Umfang: | print, 5 ref |
ISSN: | 0916-8524 (print) |
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