On-and-off chip cooling of a Coulomb blockade thermometer down to 2.8 mK
| Autor: | Mario Palma, D. Maradan, Christian Scheller, Matthias Meschke, A. V. Feshchenko, Dominik M. Zumbühl |
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| Přispěvatelé: | University of Basel, Department of Applied Physics, Quantum Phenomena and Devices, Aalto-yliopisto, Aalto University |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
Condensed Matter - Mesoscale and Nanoscale Physics Physics and Astronomy (miscellaneous) Condensed matter physics Demagnetizing field ta221 FOS: Physical sciences Refrigeration Coulomb blockade 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Nanoelectronics Thermometer Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Thermal 010306 general physics 0210 nano-technology Adiabatic process Decoupling (electronics) |
| Zdroj: | APPLIED PHYSICS LETTERS. 111(25):1-5 |
| ISSN: | 0003-6951 |
| DOI: | 10.1063/1.5002565 |
| Popis: | Cooling nanoelectronic devices below 10 mK is a great challenge since thermal conductivities become very small, thus creating a pronounced sensitivity to heat leaks. Here, we overcome these difficulties by using adiabatic demagnetization of \emph{both} the electronic leads \emph{and} the large metallic islands of a Coulomb blockade thermometer. This reduces the external heat leak through the leads and also provides on-chip refrigeration, together cooling the thermometer down to 2.8$\pm$0.1 mK. We present a thermal model which gives a good qualitative account and suggests that the main limitation is heating due to pulse tube vibrations. With better decoupling, temperatures below 1 mK should be within reach, thus opening the door for microkelvin nanoelectronics. Comment: 4 pages, 3 color figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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