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RESEARCH PRODUCT

Efficient Peltier refrigeration by a pair of normal metal/ insulator/superconductor junctions

D. V. AverinJukka P. PekolaM. M. Leivo

subject

SuperconductivityMaterials sciencePhysics and Astronomy (miscellaneous)Condensed matter physicsCondensed Matter (cond-mat)Refrigerator carRefrigerationFOS: Physical sciencesInsulator (electricity)Condensed MatterJunction areaThermoelectric effectCooling powerMetal insulator

description

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.

yearjournalcountryeditionlanguage
1995-11-27
10.1063/1.115651http://arxiv.org/abs/cond-mat/9511127