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Resistance-current curves of high pinning superconductors

机译：高销超导体的电阻-电流曲线

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The lack of universal phenomenological approaches to calculation of the spatioternporal distributions of vector fields in superconducting materials with high anisotropic pinning hinders the analysis of accumulated empirical data. The development of such phenomenology is impeded by the tradition of inadequate description of the transition characteristics of superconductors. Based on a detailed investigation of the current-dependent transitions in commercial niobium-titanium wire, it has been found that, in contrast to the commonly accepted approach, the transition characteristics are conveniently described as the dependences of the resistance on the current, by analogy with the dependences on the temperature and magnetic field. Investigations in the range of magnetic fields from 0 to B-c2 showed that it is the resistance that exhibits exponential variation with the field. The values of resistances determined by extrapolation of the transition curves to a zero current obey the exponential dependence on the magnetic field. The experimental results are consistent with predictions of the statistical model explaining the shape of the transition characteristic as determined by the bulk inhomogeneity of the superconductor. (C) 2005 Pleiades Publishing, Inc.
机译：在具有高各向异性钉扎的超导材料中缺乏通用的现象学方法来计算矢量场的时空分布，这阻碍了对经验数据的分析。这种现象学的发展受到对超导体过渡特性描述不足的传统的阻碍。基于对商用铌钛导线中电流相关跃迁的详细研究，发现与通常接受的方法相比，通过类推，过渡特性可以方便地描述为电阻对电流的依赖关系取决于温度和磁场。在从0到B-c2的磁场范围内的研究表明，电阻随磁场呈指数变化。通过将过渡曲线外推到零电流而确定的电阻值服从对磁场的指数依赖关系。实验结果与统计模型的预测一致，该模型解释了由超导体的整体不均匀性决定的过渡特性的形状。 （C）2005年Pleiades Publishing，Inc.

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