Chiral phonons in lattices with C₄ symmetry

• Main Authors: Wang, Qianqian, Li, Si, Zhu, Jiaojiao, Chen, Hao, Wu, Weikang, Gao, Weibo, Zhang, Lifa, Yang, Shengyuan A.
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2022
• Subjects: Science::Physics; 2D-Hexagonal; Phonons
• Online Access: https://hdl.handle.net/10356/156339
• Institution: Nanyang Technological University

Chiral phonons were initially proposed and further verified experimentally in two-dimensional (2D) hexagonal crystal lattices. Many intriguing features brought about by chiral phonons are attributed to the pseudoangular momenta which are associated with the threefold rotational symmetry of hexagonal...