ABSTRACT The reflection characteristics of the superconductor-dielectric-superconductor (SMS) junction at the near-zero permittivity region are investigated in this paper. Based on the London model, the closed-form solution of the reflectivity as a function of the ambient temperature and the external magnetic field is derived and discussed. A simulation example of the niobium-magnesium oxide-niobium junction is given to illustrate how the reflectivity varies with the ambient temperature, the external magnetic field, the incident wave model, and the thickness of the SMS junction. The simulation results show that the total reflection can be observed in the SMS junction over a wide bandwidth.

中文翻译：

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近零介电常数区域超导体-介质-超导体结的反射特性

摘要 本文研究了近零介电常数区域的超导体-电介质-超导体(SMS)结的反射特性。在伦敦模型的基础上，导出并讨论了作为环境温度和外部磁场函数的反射率的闭式解。给出了铌-镁氧化物-铌结的仿真示例，以说明反射率如何随环境温度、外部磁场、入射波模型和 SMS 结的厚度而变化。仿真结果表明，可以在很宽的带宽内观察到 SMS 结中的全反射。