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

M. M. Leivo*, J. P. Pekola, D. V. Averin

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

171 Citations (Scopus)

Abstract

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 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 μm2 at T=300 mK.

Original languageEnglish
Pages (from-to)1996-1998
Number of pages3
JournalApplied Physics Letters
Volume68
Issue number14
DOIs
Publication statusPublished - 1996
MoE publication typeA1 Journal article-refereed

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