Article ID Journal Published Year Pages File Type
1507860 Cryogenics 2010 4 Pages PDF
Abstract

We analyze the temperature dependence of the tunneling current in a normal-insulator–superconductor (NIS) tunnel junction and find that such a junction can serve as a primary thermometer below the superconducting critical temperature Tc with a nearly temperature independent sensitivity, provided the junction is suitably biased close to the superconducting gap. Deviations from expected behavior when the superconducting electrode does not follow most simple s-wave BCS density of states, and possible applications are briefly discussed.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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