NDLI: The responsivity of Ta-based STJ devices as a function of temperature and bias

Content Provider	IEEE Xplore Digital Library
Author	Jerjen, I. Kirk, E.C. Lerch, P. Zehnder, A. Ott, H.R.
Copyright Year	2002
Abstract	The potential of superconducting tunneling junctions (STJ) as energy resolving photon counters was proved in the range of 1 eV to 6 keV. In our laboratory we are producing and studying Ta/Al1/AlOx/Al2/Ta STJs. The responsivity of a STJ depends on the energy of the photon, the geometry of the STJ, the temperature and the bias point. We measured the dependence of the responsivity on the bias and the temperature. We model our devices with four quasiparticle populations coupled by the usual Rothwarf-Taylor balance equations. This simple approach appears to explain some of the observed features and doesn't require the introduction of local traps in the quasiparticle dynamics.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	602
Ending Page	605
Page Count	4
File Size	121175
File Format	PDF
ISSN	10518223
Volume Number	15
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Tunneling Equations Kirk field collapse effect Josephson junctions Energy resolution Temperature dependence Zinc Niobium Argon Temperature distribution thin absorber Responsivity increase with temperature Ta based STJ
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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