Vortex states in superconductors with strong Pauli-paramagnetic effect
Vortex states in superconductors with strong Pauli-paramagnetic effect
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DOI：
10.1103/physrevb.76.064502
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发表时间：
2007-08
影响因子：
3.7
通讯作者：
M. Ichioka;K. Machida
中科院分区：
文献类型：
--
作者：
M. Ichioka;K. Machida
利用准经典理论分析了强顺磁性超导体的涡旋结构。在那里，感应顺磁矩只在涡旋核心周围积累。我们定量地评估了不同量（如低温比热、奈特位移、磁化强度和通量线晶格（FLL）形状因子）对$H$依赖性中的显著顺磁效应。在$\mathrm{Ce}\mathrm{Co}{\mathrm{in}}_{5}$中，小角中子散射观测到的FLL形状因子的异常$H$依赖性可归因于大的顺磁贡献。
Using quasiclassical theory, we analyze the vortex structure of strong-paramagnetic superconductors. There, induced paramagnetic moments are accumulated exclusively around the vortex core. We quantitatively evaluate the significant paramagnetic effect in the $H$ dependence of various quantities, such as low temperature specific heat, Knight shift, magnetization, and the flux line lattice (FLL) form factor. The anomalous $H$ dependence of the FLL form factor observed by the small angle neutron scattering in $\mathrm{Ce}\mathrm{Co}{\mathrm{In}}_{5}$ is attributable to the large paramagnetic contribution.