3D Quantum Hall Effect of Fermi Arc in Topological Semimetals

Wang, C. M.1,2,3,4; Sun, Hai-Peng1,2,4; Lu, Hai-Zhou1,2,4; Xie, X. C.5,6

2017-09-28

10.1103/PhysRevLett.119.136806

PHYSICAL REVIEW LETTERS   影响因子和分区

0031-9007

1079-7114

The quantum Hall effect is usually observed in 2D systems. We show that the Fermi arcs can give rise to a distinctive 3D quantum Hall effect in topological semimetals. Because of the topological constraint, the Fermi arc at a single surface has an open Fermi surface, which cannot host the quantum Hall effect. Via a "wormhole" tunneling assisted by theWeyl nodes, the Fermi arcs at opposite surfaces can form a complete Fermi loop and support the quantum Hall effect. The edge states of the Fermi arcs show a unique 3D distribution, giving an example of (d - 2)-dimensional boundary states. This is distinctly different from the surface-state quantum Hall effect from a single surface of topological insulator. As the Fermi energy sweeps through theWeyl nodes, the sheet Hall conductivity evolves from the 1/B dependence to quantized plateaus at the Weyl nodes. This behavior can be realized by tuning gate voltages in a slab of topological semimetal, such as the TaAs family, Cd3As2, or Na3Bi. This work will be instructive not only for searching transport signatures of the Fermi arcs but also for exploring novel electron gases in other topological phases of matter.

SCI ; EI

英语

NI论文

第一 ; 通讯

Science, Technology and Innovation Commission of Shenzhen Municipality[ZDSYS20170303165926217]

Physics

Physics, Multidisciplinary

WOS:000411996200014

AMER PHYSICAL SOC

20174004227668

Arsenic compounds ; Bismuth compounds ; Cadmium compounds ; Electron gas ; Metalloids ; Molecular physics ; Quantum theory ; Sodium compounds ; Tantalum compounds ; Topology

Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Classical Physics; Quantum Theory; Relativity:931

PHYSICS

Web of Science

1.South Univ Sci & Technol China, Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
2.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China
3.Anyang Normal Univ, Sch Phys & Elect Engn, Anyang 455000, Peoples R China
4.Shenzhen Key Lab Quantum Sci & Engn, Shenzhen 518055, Peoples R China
5.Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China
6.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

Wang, C. M.,Sun, Hai-Peng,Lu, Hai-Zhou,et al. 3D Quantum Hall Effect of Fermi Arc in Topological Semimetals[J]. PHYSICAL REVIEW LETTERS,2017,119(13).

Wang, C. M.,Sun, Hai-Peng,Lu, Hai-Zhou,&Xie, X. C..(2017).3D Quantum Hall Effect of Fermi Arc in Topological Semimetals.PHYSICAL REVIEW LETTERS,119(13).

Wang, C. M.,et al."3D Quantum Hall Effect of Fermi Arc in Topological Semimetals".PHYSICAL REVIEW LETTERS 119.13(2017).