Trapping hot quasi-particles in a high-power superconducting electronic cooler

H.Q. Nguyen, T. Aref, V.J. Kauppila, M. Meschke, C.B. Winkelmann, H. Courtois, J.P. Pekola

Research output: Contribution to journalArticleScientificpeer-review

32 Citations (Scopus)
138 Downloads (Pure)


The performance of hybrid superconducting electronic coolers is usually limited by the accumulation of hot quasi-particles in their superconducting leads. This issue is all the more stringent in large-scale and high-power devices, as required by the applications. Introducing a metallic drain connected to the superconducting electrodes via a fine-tuned tunnel barrier, we efficiently remove quasi-particles and obtain electronic cooling from 300 mK down to 130 mK with a 400 pW cooling power. A simple thermal model accounts for the experimental observations.
Original languageEnglish
Article number085013
Pages (from-to)1-9
Number of pages9
JournalNew Journal of Physics
Publication statusPublished - 13 Aug 2013
MoE publication typeA1 Journal article-refereed

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