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dc.contributor.authorWu, Shi qiao
dc.contributor.authorWu, Ying
dc.contributor.authorMei, Jun
dc.date.accessioned2017-12-05T06:12:00Z
dc.date.available2017-12-05T06:12:00Z
dc.date.issued2017-11-27
dc.identifier.citationWu S qiao, Wu Y, Mei J (2017) Topological helical edge states in water waves over a topographical bottom. New Journal of Physics. Available: http://dx.doi.org/10.1088/1367-2630/aa9cdb.
dc.identifier.issn1367-2630
dc.identifier.doi10.1088/1367-2630/aa9cdb
dc.identifier.urihttp://hdl.handle.net/10754/626287
dc.description.abstractWe present the discovery of topologically protected helical edge states in water wave systems, which are realized in water wave propagating over a topographical bottom whose height is modulated periodically in a two-dimensional triangular pattern. We develop an effective Hamiltonian to characterize the dispersion relation and use spin Chern numbers to classify the topology. Through full wave simulations we unambiguously demonstrate the robustness of the helical edge states which are immune to defects and disorders so that the backscattering loss is significantly reduced. A spin splitter is designed for water wave systems, where helical edge states with different spin orientations are spatially separated with each other, and potential applications are discussed.
dc.description.sponsorshipThe work described here is supported by the National Natural Science Foundation of China (Grant Nos.11274120 and 11574087) and King Abdullah University of Science and Technology (KAUST)
dc.publisherIOP Publishing
dc.relation.urlhttp://iopscience.iop.org/article/10.1088/1367-2630/aa9cdb
dc.rightsThis is an author-created, un-copyedited version of an article accepted for publication/published in New Journal of Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://doi.org/10.1088/1367-2630/aa9cdb. As the Version of Record of this article is going to be / has been published on a gold open access basis under a CC BY 3.0 licence, this Accepted Manuscript is available for reuse under a CC BY 3.0 licence immediately Everyone is permitted to use all or part of the original content in this article, provided that they adhere to all the terms of the licence https://creativecommons.org/licences/by/3.0
dc.rights.urihttps://creativecommons.org/licences/by/3.0
dc.subjecthelical edge states
dc.subjectwater wave
dc.subjecttopology
dc.titleTopological helical edge states in water waves over a topographical bottom
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.identifier.journalNew Journal of Physics
dc.eprint.versionPost-print
dc.contributor.institutionSouth China University of Technology, Guangzhou, 510640, CHINA
dc.contributor.institutionDepartment of Physics, South China University of Technology, 381 Wushan Road, Guangzhou 510640, Guangzhou, CHINA
kaust.personWu, Ying
refterms.dateFOA2018-06-14T02:57:11Z


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This is an author-created, un-copyedited version of an article accepted for publication/published in New Journal of Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://doi.org/10.1088/1367-2630/aa9cdb. 
As the Version of Record of this article is going to be / has been published on a gold open access basis under a CC BY 3.0 licence, this Accepted Manuscript is available for reuse under a CC BY 3.0 licence immediately Everyone is permitted to use all or part of the original content in this article, provided that they adhere to all the terms of the licence https://creativecommons.org/licences/by/3.0
Except where otherwise noted, this item's license is described as This is an author-created, un-copyedited version of an article accepted for publication/published in New Journal of Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://doi.org/10.1088/1367-2630/aa9cdb. As the Version of Record of this article is going to be / has been published on a gold open access basis under a CC BY 3.0 licence, this Accepted Manuscript is available for reuse under a CC BY 3.0 licence immediately Everyone is permitted to use all or part of the original content in this article, provided that they adhere to all the terms of the licence https://creativecommons.org/licences/by/3.0