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

被引：0
|
作者：
Shnyrkov, V. I. [1 ]
Lyakhno, V. Yu. [2 ,3 ]
Kalenyuk, O. A. [1 ,2 ]
Mindich, D. G. [1 ]
Leha, O. O. [3 ]
Shapovalov, A. P. [1 ,2 ]
机构：
[1] Kyiv Acad Univ, UA-03142 Kiev, Ukraine
[2] Natl Acad Sci Ukraine, GV Kurdyumov Inst Met Phys, UA-03142 Kiev, Ukraine
[3] Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkiv, Ukraine
来源：
LOW TEMPERATURE PHYSICS | 2024年 / 50卷 / 06期
关键词：
RF SQUID; hysteretic and nonhysteretic regimes; Josephson junction; critical current control; high-frequency field; conversion coefficient; QUANTUM INTERFERENCE;
D O I：
10.1063/10.0026089
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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 beta(L), 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 circuit driven by RF current at a frequency close to the resonance frequency of the circuit. It is shown that parameter beta(L), which distinguishes between hysteretic and nonhysteretic regimes, can be effectively adjusted to a desired value by applying the high-frequency field of a certain amplitude and frequency much higher than circuit resonance frequency. A significant increase in the conversion factor and sensitivity of the RF SQUID during this adjustment is discussed.
引用
收藏
页码：497 / 501
页数：5
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