TY - JOUR
T1 - Nb-based superconducting tunnel junctions with β-Ta trapping layers for photon detectors
AU - Myoren, Hiroaki
AU - Kogure, Yuki
AU - Takada, Susumu
AU - Sato, Hiromi
AU - Otani, Chiko
AU - Shimizu, Hirohiko M.
AU - Maehata, Keisuke
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2003/6
Y1 - 2003/6
N2 - 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.
AB - 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.
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M3 - Conference article
AN - SCOPUS:0041474613
SN - 1051-8223
VL - 13
SP - 1136
EP - 1138
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 2 I
T2 - 2002 Applied Superconductivity Conference
Y2 - 4 August 2002 through 9 August 2002
ER -