EFFECT OF MEAN FREE PATH ON MAGNETIC BEHAVIOR OF SMALL SUPERCONDUCTING PARTICLES
EFFECT OF MEAN FREE PATH ON MAGNETIC BEHAVIOR OF SMALL SUPERCONDUCTING PARTICLES
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DOI：
10.1103/physrev.158.319
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发表时间：
1967-01-01
期刊：
影响因子：
--
通讯作者：
WYDER, P
中科院分区：
文献类型：
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作者：
STRASSLER, S;WYDER, P
我们计算了零温下任意平均自由程l和任意场的超导球的态密度，其尺寸远小于相干长度λ 0和穿透深度λ。与实验结果一致，理论预测即使l <$0的比值很小，如l <$0 <$0.1，也会与在l→ 0极限下得到的结果有明显的偏差。我们还讨论了任意温度下临界场对平均自由程和边界条件的依赖性。
We have calculated the density of states of superconducting spheres much smaller in size than the coherence length ξ 0 and the penetration depth λ for arbitrary mean free path l and arbitrary fields at zero temperature. In agreement with experimental results, the theory predicts an appreciable deviation from results obtained in the limit l→ 0 even if the ratio l ξ 0 is small, like l ξ 0≃ 0.1. We also discuss the dependence of the critical field on the mean free path and the boundary condition for arbitrary temperatures.