期刊
APPLIED PHYSICS LETTERS
卷 102, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4793515
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资金
- NASA APRA program
We demonstrate a general-purpose solid-state refrigerator for sub-Kelvin temperatures based on the tunneling of hot electrons through normal-metal/insulator/superconductor (NIS) junctions. Previous devices using this cooling principle fell short of general-purpose refrigerators since they could not be coupled to arbitrary payloads. To create a viable refrigerator, we developed optimized NIS structures and techniques to couple multiple such structures to arbitrary objects. Using three linked NIS devices, we reduced the temperature of a 1.9 cm(3) copper stage from 290 mK to 256 mK with 700 pW of cooling power at 290 mK. We present plans to achieve base temperatures near 100 mK. [http://dx.doi.org/10.1063/1.4793515]
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