Observation of topological edge states in thermal diffusion

• Main Authors: Hu, Hao, Han, Song, Yang, Yihao, Liu, Dongjue, Xue, Haoran, Liu, Gui-Geng, Cheng, Zheyu, Wang, Qi Jie, Zhang, Shuang, Zhang, Baile, Luo, Yu
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2022
• Subjects: Engineering; Thermal Diffusion; Thermal Functional Materials
• Online Access: https://hdl.handle.net/10356/162857
• Institution: Nanyang Technological University

The topological band theory predicts that bulk materials with nontrivial topological phases support topological edge states. This phenomenon is universal for various wave systems and has been widely observed for electromagnetic and acoustic waves. Here, we extend the notion of band topology from wav...