Observation of a phononic higher-order Weyl semimetal

• Published in: Nature materials Vol. 20; no. 6; pp. 794 - 799
• Main Authors: Luo, Li, Wang, Hai-Xiao, Lin, Zhi-Kang, Jiang, Bin, Wu, Ying, Li, Feng, Jiang, Jian-Hua
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 01.06.2021; Nature Publishing Group
• Subjects: 639/301/1019/1015; 639/301/119/2792/4128; Acoustics; Anomalies; Biomaterials; Chemistry and Materials Science; Condensed Matter Physics; Crystal structure; Crystallinity; Letter; Materials Science; Metalloids; Metamaterials; Nanotechnology; Optical and Electronic Materials; Physical sciences; Physics; Symmetry; Topology

Weyl semimetals (WSMs) 1 exhibit phenomena such as Fermi arc surface states, pseudo-gauge fields and quantum anomalies that arise from topological band degeneracy in crystalline solids for electrons 1 and metamaterials for photons 2 and phonons 3 . Here we report a higher-order Weyl semimetal (HOWSM...