Theory of temperature fluctuation statistics in superconductor-normal   metal tunnel structures
  We describe the statistics of temperature fluctuations in a SINIS structure, where a normal metal island (N) is coupled by tunnel junctions (I) to two superconducting leads (S). We specify conditions under which this structure exhibits manifestly non-Gaussian fluctuations of temperature. We consider both the Gaussian and non-Gaussian regimes of these fluctuations, and the current fluctuations that are caused by the fluctuating temperature. We also describe a measurement setup that could be used to observe the temperature fluctuations. 
M. A. Laakso, T. T. Heikkil\"a, and Yuli V. Nazarov
cond-mat.mes-hall