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Acoustic valley edge states in a graphene-like system with sub-wavelength resonator
Jiang H(姜恒); Chen M(陈猛); Liu Y(刘宇); Yang T(杨涛); Xu WS(徐文帅); Liu YH; Zhang MG; Wang YR(王育人)
Corresponding AuthorWang, Yuren(yurenwang@imech.ac.cn)
Source PublicationJOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
2019-07-01
Volume146Issue:1Pages:736-741
ISSN0001-4966
AbstractRecently, the study of topological phase transitions and edge states for acoustic wave systems has become a research hotspot. However, most current studies on topological edge states are based on Bragg scattering, which is not practical to apply in situations involving low-frequency sound because of the large structural dimensions. Therefore, the authors construct, in this study, a graphene-like structure based on a sub-wavelength resonant unit Helmholtz resonator and adjust the acoustic capacitance diameter of adjacent units to change the local resonance frequency, and thereby impose the degeneracy of the Dirac cone and topological spin states, which is characterized by valley Chern numbers of opposite sign. The authors also check topological valley edge states at zigzag and armchair interfaces and find that gapless topological valley edge states only appear at zigzag interfaces, whereas armchair interfaces host gap edge states. Moreover, the results show that the transmission properties of edge states in a zigzag rectangular waveguide are immune to backscattering and defects. (C) 2019 Acoustical Society of America.
DOI10.1121/1.5115016
Indexed BySCI
Language英语
WOS IDWOS:000478628800078
WOS Research AreaAcoustics ; Audiology & Speech-Language Pathology
WOS SubjectAcoustics ; Audiology & Speech-Language Pathology
Funding ProjectNational Natural Science Foundation of China[11602269] ; National Natural Science Foundation of China[11802213] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040301] ; Research Program of Beijing[Z161100002616034] ; Research Program of Beijing[Z171100000817010]
Funding OrganizationNational Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Research Program of Beijing
Classification二类
Ranking1
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79462
Collection国家微重力实验室
Recommended Citation
GB/T 7714
Jiang H,Chen M,Liu Y,et al. Acoustic valley edge states in a graphene-like system with sub-wavelength resonator[J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,2019,146(1):736-741.
APA 姜恒.,陈猛.,刘宇.,杨涛.,徐文帅.,...&王育人.(2019).Acoustic valley edge states in a graphene-like system with sub-wavelength resonator.JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,146(1),736-741.
MLA 姜恒,et al."Acoustic valley edge states in a graphene-like system with sub-wavelength resonator".JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 146.1(2019):736-741.
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