Non-centrosymmetric topological phase probed by non-linear Hall effect  

作　　者：Naizhou Wang Jing-Yang You Aifeng Wang Xiaoyuan Zhou Zhaowei Zhang Shen Lai Yuan-Ping Feng Hsin Lin Guoqing Chang Wei-bo Gao 

机构地区：[1]Division of Physics and Applied Physics,School of Physical and Mathematical Sciences,Nanyang Technological University,Singapore 637371 [2]Department of Physics,National University of Singapore,Singapore 117551 [3]Low Temperature Physics Laboratory,College of Physics and Center for Quantum Materials and Devices,Chongqing University,Chongqing 401331 [4]Centre for Advanced 2D Materials,National University of Singapore,Singapore 117546 [5]Institute of Physics,Academia Sinica,Taipei 11529 [6]The Photonics Institute and Centre for Disruptive Photonic Technologies,Nanyang Technological University,Singapore 637371

出　　处：《National Science Review》2024年第6期173-181,共9页国家科学评论（英文版）

基　　金：support from the Singapore National Research Foundation through its Competitive Research Program(CRP Award No.NRF-CRP21-2018-0007,NRF-CRP22-2019-0004);QEP program,Singapore Ministry of Education(MOE2016-T3-1-006(S)).G.QC.acknowledges the support of the National Research Foundation,Singapore under its Fellowship Award(NRF-NRFF13-2021-0010);the Nanyang Assistant Professorship grant from Nanyang Technological University.J.Y.Y.and Y.P.F.are supported by the Ministry of Education,Singapore under its MOE AcRFTier 3Award MOE2018-T3-1-002;A.F.W and X.Y.Z.are financially supported by the National Natural Science Foundation of China(12004056 and 52071041);H.L.acknowledges the support of research grant 109-2112-M-001-014-MY3.

摘　　要：Non-centrosymmetric topological material has attracted intense attention due to its superior characteristicsas compared with the centrosymmetric one, although probing the local quantum geometry innon-centrosymmetric topological material remains challenging. The non-linear Hall (NLH) effect providesan ideal tool to investigate the local quantum geometry. Here, we report a non-centrosymmetric topologicalphase in ZrTe_(5), probed by using the NLH effect. The angle-resolved and temperature-dependent NLHmeasurement reveals the inversion and ab-plane mirror symmetries breaking at <30 K, consistently withour theoretical calculation. Our findings identify a new non-centrosymmetric phase of ZrTe_(5) and provide aplatform to probe and control local quantum geometry via crystal symmetries.

关 键 词：non-linear Hall effect topological insulator ZrTe_(5) 

分 类 号：O431.2[机械工程—光学工程]