Controllable Weyl nodes and Fermi arcs in a light-irradiated carbon allotrope

Ji, Ruoning1,2,3; Ding, Xianyong1,2,3; Zhan, Fangyang1,2,3; Xiao, Xiaoliang1,2,3; Fan, Jing4; Ning, Zhen1,2,3; Wang, Rui1,2,3,5

2023-11-17

10.1103/PhysRevB.108.205139

PHYSICAL REVIEW B   影响因子和分区

2469-9950

2469-9969

The precise control of Weyl physics in realistic materials offers a promising avenue to construct accessible topological quantum systems, and thus draws widespread attention in condensed-matter physics. Here, based on first-principles calculations, the maximally localized Wannier function based tight-binding model, and Floquet theorem, we study the light-manipulated evolution of Weyl physics in a carbon allotrope C6 crystallizing a face centered orthogonal structure (fco-C6), an ideal Weyl semimetal with two pairs of Weyl nodes, under irradiation of a linearly polarized light. We show that the positions of Weyl nodes and Fermi arcs can be accurately controlled by changing the light intensity. Moreover, we employ a low-energy effective k center dot p model to understand light controllable Weyl physics. The results indicate that the symmetry of light-irradiated fco-C6 can be selectively preserved, which guarantees that the light-manipulated Weyl nodes can only move in the high-symmetry plane in momentum space. Our work not only demonstrates the efficacy of employing periodic driving light fields as an efficient approach to manipulate the Weyl physics, but also paves a reliable pathway for designing accessible topological states under light irradiation.

SCI ; EI

英语

其他

National Natural Sci-ence Foundation of China (NSFC)["12222402","12304191","12074108","92365101"] ; Natural Science Foundation of Chongqing[CSTB2023NSCQ-JQX0024]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001112328100003

AMER PHYSICAL SOC

20234815134709

Irradiation ; Orthogonal functions ; Quantum optics ; Topology

Light/Optics:741.1 ; Chemical Products Generally:804 ; Mathematics:921 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Quantum Theory; Quantum Mechanics:931.4

PHYSICS

Web of Science

1.Chongqing Univ, Inst Struct & Funct, Chongqing 400044, Peoples R China
2.Chongqing Univ, Dept Phys, Chongqing 400044, Peoples R China
3.Chongqing Univ, Chongqing Key Lab Strongly Coupled Phys, Chongqing 400044, Peoples R China
4.Southern Univ Sci & Technol, Ctr Computat Sci & Engn, Shenzhen 518055, Peoples R China
5.Chongqing Univ, Ctr Quantum Mat & Devices, Chongqing 400044, Peoples R China

Ji, Ruoning,Ding, Xianyong,Zhan, Fangyang,et al. Controllable Weyl nodes and Fermi arcs in a light-irradiated carbon allotrope[J]. PHYSICAL REVIEW B,2023,108(20).

Ji, Ruoning.,Ding, Xianyong.,Zhan, Fangyang.,Xiao, Xiaoliang.,Fan, Jing.,...&Wang, Rui.(2023).Controllable Weyl nodes and Fermi arcs in a light-irradiated carbon allotrope.PHYSICAL REVIEW B,108(20).

Ji, Ruoning,et al."Controllable Weyl nodes and Fermi arcs in a light-irradiated carbon allotrope".PHYSICAL REVIEW B 108.20(2023).