A1 Journal article (refereed)
Superconductor-Ferromagnet Tunnel Junction Thermoelectric Bolometer and Calorimeter with a SQUID Readout (2020)

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

JYU authors or editors

Publication details

All authors or editors: Geng, Z.; Helenius, A. P.; Heikkilä, T. T.; Maasilta, I. J.

Journal or series: Journal of Low Temperature Physics

ISSN: 0022-2291

eISSN: 1573-7357

Publication year: 2020

Volume: 199

Issue number: 3-4

Pages range: 585-592

Publisher: Springer

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1007/s10909-020-02419-0

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/68806

Publication is parallel published: https://arxiv.org/abs/1908.04097


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.

Keywords: measuring instruments (devices); superconductors; electromagnetic radiation; calorimetry

Free keywords: thermoelectric; bolometer; calorimeter

Contributing organizations

Related projects

Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 1

Last updated on 2022-14-09 at 12:08