Journal
NEW JOURNAL OF PHYSICS
Volume 15, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/15/8/085013
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Funding
- European Community Research Infrastructures under the FP7 Capacities Specific Programme
- MICROKELVIN project [228464]
- EPSRC grant [EP/F040784/1]
- Academy of Finland through its LTQ CoE grant [250280]
- EPSRC [EP/F040784/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F040784/1] Funding Source: researchfish
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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.
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