Multiple topological phase transitions in a gyromagnetic photonic crystal

Handle URI:
http://hdl.handle.net/10754/623412
Title:
Multiple topological phase transitions in a gyromagnetic photonic crystal
Authors:
Chen, Zeguo ( 0000-0002-2910-8264 ) ; Mei, Jun; Sun, Xiao Cheng; Zhang, Xiujuan ( 0000-0002-2375-3449 ) ; Zhao, Jiajun; Wu, Ying ( 0000-0002-7919-1107 )
Abstract:
We 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.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Chen 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.
Publisher:
American Physical Society (APS)
Journal:
Physical Review A
Issue Date:
19-Apr-2017
DOI:
10.1103/PhysRevA.95.043827
Type:
Article
ISSN:
2469-9926; 2469-9934
Sponsors:
The 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).
Additional Links:
https://journals.aps.org/pra/abstract/10.1103/PhysRevA.95.043827
Appears in Collections:
Articles; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorChen, Zeguoen
dc.contributor.authorMei, Junen
dc.contributor.authorSun, Xiao Chengen
dc.contributor.authorZhang, Xiujuanen
dc.contributor.authorZhao, Jiajunen
dc.contributor.authorWu, Yingen
dc.date.accessioned2017-05-09T08:34:34Z-
dc.date.available2017-05-09T08:34:34Z-
dc.date.issued2017-04-19en
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.en
dc.identifier.issn2469-9926en
dc.identifier.issn2469-9934en
dc.identifier.doi10.1103/PhysRevA.95.043827en
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.en
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).en
dc.publisherAmerican Physical Society (APS)en
dc.relation.urlhttps://journals.aps.org/pra/abstract/10.1103/PhysRevA.95.043827en
dc.rightsArchived with thanks to Physical Review Aen
dc.titleMultiple topological phase transitions in a gyromagnetic photonic crystalen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalPhysical Review Aen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Physics, South China University of Technology, Guangzhou, 510640, , Chinaen
dc.contributor.institutionDepartment of Materials Science and Engineering, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, , Chinaen
kaust.authorChen, Zeguoen
kaust.authorZhang, Xiujuanen
kaust.authorZhao, Jiajunen
kaust.authorWu, Yingen
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