Penetration depth in impure superconductors
Penetration depth in impure superconductors
复制标题
不纯超导体的渗透深度
DOI：
10.1103/physrev.113.1209
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发表时间：
1959
期刊：
影响因子：
--
通讯作者：
P. B. Miller
中科院分区：
文献类型：
--
作者：
P. B. Miller
本文利用Mattis和Barthel导出的杂质超导体电流密度随矢势变化的方程，计算了杂质超导体穿透深度随温度的变化关系。给出了不同相干距离与平均自由程之比以及不同相干距离与伦敦穿透深度之比的计算结果。结果被应用到锡作为一个例子，和明显的偏差从[1-（T T c）4]-1 2的温度依赖性的穿透深度被发现的所有值的平均自由程。
The equation giving the current density as a functional of the vector potential for an impurity superconductor derived by Mattis and Bardeen is used to compute the temperature dependence of the penetration depth of impure superconductors. Results of calculations for different values of the ratio of the coherence distance to the mean free path and also for different values of the ratio of the coherence distance to the London penetration depth are given. The results are applied to tin as an example, and appreciable deviations from the [1−(T T c) 4]− 1 2 temperature dependence of the penetration depth are found for all values of the mean free path.