Observation of 3D acoustic quantum Hall states

Xuewei Zhang ¹Qiang Wei ¹Mian Peng ¹Weiyin Deng ²Jiuyang Lu ²Xueqin Huang ²Suotang Jia ¹Mou Yan ³Zhengyou Liu ⁴Gang Chen⁵

扫码查看

作者信息

1. State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Laser Spectroscopy,Shanxi University,Taiyuan 030006,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China
2. School of Physics and Optoelectronics,South China University of Technology,Guangzhou 510640,China
3. Key Laboratory of Materials Physics,Ministry of Education,School of Physics,Zhengzhou University,Zhengzhou 450001,China;Laboratory of Zhongyuan Light,School of Physics,Zhengzhou University,Zhengzhou 450001,China;Institute of Quantum Materials and Physics,Henan Academy of Sciences,Zhengzhou 450046,China
4. Key Laboratory of Artificial Micro-and Nanostructures of Ministry of Education and School of Physics and Technology,Wuhan University,Wuhan 430072,China;Institute for Advanced Studies,Wuhan University,Wuhan 430072,China
5. State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Laser Spectroscopy,Shanxi University,Taiyuan 030006,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China;Key Laboratory of Materials Physics,Ministry of Education,School of Physics,Zhengzhou University,Zhengzhou 450001,China;Laboratory of Zhongyuan Light,School of Physics,Zhengzhou University,Zhengzhou 450001,China;Institute of Quantum Materials and Physics,Henan Academy of Sciences,Zheng
折叠

Abstract

Quantum Hall effect,the quantized transport phenomenon of electrons under strong magnetic fields,remains one of the hottest research topics in condensed matter physics since its discovery in 2D elec-tronic systems.Recently,as a great advance in the research of quantum Hall effects,the quantum Hall effect in 3D systems,despite its big challenge,has been achieved in the bulk ZrTe5 and Cd3As2 materials.Interestingly,Cd3As2 is a Weyl semimetal,and quantum Hall effect is hosted by the Fermi arc states on opposite surfaces via the Weyl nodes of the bulk,and induced by the unique edge states on the bound-aries of the opposite surfaces.However,such intriguing edge state distribution has not yet been experi-mentally observed.Here,we aim to reveal experimentally the unusual edge states of Fermi arcs in acoustic Weyl system with the aid of pseudo-magnetic field.Benefiting from the macroscopic nature of acoustic crystals,the pseudo-magnetic field is introduced by elaborately designed the gradient on-site energy,and the edge states of Fermi arcs on the boundaries of the opposite surfaces are unambigu-ously demonstrated in experiments.Our system serves as an ideal and highly tunable platform to explore the Hall physics in 3D system,and has the potential in the application of new acoustic devices.

Key words

Quantum Hall effects/Acoustic crystals/Pseudo-magnetic field/Landau levels/Edge states

引用本文复制引用

基金项目

National Key R & D Program of China(2022YFA1404500)

National Key R & D Program of China(2022YFA1404900)

National Natural Science Foundation of China(11890701)

National Natural Science Foundation of China(11974120)

National Natural Science Foundation of China(11974005)

National Natural Science Foundation of China(12034012)

National Natural Science Foundation of China(12074128)

National Natural Science Foundation of China(12074232)

National Natural Science Foundation of China(12125406)

National Natural Science Foundation of China(12204290)

National Natural Science Foundation of China(12374360)

National Postdoctoral Program(BX20220195)

National Postdoctoral Program(2023M732146)

Shanxi"1331 Project",and Crossdisciplinary Innovative Research Group Project of Henan Province(232300421004)

出版年

2024

科学通报(英文版)

中国科学院

科学通报(英文版)

CSTPCD

ISSN：1001-6538

参考文献量1

段落导航