高/低温复合超导体中金属层和超导层间的电流转移
首发时间:2013-01-23
摘要:本文介绍了一种由低温超导体和高温超导体构成的高/低温复合超导体的模型.针对这种高/低温复合超导体的电流转移过程采用二维模型进行了分析,得到了高/低温复合超导体电流转移长度和接触电阻的关系,并比较了高/低温复合超导体和两层圆截面复合超导体转移长度的关系.研究结果表明高/低温复合超导体的电流转移长度要比圆截面复合超导体的电流转移长度小。
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Current transfer between superconductor and matrix in HTS/LTS composite conductors
Abstract:A new composite conductor model made of low temperature superconductor (LTS) and high temperature superconductor (HTS) is presented; the current transfer between LTS and HTS is analyzed by two-dimensional model. The relationship between the current transferring length and contact resistance is obtained according to geometrical structure of this model, the transferring lengths of both of the HTS/LTS composite conductor(NbTi/Cu/YBCO) and the cylindrical conductor(NbTi/Cu) with two layers are compared. The result suggests that the length of composite conductor is smaller than that of the LTS conductor consisted of a superconductor and metal matrix.
Keywords: HTS/LTS composite conductor current transferring length contact resistance
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