Zak phases and band properties in acoustic metamaterials with negative modulus or negative density

被引：26

作者：

Fan, Li ^{[1
]}

Yu, Wei-wei ^{[1
]}

Zhang, Shu-yi ^{[1
]}

Zhang, Hui ^{[1
]}

Ding, Jin ^{[1
]}

机构：

[1] Nanjing Univ, Inst Acoust, Lab Modern Acoust, Nanjing 210093, Jiangsu, Peoples R China

来源：

PHYSICAL REVIEW B | 2016年 / 94卷 / 17期

基金：

中国国家自然科学基金;

关键词：

CRYSTALS;

D O I：

10.1103/PhysRevB.94.174307

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zak phases in two types of acoustic metamaterials with negative density or negative modulus are studied. Different from phononic crystals based on Bragg scattering, extraordinary performance in acoustic metamaterials originates from local resonance. We find that the Zak phases inmetamaterials are determined by the resonances of scatterers, side pipes, ormembranes. Additionally, it is observed that the topological transition points, symmetrical properties of edge states, input impedances, and reflection phases in forbidden bands are all related to the resonances of the scatterers, and the relationship can be used to create surface states at the interface of two types of acoustic metamaterials.

引用

页数：7

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