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
影响因子:
3.7
通讯作者:
Yao Yugui
中科院分区:
文献类型:
--
作者:
Zhang Zeying;Gao Qiang;Liu Cheng-Cheng;Zhang Hongbin;Yao Yugui
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.