Effect of voltage bias on the dc SQUID characteristics

被引:6
|
作者
Kiviranta, M [1 ]
Seppä, H [1 ]
机构
[1] VTT Automat, Measurement Technol, Espoo 02150, Finland
关键词
Magnetic Material; Bias Voltage; Analytical Calculation; Conversion Ratio; Series Reactance;
D O I
10.1023/A:1017549632586
中图分类号
O59 [应用物理学];
学科分类号
摘要
The dynamics of the dc SQUID, when voltage biased through an inductor, is computed by numerical simulation and perturbative analytical calculation. We find that the dynamic resistance decreases from its current-biased value at low bias voltages, where the inductive series reactance no longer separates the Josephson voltage oscillation from the bias source. the flux-to current conversion ratio, however, remains almost unaffected. This effect is sometimes important in setups, where a second SQUID is usec as a readout amplifier.
引用
收藏
页码:127 / 136
页数:10
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