Elementary-flux-pinning potential in type-II superconductors
Elementary-flux-pinning potential in type-II superconductors
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II 型超导体中的基本磁通钉扎势
DOI：
10.1103/physrevb.29.3913
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发表时间：
1984
影响因子：
3.7
通讯作者：
D. Rainer
中科院分区：
文献类型：
--
作者：
E. Thuneberg;J. Kurkijärvi;D. Rainer
用准经典方法研究了准粒子散射小空间范围缺陷引起的磁钉效应。详细介绍了该理论在钉住问题中的应用，并给出了该理论的类输运方程的数值求解方法。在Ginzburg-Landau参数$\ensuremath{\kappa}=0.9$的情况下，计算了纯超导体中具有硬球散射相移的模型杂质在整个温度范围内的钉钉势。对于小空间范围的钉钉中心，准粒子散射产生的钉钉能比传统理论预测的钉钉能高出2个数量级。
Flux pinning brought about by quasiparticle scattering off small-spatial-extent defects is studied using the quasiclassical method. The theory as applied to the pinning problem is presented in detail and an efficient method is given for solving the transportlike equation of the theory numerically. The pinning potential of a model impurity with hard-sphere\char22{}scattering phase shifts is computed over the entire temperature range in a pure superconductor with the Ginzburg-Landau parameter $\ensuremath{\kappa}=0.9$. The pinning energies arising from quasiparticle scattering turn out to be up to 2 orders of magnitude larger than those predicted by the traditional theory for small-spatial-extent pinning centers.