Abstract
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 language | English |
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Article number | 085013 |
Pages (from-to) | 1-9 |
Number of pages | 9 |
Journal | New Journal of Physics |
Volume | 15 |
DOIs | |
Publication status | Published - 13 Aug 2013 |
MoE publication type | A1 Journal article-refereed |