A robust platform cooled by superconducting electronic refrigerators

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2015
Major/Subject
Mcode
Degree programme
Language
en
Pages
012601/1-4
Series
Applied Physics Letters, Volume 106, Issue 1
Abstract
A biased tunnel junction between a superconductor and a normal metal can cool the latter electrode. Based on a recently developed cooler with high power and superior performance, we have integrated it with a dielectric silicon nitride membrane, and cooled phonons from 305 mK down to 200 mK. Without perforation and covered under a thin alumina layer, the membrane is rigorously transformed into a cooling platform that is robust and versatile for multiple practical purposes. We discussed our results and possibilities to further improve the device.
Description
Keywords
phonons, thermometers, copper, superconducting metals, electrodes
Other note
Citation
Nguyen, H. Q. & Meschke, M. & Pekola, Jukka. 2015. A robust platform cooled by superconducting electronic refrigerators. Applied Physics Letters. Volume 106, Issue 1. P. 012601/1-4. ISSN 0003-6951 (printed). DOI: 10.1063/1.4905440.