Superconducting tunnel junctions on Nb- and Ta-single crystal substrates for X-ray spectrometry

We present the first high quality Nb/Al-based tunnel junctions, fabricated with a superconducting interface onto single crystal substrates of Nb and Ta. Current-voltage measurements down to 1.4 K show a subgap current which is dominated by thermal excitation of quasiparticles, no ohmic or supercondu...

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Veröffentlicht in:	IEEE transactions on applied superconductivity 1997-06, Vol.7 (2), p.3387-3390
Hauptverfasser:	Bruijn, M.P., Kiewiet, F.B., van den Berg, M.L., Luiten, O.J., de Korte, P.A.J., Brons, C.G.S., Hamster, A.W., Flokstra, J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Energy resolution Exact sciences and technology Fabrication Instruments, apparatus, components and techniques common to several branches of physics and astronomy Insulation Josephson junctions Niobium Photonic crystals Physics Spectroscopy Superconducting epitaxial layers X- and γ-ray instruments and techniques X- and γ-ray spectrometers X-ray and γ-ray spectrometers X-ray detection X-ray detectors
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