Topological refraction in dual-band valley sonic crystals

• Main Authors: Jia, Ding, Ge, Yong, Xue, Haoran, Yuan, Shou-qi, Sun, Hong-xiang, Yang, Yihao, Liu, Xiao-jun, Zhang, Baile
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2021
• Subjects: Science::Physics; Acoustic Wave Phenomena; Acoustics
• Online Access: https://hdl.handle.net/10356/151103
• Institution: Nanyang Technological University

Valley pseudospins, as quantum states of energy extrema in momentum space, have been introduced from condensed-matter systems into classical sound systems, and several valley sonic crystals (VSCs) have been realized experimentally. However, in the existing VSCs, topological kink states generally app...