Thermoelectric Radiation Detector Based on Superconductor-Ferromagnet Systems
Heikkilä, T., Ojajärvi, R., Maasilta, I., Strambini, E., Giazotto, F., & Bergeret, F. S. (2018). Thermoelectric Radiation Detector Based on Superconductor-Ferromagnet Systems. Physical Review Applied, 10(3), Article 034053. https://doi.org/10.1103/PhysRevApplied.10.034053
Published inPhysical Review Applied
© 2018 American Physical Society
We suggest an ultrasensitive detector of electromagnetic fields exploiting the giant thermoelectric effect recently found in superconductor-ferromagnet hybrid structures. Compared with other types of superconducting detectors where the detected signal is based on variations of the detector impedance, the thermoelectric detector has the advantage of requiring no external driving fields. This is especially relevant in multipixel detectors, where the number of bias lines and the heating induced by them are an issue. We propose different material combinations to implement the detector and provide a detailed analysis of its sensitivity and speed. In particular, we perform a proper noise analysis that includes the cross correlation between heat and charge current noise and thereby describes also thermoelectric detectors with a large thermoelectric figure of merit.
PublisherAmerican Physical Society
Publication in research information system
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Related funder(s)Academy of Finland
Funding program(s)Academy Project, AoF; Centre of Excellence, AoF; Others, AoF
Additional information about fundingThis project was supported by the Academy of Finland via its Key Funding Project (Grant No. 305256), the Center of Excellence program (Grant No. 284594),and Grants No. 298667 and 317118; the European Union Seventh Framework Programme (ERC Grant No. 615187-COMANCHE) and the Horizon 2020 research and innovation programme (Grant No. 800923-SUPERTED); the Tuscany Region under the FARFAS 2014 project SCI-ADRO, and the Spanish Ministerio de Economia, Industriay Competitividad (Grants No. FIS2014-55987- P and No. FIS2017-82804-P). ...
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