Electron Correlation and Pairing States in Superconductors without Inversion Symmetry
Electron Correlation and Pairing States in Superconductors without Inversion Symmetry
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DOI：
10.1143/jpsj.76.051008
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发表时间：
2007-02
影响因子：
1.7
通讯作者：
S. Fujimoto
中科院分区：
文献类型：
--
作者：
S. Fujimoto
本文是对非中心对称超导体理论研究的教学回顾，特别强调了电子关联所起的作用，这对于重费米子系统是很重要的。我们考察了破坏宇称的超导电性的独特性质，如自旋单态和三态的混合、反常的顺磁性、大的泡利极限场、磁电效应、螺旋涡旋相和反常霍尔效应。指出这些显著的特征被强的电子关联效应所强化，因此在没有反转对称性的重费米子超导体中表现得尤为突出。我们还讨论了在重费米子系统CePt3Si中可能实现的配对态。
This article is a pedagogical review of theoretical studies of noncentrosymmetric superconductors with particular emphasis on the role played by electron correlation, which is important for heavy fermion systems. We survey unique properties of parity-violated superconductivity such as the admixture of spin singlet and triplet states, unusual paramagnetism, large Pauli limiting fields, magnetoelectric effects, the helical vortex phase, and the anomalous Hall effect. It is pointed out that these remarkable features are strengthened by a strong electron correlation effect, and thus are prominent in heavy fermion superconductors without inversion symmetry. We also discuss possible pairing states realized in the heavy fermion system CePt3Si.