Superconductor-Ferromagnet Tunnel Junction Thermoelectric Bolometer and Calorimeter with a SQUID Readout
Geng, Z., Helenius, A. P., Heikkilä, T.T., & Maasilta, I. J. (2020). Superconductor-Ferromagnet Tunnel Junction Thermoelectric Bolometer and Calorimeter with a SQUID Readout. Journal of Low Temperature Physics, 199(3-4), 585-592. https://doi.org/10.1007/s10909-020-02419-0
Published inJournal of Low Temperature Physics
© The Author(s) 2020
The superconductor-ferromagnet thermoelectric detector (SFTED) is a novel ultrasensitive radiation detector based on the giant thermoelectric effect in superconductor-ferromagnet tunnel junctions. This type of detector can be operated without the need of additional bias lines and is predicted to provide a performance rivaling transition-edge sensors and kinetic inductance detectors. Here, we report our numerical studies on the SFTED noise equivalent power, energy resolution and time constant, and the feasibility of a SQUID readout in both bolometric and calorimetric regimes, with the goal to provide practical design parameters for the detector fabrication and the readout circuitry implementation.
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Related funder(s)Academy of Finland; European Commission
Funding program(s)Academy Project, AoF
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingOpen access funding provided by University of Jyväskylä (JYU). This study was supported by the Academy of Finland Project Number 298667 and by the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 800923 (SUPERTED).
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