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arXiv 0904.3474cond-mat.supr-concond-mat.mtrl-sci
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载流超导导线中耗散结构的出现

Emergence of dissipative structures in current-carrying superconducting wires

G. A. Levin, P. N. Barnes, J. P. Rodriguez, J. A. Connors, J. S. Bulmer

摘要:

讨论了载流高温超导导线中自发温度和临界电流空间调制的出现。沿导线的临界电流在3 - 10 mm尺度上的调制迫使一部分传输电流在超导膜和附着在其上的正常金属稳定剂之间的电阻界面上交叉。这产生了额外的热量,使得这种结构能够自我维持。本文还讨论了这种现象的稳定性和实验观测条件。

英文摘要:

We discuss the emergence of a spontaneous temperature and critical current spatial modulation in current-carrying high temperature superconducting wire. The modulation of the critical current along the wire on a scale of 3 - 10 mm forces a fraction of the transport current to crisscross the resistive interface between the superconducting film and normal metal stabilizer attached to it. This generates additional heat that allows such a structure to be self sustainable. Stability and the conditions for experimental observation of this phenomenon are also discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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