Coexistence of charge-2 Dirac and Weyl phonons in chiral space groups

• Main Authors: Liu, Guang, Huang, Zhenqiao, Chen, Zhongjia, Jin, Yuanjun, He, Changchun, Xu, Hu
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2023
• Subjects: Science::Physics; Crystal Symmetry; Sodium Compounds
• Online Access: https://hdl.handle.net/10356/170802
• Institution: Nanyang Technological University

Unconventional topological phonons with unusual properties in crystalline solids have attracted increasing attention. By performing symmetry arguments and low-energy effective Hamiltonian, we confirm the coexistence of charge-2 Dirac and Weyl phonons at high-symmetry points and high-symmetry lines b...