吉首大学学报（自然科学版）2025，Vol.46Issue(5)：45-52,8.DOI:10.13438/j.cnki.jdzk.2025.05.007
双层六方声子晶体的谷现象及角态实现
Valley Phenomena and Corner State Realization in Bilayer Hexagonal Phononic Crystals
刘芳 1王甲豪 1孔鹏 1赵鹤平 1邓科2
作者信息
- 1. 吉首大学物理与机电工程学院,湖南吉首 416000
- 2. 长沙理工大学物理与电子科学学院,湖南长沙 410114
- 折叠
摘要
Abstract
Benefiting from valley-selective excitation and suppressed acoustic backscattering in valley to-pological insulators,we designed a mirror-symmetric bilayer hexagonal phononic crystal.Breaking spa-tial symmetry by adjusting the scatterers' orientation induces valley states.Numerical simulations show different valley topological phases emerge under varying scatterer angles,enabling selective path trans-port.Furthermore,constructing a triangular supercell with two valley topological phases in the bilayer hexagonal phononic crystal yields two sets of triangular corner states.关键词
双层六方声子晶体/谷拓扑/角态Key words
bilayer hexagonal phononic crystals/valley topology/corner state分类
数理科学引用本文复制引用
刘芳,王甲豪,孔鹏,赵鹤平,邓科..双层六方声子晶体的谷现象及角态实现[J].吉首大学学报（自然科学版）,2025,46(5):45-52,8.
