Observations of acoustic Wannier configurations revealing topological corner anomaly

Affiliations

• ¹ Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
• ² University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: hjia@mail.ioa.ac.cn.
• ³ School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510641, China; Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China. Electronic address: phjylu@scut.edu.cn.
• ⁴ Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China.
• ⁵ Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China; Institute for Advanced Studies, Wuhan University, Wuhan 430072, China. Electronic address: zyliu@whu.edu.cn.
• ⁶ Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: jyang@mail.ioa.ac.cn.