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

Gordeeva, A. V.Nizhny Novgorod State Technical University,Russian Academy of Sciences (författare)

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.

Pankratov, A. L.Nizhny Novgorod State Technical University,Russian Academy of Sciences (författare)
Pugach, N. G.National Research University Higher School of Economics,M. V. Lomonosov Moscow State University (författare)
Vasenko, Andrey,1974National Research University Higher School of Economics,Donostia International Physics Center(Swepub:cth)vasenko (författare)
Zbrozhek, V. O.Nizhny Novgorod State Technical University (författare)
Blagodatkin, A. V.Nizhny Novgorod State Technical University (författare)
Pimanov, D. A.Nizhny Novgorod State Technical University (författare)
Kuzmin, Leonid,1946Nizhny Novgorod State Technical University,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)kuzmin (författare)
Nizhny Novgorod State Technical UniversityRussian Academy of Sciences (creator_code:org_t)

Ingår i:Scientific Reports: Springer Science and Business Media LLC10:12045-23222045-2322

Av författaren/redakt...: Gordeeva, A. V.; Pankratov, A. L.; Pugach, N. G.; Vasenko, Andrey, ...; Zbrozhek, V. O.; Blagodatkin, A. ...; visa fler...; Pimanov, D. A.; Kuzmin, Leonid, ...; visa färre...

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