谷边缘态作为连续域中的束缚态

作     者：尹顺达 叶莉萍 何海龙 黄学勤 柯满竹 邓伟胤 陆久阳 刘正猷 Shunda Yin;Liping Ye;Hailong He;Xueqin Huang;Manzhu Ke;Weiyin Deng;Jiuyang Lu;Zhengyou Liu

作者机构：Key Laboratory of Artificial Micro-and Nanostructures of Ministry of EducationSchool of Physics and TechnologyWuhan UniversityWuhan 430072China School of Physics and OptoelectronicsSouth China University of TechnologyGuangzhou 510640China Institute for Advanced StudiesWuhan UniversityWuhan 430072China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2024年第69卷第11期

页      面：1660-1666页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：supported by the National Key R&D Program of China (2022YFA1404500,and 2022YFA1404900) National Natural Science Foundation of China (12074128,12004286,12104347,12222405,12374419,and 12374409) Guangdong Basic and Applied Basic Research Foundation (2021B1515020086,and 2022B1515020102) 

主　　题：Topological BICs Valley edge states Phononic crystals Topological insulators 

摘      要：Bound states in the continuum(BICs) are spatially localized states with energy embedded in the continuum 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.