Communication Dans Un Congrès Année : 2019

Experimental Study and Time-domain Analysis of Microwave Resonances of a Transformer-coupled DC SQUID at Different Temperatures

Résumé

Measurements of the I-V curves of DC Superconducting Quantum Interference Devices (DC-SQUIDs) can show unexpected resonances that reduce their performance. They can be due to capacitive couplings in the circuitry of the magnetic field capturing loop. We developed a compact model of the SQUID circuitry associated to time-domain simulations to compare with experimental measurements performed for temperatures from 3K to 5K in an unshielded closed-cycle GM cooler. An RCSJ model is used for the Josephson junctions, while microstrip lines make use of a CLC π-model. It is seen that parasitic capacitances must be considered with time-domain simulations to account for experimentally observed resonances. A more accurate model is still necessary to find a quantitative match for the resonances frequencies.

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hal-04880099 , version 1 (10-01-2025)

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Serhii Syrotenko, Ugur Yilmaz, Sasan Razmkhah, Olena Protsenko, Pascal Febvre. Experimental Study and Time-domain Analysis of Microwave Resonances of a Transformer-coupled DC SQUID at Different Temperatures. 2019 IEEE 9th International Conference Nanomaterials: Applications & Properties (NAP), Sumy State University, Sep 2019, Odessa, Ukraine. pp.02TM10-1-02TM10-4, ⟨10.1109/NAP47236.2019.216953⟩. ⟨hal-04880099⟩
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