Approximate analytic expressions for field dependence of surface impedance of high-Tc superconducting thin film in low- and intermediate-field region

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作者：
Jin, B.B. [1 ]
Wu, R.X. [1 ]
机构：
[1] Nanjing Univ of Posts and, Telecommunications, Nanjing, China
来源：
| 1600年 / American Institute of Physics Inc., Woodbury, NY, United States卷 / 84期
关键词：
Theoretical; (THR); -; Experimental; (EXP);
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摘要：
An approximate analytic expression is proposed for field dependence of surface impedance in the low- and intermediate-field region for planar microwave resonators. The expression is based on the resistively shunted Josephson model and modified couple-grain model. It can be of help in understanding the nonlinearity of surface impedance and computer-aided design of superconductive microwave circuits. The expression agrees with measurements quantitatively.
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