High quality Nb/Al-AlOx/Nb superconducting tunnel junctions for radiation detection

K. Joosse, H. Nakagawa, H. Akoh, S. Takada, K. Maehata, K. Ishibashi

研究成果: Contribution to journalArticle査読

12 被引用数 (Scopus)

抄録

Nb/Al-AlOx/Nb tunnel junctions designed for x-ray detection have been manufactured and characterized at temperatures down to 0.35 K. At a bias voltage of 0.5 mV, a leakage current of the order of 0.1 pA/μm2, and a dynamic resistance exceeding 106 times the normal state resistance, were achieved in junctions with dimensions up to 200×200 μm2 and critical current densities of order 200 A/cm2. The combination of high critical current density, low leakage current, and large area represents an important step towards the development of superconducting tunnel junction detectors with improved spectroscopic performance.

本文言語英語
ページ(範囲)702-704
ページ数3
ジャーナルApplied Physics Letters
68
5
DOI
出版ステータス出版済み - 12 1 1996

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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