Record electron self-cooling in cold-electron bolometers with a hybrid superconductor-ferromagnetic nanoabsorber and traps

The Cosmic Microwave Background (CMB) radiation is the only observable that allows studying the earliest stage of the Universe. Radioastronomy instruments for CMB investigation require low working temperatures around 100 mK to get the necessary sensitivity. On-chip electron cooling of receivers is a...

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Autores principales: Gordeeva, A. V., Pankratov, A. L., Pugach, N. G., Vasenko, A. S., Zbrozhek, V. O., Blagodatkin, A. V., Pimanov, D. A., Kuzmin, L. S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7738494/
https://www.ncbi.nlm.nih.gov/pubmed/33319817
http://dx.doi.org/10.1038/s41598-020-78869-z
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author Gordeeva, A. V.
Pankratov, A. L.
Pugach, N. G.
Vasenko, A. S.
Zbrozhek, V. O.
Blagodatkin, A. V.
Pimanov, D. A.
Kuzmin, L. S.
author_facet Gordeeva, A. V.
Pankratov, A. L.
Pugach, N. G.
Vasenko, A. S.
Zbrozhek, V. O.
Blagodatkin, A. V.
Pimanov, D. A.
Kuzmin, L. S.
author_sort Gordeeva, A. V.
collection PubMed
description The Cosmic Microwave Background (CMB) radiation is the only observable that allows studying the earliest stage of the Universe. Radioastronomy instruments for CMB investigation require low working temperatures around 100 mK to get the necessary sensitivity. On-chip electron cooling of receivers is a pathway for future space missions due to problems of dilution fridges at low gravity. Here, we demonstrate experimentally that in a Cold-Electron Bolometer (CEB) a theoretical limit of electron cooling down to 65 mK from phonon temperature of 300 mK can be reached. It is possible due to effective withdrawing of hot electrons from the tunnel barrier by double stock, special traps and suppression of Andreev Joule heating in hybrid Al/Fe normal nanoabsorber.
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spelling pubmed-77384942020-12-17 Record electron self-cooling in cold-electron bolometers with a hybrid superconductor-ferromagnetic nanoabsorber and traps Gordeeva, A. V. Pankratov, A. L. Pugach, N. G. Vasenko, A. S. Zbrozhek, V. O. Blagodatkin, A. V. Pimanov, D. A. Kuzmin, L. S. Sci Rep Article The Cosmic Microwave Background (CMB) radiation is the only observable that allows studying the earliest stage of the Universe. Radioastronomy instruments for CMB investigation require low working temperatures around 100 mK to get the necessary sensitivity. On-chip electron cooling of receivers is a pathway for future space missions due to problems of dilution fridges at low gravity. Here, we demonstrate experimentally that in a Cold-Electron Bolometer (CEB) a theoretical limit of electron cooling down to 65 mK from phonon temperature of 300 mK can be reached. It is possible due to effective withdrawing of hot electrons from the tunnel barrier by double stock, special traps and suppression of Andreev Joule heating in hybrid Al/Fe normal nanoabsorber. Nature Publishing Group UK 2020-12-15 /pmc/articles/PMC7738494/ /pubmed/33319817 http://dx.doi.org/10.1038/s41598-020-78869-z Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Gordeeva, A. V.
Pankratov, A. L.
Pugach, N. G.
Vasenko, A. S.
Zbrozhek, V. O.
Blagodatkin, A. V.
Pimanov, D. A.
Kuzmin, L. S.
Record electron self-cooling in cold-electron bolometers with a hybrid superconductor-ferromagnetic nanoabsorber and traps
title Record electron self-cooling in cold-electron bolometers with a hybrid superconductor-ferromagnetic nanoabsorber and traps
title_full Record electron self-cooling in cold-electron bolometers with a hybrid superconductor-ferromagnetic nanoabsorber and traps
title_fullStr Record electron self-cooling in cold-electron bolometers with a hybrid superconductor-ferromagnetic nanoabsorber and traps
title_full_unstemmed Record electron self-cooling in cold-electron bolometers with a hybrid superconductor-ferromagnetic nanoabsorber and traps
title_short Record electron self-cooling in cold-electron bolometers with a hybrid superconductor-ferromagnetic nanoabsorber and traps
title_sort record electron self-cooling in cold-electron bolometers with a hybrid superconductor-ferromagnetic nanoabsorber and traps
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7738494/
https://www.ncbi.nlm.nih.gov/pubmed/33319817
http://dx.doi.org/10.1038/s41598-020-78869-z
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