Renormalized quasiparticles, topological monopoles, and superconducting line nodes in heavy-fermion CeTX3 compounds
Renormalized quasiparticles, topological monopoles, and superconducting line nodes in heavy-fermion CeTX3 compounds
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DOI：
10.1103/physrevb.103.l041112
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发表时间：
2020-05
期刊：
影响因子：
--
通讯作者：
V. Ivanov;X. Wan;S. Savrasov
中科院分区：
文献类型：
--
作者：
V. Ivanov;X. Wan;S. Savrasov
非中心的超对称超导体最近引起了很多关注，因为缺乏反转对称性混合物旋转单线和三重态配对状态，这可能可以实现拓扑超导性。在这项工作中，我们研究了反转破裂的CETX $ _3 $重型纤维超导体的电子特性，找到拓扑结节线以及Dirac和Weyl点，这些dirac和weyl点通过相关将其重新赋予更接近Fermi Energy。我们发现Weyl节点线对正常状态的费米表面旋转结构具有重大影响，并导致在超导阶段导致线节点。
Non-centrosymmetric superconductors have recently attracted much attention, since the lack of inversion symmetry mixes spin singlet and triplet pairing states, which may allow the realization of topological superconductivity. In this work, we study the electronic properties of the family of inversion-broken CeTX$_3$ heavy-fermion superconductors, finding topological nodal lines as well as Dirac and Weyl points, which are renormalized closer to the Fermi energy by correlations. We find that the Weyl nodal lines have a substantial effect on the Fermi surface spin structure of the normal state, and lead to line nodes in the superconducting phase.