Magnetization-direction tunable nodal-line and Weyl phases

Magnetization-direction tunable nodal-line and Weyl phases
复制标题

磁化方向可调谐节点线和韦尔相位

DOI:
10.1103/physrevb.98.121103
复制
发表时间:
2018
期刊:
影响因子:
3.7
通讯作者:
Yao Yugui
Yao Yugui
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhang Zeying;Gao Qiang;Liu Cheng-Cheng;Zhang Hongbin;Yao Yugui

文献摘要

被引文献

相似文献

在考虑自旋轨道耦合和不同磁化方向的情况下,提出了一种节点线和Weyl点共存的无自旋对称三波段紧密结合模型。结果表明,磁化方向可以调节Weyl点和节点线的数目。时间反转对称性和镜面反射对称性的结合对保护节点线的简并起着至关重要的作用。此外,我们提出了另一类具有这种非平凡半金属相的材料C4CrX3 (X=Ge和Si)。
We propose a spinless symmetry-based three-band tight-binding model with the coexistence of nodal-line and Weyl points, after considering spin-orbital coupling and different magnetization directions. It is confirmed that the number of Weyl points and nodal lines can be tuned by the magnetization direction. The combination of time-reversal symmetry and mirror reflection symmetry plays a crucial role in protecting the degeneracy of nodal lines. Moreover, we put forward a different class of materials C4CrX3 (X=Ge and Si) which host such a nontrivial semimetallic phase.