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dc.contributor.authorChen, Zeguo
dc.contributor.authorMei, Jun
dc.contributor.authorSun, Xiao Cheng
dc.contributor.authorZhang, Xiujuan
dc.contributor.authorZhao, Jiajun
dc.contributor.authorWu, Ying
dc.date.accessioned2017-05-09T08:34:34Z
dc.date.available2017-05-09T08:34:34Z
dc.date.issued2017-04-18
dc.identifier.citationChen Z-G, Mei J, Sun X-C, Zhang X, Zhao J, et al. (2017) Multiple topological phase transitions in a gyromagnetic photonic crystal. Physical Review A 95. Available: http://dx.doi.org/10.1103/PhysRevA.95.043827.
dc.identifier.issn2469-9926
dc.identifier.issn2469-9934
dc.identifier.doi10.1103/PhysRevA.95.043827
dc.identifier.urihttp://hdl.handle.net/10754/623412
dc.description.abstractWe present the design of a tunable two-dimensional photonic crystal that exhibits multiple topological phases, including a conventional insulator phase, a quantum spin Hall phase, and a quantum anomalous Hall phase under different combinations of geometric parameters and external magnetic fields. Our photonic crystal enables a platform to study the topology evolution attributed to the interplay between crystalline symmetry and time-reversal symmetry. A four-band tight-binding model unambiguously reveals that the topological property is associated with the pseudospin orientations and that it is characterized by the spin Chern number. The emerging quantum anomalous Hall phase features a single helical edge state that is locked by a specific pseudospin. Simulation results demonstrate that the propagation of such a single helical edge state is robust against magnetic impurities. Potential applications, such as spin splitters, are described.
dc.description.sponsorshipThe work described here was supported by King Abdullah University of Science and Technology and the National Natural Science Foundation of China (Grants No. 11274120 and No. 11574087).
dc.publisherAmerican Physical Society (APS)
dc.relation.urlhttps://journals.aps.org/pra/abstract/10.1103/PhysRevA.95.043827
dc.rightsArchived with thanks to Physical Review A
dc.titleMultiple topological phase transitions in a gyromagnetic photonic crystal
dc.typeArticle
dc.contributor.departmentApplied Mathematics and Computational Science Program
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.identifier.journalPhysical Review A
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Physics, South China University of Technology, Guangzhou, 510640, , China
dc.contributor.institutionDepartment of Materials Science and Engineering, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, , China
kaust.personChen, Zeguo
kaust.personZhang, Xiujuan
kaust.personZhao, Jiajun
kaust.personWu, Ying
refterms.dateFOA2018-06-13T19:00:44Z


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