超导体的电接触

Electrical Contacts, 1988., Proceedings of the Thirty Fourth Meeting of the IEEE Holm Conference on Electrical Contacts Pub Date : 1900-01-01 DOI:10.1109/33.19008

J. Talvacchio

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引用次数: 27

摘要

综述了常规超导体和高温氧化物超导体的电接触。在技术上重要的传统超导体是铌及其合金和化合物，氧化物超导体以YBa/sub 2/Cu/sub 3/O/sub 7/为典型。超导体的三种不同形式可以被考虑:用于电子应用的薄膜，用于磁铁和大规模应用的多丝线，以及用于测量超导材料载流能力的单丝或胶带。结论是，与传统超导体的电接触相对简单。然而，接触高温氧化物超导体是困难的，不仅因为特征长度很短，0.1到10nm，而且因为它们强烈依赖于晶体取向，并且氧化物在表面的距离内往往是化学不稳定的。

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Electrical contact to superconductors

Electrical contacts to conventional superconductors and high-critical-temperature oxide superconductors are reviewed. The technologically important conventional superconductors considered are Nb and its alloys and compounds, the oxide superconductors are typified by YBa/sub 2/Cu/sub 3/O/sub 7/. Three distinct forms in which the superconductor can be fabricated are considered: thin films for electronics applications, multifilamentary wires for magnets and large-scale applications, and monofilaments or tapes for measurements of the current-carrying capability of a superconducting material. It is concluded that electrical contact to conventional superconductors is relatively straightforward. However, contacting the high-temperature oxide superconductors is difficult not only because the characteristic lengths are short, 0.1 to 10 nm, but because they are strongly dependent on crystal orientation and the oxides tend to be chemically unstable within that distance of the surface.<>

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来源期刊

Electrical Contacts, 1988., Proceedings of the Thirty Fourth Meeting of the IEEE Holm Conference on Electrical Contacts

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