Diverse degeneracy types in topological phonons: A perspective

Qin，Peiyao1; Liu，Guang2; Wu，Peng1; Xu，Hu1,3

2024-01-15

英语

The study of novel topological quantum states is gaining significant attention. Recently, the concept of topology has expanded from fermions to bosons, leading to the new era of topological phonons. In crystals, distinctive symmetry constraints lead to diverse excitations among quasiparticles. This makes different patterns of phonon degeneracy in the spectrum. In this perspective, we review recent advances in various types of degeneracies found in topological phonons, including nodal points, nodal lines or rings, and unconventional nodal points with higher Chern numbers. We conclude by looking ahead at exciting possibilities in topological phonons.

10.1063/5.0186917

Applied Physics Letters

124

3

0003-6951

SCI ; EI

第一 ; 通讯

2-s2.0-85182734478

Scopus

PHYSICS

1.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
2.Hunan Provincial Key Laboratory of Intelligent Sensors and Advanced Sensor Materials,School of Physics and Electronics,Hunan University of Science and Technology,Xiangtan,411201,China
3.Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (Guangdong),Shenzhen,518045,China

Qin，Peiyao,Liu，Guang,Wu，Peng,et al. Diverse degeneracy types in topological phonons: A perspective. 2024-01-15.