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arXiv · 2512.08072

Control of the effective value of the critical current of the RF SQUID by the high-frequency electromagnetic field

V. I. Shnyrkov·V. Yu. Lyakhno·O. A. Kalenyuk·D. G. Mindich·O. O. Leha·A. P. Shapovalov
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Abstract

An analysis of the influence of the high-frequency electromagnetic field on the amplitude-frequency and signal characteristics of RF SQUID and experimental verification are carried out. At low parameter , the RF SQUID behavior is well described analytically by the theoretical model. In experiment, basic operation scheme is used in which the interferometer is inductively connected to a resonant tank circuit driven by RF current at a frequency close to the resonance frequency of the tank. It is shown that parameter , which distinguishes between hysteretic and non-hysteretic regimes, can be effectively adjusted to a desired value by applying the high-frequency field of a certain amplitude and frequency much higher than tank resonant frequency. A significant increase in the conversion factor and sensitivity of the RF SQUID during this adjustment is discussed.

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V. I. Shnyrkov, V. Yu. Lyakhno, O. A. Kalenyuk, D. G. Mindich, O. O. Leha, A. P. Shapovalov. 2025-12-08. Control of the effective value of the critical current of the RF SQUID by the high-frequency electromagnetic field. https://doi.org/10.1063/10.0026089

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