Three-dimensional valley-contrasting sound

• Main Authors: Xue, Haoran, Ge, Yong, Cheng, Zheyu, Guan, Yi-Jun, Zhu, Jiaojiao, Zou, Hong-Yu, Yuan, Shou-Qi, Yang, Shengyuan A., Sun, Hong-Xiang, Chong, Yidong, Zhang, Baile
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2024
• Subjects: Physics; Acoustic crystal; Edge state
• Online Access: https://hdl.handle.net/10356/180458
• Institution: Nanyang Technological University

Spin and valley are two fundamental properties of electrons in crystals. The similarity between them is well understood in valley-contrasting physics established decades ago in two-dimensional (2D) materials like graphene-with broken inversion symmetry, the two valleys in graphene exhibit opposite o...