Anomalous Phase Shift of Quantum Oscillations in 3D Topological Semimetals

Wang, C. M.1,2; Lu, Hai-Zhou1; Shen, Shun-Qing3

2016-08-10

10.1103/PhysRevLett.117.077201

PHYSICAL REVIEW LETTERS   影响因子和分区

0031-9007

1079-7114

Berry phase physics is closely related to a number of topological states of matter. Recently discovered topological semimetals are believed to host a nontrivial pi Berry phase to induce a phase shift of +/- 1/8 in the quantum oscillation (+ for hole and - for electron carriers). We theoretically study the Shubnikov-de Haas oscillation of Weyl and Dirac semimetals, taking into account their topological nature and inter-Landau band scattering. For a Weyl semimetal with broken time-reversal symmetry, the phase shift is found to change nonmonotonically and go beyond known values of +/- 1/8 and +/- 5/8, as a function of the Fermi energy. For a Dirac semimetal or paramagnetic Weyl semimetal, time-reversal symmetry leads to a discrete phase shift of +/- 1/8 or +/- 5/8. Different from the previous works, we find that the topological band inversion can lead to beating patterns in the absence of Zeeman splitting. We also find the resistivity peaks should be assigned integers in the Landau index plot. Our findings may account for recent experiments in Cd2As3 and should be helpful for exploring the Berry phase in various 3D systems.

SCI ; EI

英语

NI论文

第一 ; 通讯

Research Grant Council, University Grants Committee, Hong Kong[17301116]

Physics

Physics, Multidisciplinary

WOS:000381478200017

AMER PHYSICAL SOC

20163402724634

Arsenic compounds ; Cadmium compounds ; Fruits ; Quantum theory ; Topology

Agricultural Products:821.4 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Quantum Theory; Quantum Mechanics:931.4

PHYSICS

Web of Science

1.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China
2.Anyang Normal Univ, Sch Phys & Elect Engn, Anyang 455000, Peoples R China
3.Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China

Wang, C. M.,Lu, Hai-Zhou,Shen, Shun-Qing. Anomalous Phase Shift of Quantum Oscillations in 3D Topological Semimetals[J]. PHYSICAL REVIEW LETTERS,2016,117(7).

Wang, C. M.,Lu, Hai-Zhou,&Shen, Shun-Qing.(2016).Anomalous Phase Shift of Quantum Oscillations in 3D Topological Semimetals.PHYSICAL REVIEW LETTERS,117(7).

Wang, C. M.,et al."Anomalous Phase Shift of Quantum Oscillations in 3D Topological Semimetals".PHYSICAL REVIEW LETTERS 117.7(2016).