Nb-based superconducting tunnel junctions with β-Ta trapping layers for photon detectors

Hiroaki Myoren, Yuki Kogure, Susumu Takada, Hiromi Sato, Chiko Otani, Hirohiko M. Shimizu, Keisuke Maehata

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

We have successfully fabricated Nb-based superconducting tunnel junctions (STJs) with β-Ta trapping layers. In an Nb/β-Ta stacked structure, β-Ta film showed the thickness dependence of critical temperature T c in current-voltage (I-V) characteristics due to the proximity effect from Nb films. We fabricated Nb-based STJs with β-Ta trapping layers for X-ray detector working at 0.4 K. We obtained an energy resolution of 52 eV for 5.9 keV X-ray irradiation at 0.4 K. We expect a high energy resolution by optimizing the thickness of β-Ta trapping layers and improving the fabrication process.

Original languageEnglish
Pages (from-to)1136-1138
Number of pages3
JournalIEEE Transactions on Applied Superconductivity
Volume13
Issue number2 I
Publication statusPublished - Jun 1 2003
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: Aug 4 2002Aug 9 2002

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Tunnel junctions
tunnel junctions
Photons
trapping
Detectors
X rays
detectors
photons
Current voltage characteristics
Irradiation
Fabrication
critical temperature
x rays
fabrication
irradiation
energy
electric potential
Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Myoren, H., Kogure, Y., Takada, S., Sato, H., Otani, C., Shimizu, H. M., & Maehata, K. (2003). Nb-based superconducting tunnel junctions with β-Ta trapping layers for photon detectors. IEEE Transactions on Applied Superconductivity, 13(2 I), 1136-1138.

Nb-based superconducting tunnel junctions with β-Ta trapping layers for photon detectors. / Myoren, Hiroaki; Kogure, Yuki; Takada, Susumu; Sato, Hiromi; Otani, Chiko; Shimizu, Hirohiko M.; Maehata, Keisuke.

In: IEEE Transactions on Applied Superconductivity, Vol. 13, No. 2 I, 01.06.2003, p. 1136-1138.

Research output: Contribution to journalConference article

Myoren, H, Kogure, Y, Takada, S, Sato, H, Otani, C, Shimizu, HM & Maehata, K 2003, 'Nb-based superconducting tunnel junctions with β-Ta trapping layers for photon detectors', IEEE Transactions on Applied Superconductivity, vol. 13, no. 2 I, pp. 1136-1138.
Myoren H, Kogure Y, Takada S, Sato H, Otani C, Shimizu HM et al. Nb-based superconducting tunnel junctions with β-Ta trapping layers for photon detectors. IEEE Transactions on Applied Superconductivity. 2003 Jun 1;13(2 I):1136-1138.
Myoren, Hiroaki ; Kogure, Yuki ; Takada, Susumu ; Sato, Hiromi ; Otani, Chiko ; Shimizu, Hirohiko M. ; Maehata, Keisuke. / Nb-based superconducting tunnel junctions with β-Ta trapping layers for photon detectors. In: IEEE Transactions on Applied Superconductivity. 2003 ; Vol. 13, No. 2 I. pp. 1136-1138.
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AU - Shimizu, Hirohiko M.

AU - Maehata, Keisuke

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