Valley edge states as bound states in the continuum

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外文摘要：Bound states in the continuum(BICs)are spatially localized states with energy embedded in the contin-uum spectrum of extended states.The combination of BICs physics and nontrivial band topology theory givs rise to topological BICs,which are robust against disorders and meanwhile,the merit of conventional BICs is attracting wide attention recently.Here,we report valley edge states as topological BICs,which appear at the domain wall between two distinct valley topological phases.The robustness of such BICs is demonstrated.The simulations and experiments show great agreement.Our findings of valley related topological BICs shed light on both BICs and valley physics,and may foster innovative applications of topological acoustic devices.

外文关键词：

Topological BICsValley edge statesPhononic crystalsTopological insulators

作者：

Shunda Yin、Liping Ye、Hailong He、Xueqin Huang、Manzhu Ke、Weiyin Deng、Jiuyang Lu、Zhengyou Liu

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作者单位：

Key Laboratory of Artificial Micro-and Nanostructures of Ministry of Education,School of Physics and Technology,Wuhan University,Wuhan 430072,China

School of Physics and Optoelectronics,South China University of Technology,Guangzhou 510640,China

Institute for Advanced Studies,Wuhan University,Wuhan 430072,China

基金：

National Key R&D Program of ChinaNational Key R&D Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaGuangdong Basic and Applied Basic Research FoundationGuangdong Basic and Applied Basic Research Foundation

项目编号：

2022YFA14045002022YFA14049001207412812004286121043471222240512374419123744092021B15150200862022B1515020102

出版年：

2024

DOI：

10.1016/j.scib.2024.04.007

科学通报(英文版)

中国科学院

科学通报(英文版)

CSTPCD

ISSN：1001-6538

年,卷(期)：2024.69(11)