Band Signatures for Strong Nonlinear Hall Effect in Bilayer WTe2

Du, Z. Z.1,2,3,4; Wang, C. M.1,2,3,5; Lu, Hai-Zhou1,2,3; Xie, X. C.6,7

2018-12-26

10.1103/PhysRevLett.121.266601

PHYSICAL REVIEW LETTERS   影响因子和分区

0031-9007

1079-7114

Unconventional responses upon breaking discrete or crystal symmetries open avenues for exploring emergent physical systems and materials. By breaking inversion symmetry, a nonlinear Hall signal can be observed, even in the presence of time-reversal symmetry, quite different from the conventional Hall effects. Low-symmetry two-dimensional materials are promising candidates for the nonlinear Hall effect, but it is less known when a strong nonlinear Hall signal can be measured, in particular, its connections with the band-structure properties. By using model analysis, we find prominent nonlinear Hall signals near tilted band anticrossings and band inversions. These band signatures can be used to explain the strong nonlinear Hall effect in the recent experiments on two-dimensional WTe2. This Letter will be instructive not only for analyzing the transport signatures of the nonlinear Hall effect but also for exploring unconventional responses in emergent materials.

SCI ; EI

英语

NI论文

第一 ; 通讯

Science, Technology and Innovation Commission of Shenzhen Municipality[ZDSYS201703031 65926217] ; Science, Technology and Innovation Commission of Shenzhen Municipality[JCYJ20170412152620376]

Physics

Physics, Multidisciplinary

WOS:000454432900010

AMER PHYSICAL SOC

20190106327482

Crystal symmetry

Electricity: Basic Concepts and Phenomena:701.1 ; Crystal Lattice:933.1.1

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
3.Shenzhen Key Lab Quantum Sci & Engn, Shenzhen 518055, Peoples R China
4.Southeast Univ, Sch Phys, Nanjing 211189, Jiangsu, Peoples R China
5.Shanghai Normal Univ, Dept Phys, Shanghai 200234, Peoples R China
6.Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China
7.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

Du, Z. Z.,Wang, C. M.,Lu, Hai-Zhou,et al. Band Signatures for Strong Nonlinear Hall Effect in Bilayer WTe2[J]. PHYSICAL REVIEW LETTERS,2018,121(26).

Du, Z. Z.,Wang, C. M.,Lu, Hai-Zhou,&Xie, X. C..(2018).Band Signatures for Strong Nonlinear Hall Effect in Bilayer WTe2.PHYSICAL REVIEW LETTERS,121(26).

Du, Z. Z.,et al."Band Signatures for Strong Nonlinear Hall Effect in Bilayer WTe2".PHYSICAL REVIEW LETTERS 121.26(2018).