Manifestly non-Gaussian fluctuations in superconductor-normal metal tunnel nanostructures.
نویسندگان
چکیده
We propose a mesoscopic setup which exhibits strong and manifestly non-Gaussian fluctuations of energy and temperature when suitably driven out of equilibrium. The setup consists of a normal metal island (N) coupled by tunnel junctions (I) to two superconducting leads (S), forming a SINIS structure, and is biased near the threshold voltage for quasiparticle tunneling, eV≈2Δ. The fluctuations can be measured by monitoring the time-dependent electric current through the system. This makes the setup suitable for the realization of feedback schemes which can be used to stabilize the temperature to the desired value.
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عنوان ژورنال:
- Physical review letters
دوره 108 6 شماره
صفحات -
تاریخ انتشار 2012