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Title: A robust platform cooled by superconducting electronic refrigerators

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.
Authors:
 [1] ;  [2] ; ;  [1]
  1. Low Temperature Laboratory (OVLL), Aalto University School of Science, P.O. Box 13500, 00076 Aalto (Finland)
  2. (Viet Nam)
Publication Date:
OSTI Identifier:
22395658
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM OXIDES; COOLING; DIELECTRIC MATERIALS; HEAT EXCHANGERS; LAYERS; MEMBRANES; METALS; PERFORMANCE; PHONONS; REFRIGERATORS; SILICON NITRIDES; SUPERCONDUCTING JUNCTIONS; SUPERCONDUCTORS; TUNNEL EFFECT