%0 Journal Article
%T Efficient Peltier refrigeration by a pair of normal metal/ insulator/superconductor junctions
%A M. M. Leivo
%A J. P. Pekola
%A D. V. Averin
%J Physics
%D 1995
%I arXiv
%R 10.1063/1.115651
%X We suggest and demonstrate in experiment that two normal metal /insulator/ superconductor (NIS) tunnel junctions combined in series to form a symmetric SINIS structure can operate as an efficient Peltier refrigerator. Specifically, it is shown that the SINIS structure with normal-state junction resistances 1.0 and 1.1 k$\Omega$ is capable of reaching a temperature of about 100 mK starting from 300 mK. We estimate the corresponding cooling power to be 1.5 pW per total junction area of 0.8 $\mu$m$^2$ at $T= 300$ mK.
%U http://arxiv.org/abs/cond-mat/9511127v1