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A Superconducting Cold-Electron Bolometer with SIS’ and Josephson Tunnel Junctions

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Abstract

A novel concept of a Superconducting Cold-Electron Bolometer (SCEB) with Superconductor-Insulator-Weak Superconductor (SIS’) Tunnel Junction and Josephson Junction has been proposed. The main innovation of this concept is utilizing the Josephson Junction for DC and HF contacts, and for thermal isolation. The SIS’ junction is used also for electron cooling and dc readout of the signal. The SIS’ junction is designed in loop geometry for suppression of the critical current by a weak magnetic field. The key moment of this concept is that the critical current of the Josephson junction is not suppressed by this weak magnetic field and can be used for dc contact. Due to this innovation, a robust two layer technology can be used for fabrication of reliable structures. A direct connection of SCEBs to a 4-probe antenna has been proposed for effective RF coupling.

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Authors and Affiliations

  1. Chalmers University of Technology, 41296, Gothenburg, Sweden

    Leonid Kuzmin

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  1. Leonid Kuzmin
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Correspondence to Leonid Kuzmin.

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Kuzmin, L. A Superconducting Cold-Electron Bolometer with SIS’ and Josephson Tunnel Junctions. J Low Temp Phys 151, 292–297 (2008). https://doi.org/10.1007/s10909-007-9654-9

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  • DOI: https://doi.org/10.1007/s10909-007-9654-9

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