Topological edge modes in multilayer graphene systems

Handle URI:
http://hdl.handle.net/10754/621510
Title:
Topological edge modes in multilayer graphene systems
Authors:
Ge, Lixin; Wang, Li; Xiao, Meng; Wen, Weijia; Chan, C. T.; Han, Dezhuan
Abstract:
Plasmons can be supported on graphene sheets as the Dirac electrons oscillate collectively. A tight-binding model for graphene plasmons is a good description as the field confinement in the normal direction is strong. With this model, the topological properties of plasmonic bands in multilayer graphene systems are investigated. The Zak phases of periodic graphene sheet arrays are obtained for different configurations. Analogous to Su-Schrieffer-Heeger (SSH) model in electronic systems, topological edge plasmon modes emerge when two periodic graphene sheet arrays with different Zak phases are connected. Interestingly, the dispersion of these topological edge modes is the same as that in the monolayer graphene and is invariant as the geometric parameters of the structure such as the separation and period change. These plasmonic edge states in multilayer graphene systems can be further tuned by electrical gating or chemical doping. © 2015 Optical Society of America.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Ge L, Wang L, Xiao M, Wen W, Chan CT, et al. (2015) Topological edge modes in multilayer graphene systems. Optics Express 23: 21585. Available: http://dx.doi.org/10.1364/OE.23.021585.
Publisher:
The Optical Society
Journal:
Optics Express
Issue Date:
10-Aug-2015
DOI:
10.1364/OE.23.021585
PubMed ID:
26368137
Type:
Article
ISSN:
1094-4087
Sponsors:
This work is supported the National Natural Science Foundation of China (Grant No. 11304038) and the Fundamental Research Funds for the Central Universities (Grant No. CQDXWL-2014-Z005). Work in Hong Kong is supported by Hong Kong Research Grant Council AOE/P-02/12.
Appears in Collections:
Articles; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorGe, Lixinen
dc.contributor.authorWang, Lien
dc.contributor.authorXiao, Mengen
dc.contributor.authorWen, Weijiaen
dc.contributor.authorChan, C. T.en
dc.contributor.authorHan, Dezhuanen
dc.date.accessioned2016-11-03T08:31:04Z-
dc.date.available2016-11-03T08:31:04Z-
dc.date.issued2015-08-10en
dc.identifier.citationGe L, Wang L, Xiao M, Wen W, Chan CT, et al. (2015) Topological edge modes in multilayer graphene systems. Optics Express 23: 21585. Available: http://dx.doi.org/10.1364/OE.23.021585.en
dc.identifier.issn1094-4087en
dc.identifier.pmid26368137en
dc.identifier.doi10.1364/OE.23.021585en
dc.identifier.urihttp://hdl.handle.net/10754/621510-
dc.description.abstractPlasmons can be supported on graphene sheets as the Dirac electrons oscillate collectively. A tight-binding model for graphene plasmons is a good description as the field confinement in the normal direction is strong. With this model, the topological properties of plasmonic bands in multilayer graphene systems are investigated. The Zak phases of periodic graphene sheet arrays are obtained for different configurations. Analogous to Su-Schrieffer-Heeger (SSH) model in electronic systems, topological edge plasmon modes emerge when two periodic graphene sheet arrays with different Zak phases are connected. Interestingly, the dispersion of these topological edge modes is the same as that in the monolayer graphene and is invariant as the geometric parameters of the structure such as the separation and period change. These plasmonic edge states in multilayer graphene systems can be further tuned by electrical gating or chemical doping. © 2015 Optical Society of America.en
dc.description.sponsorshipThis work is supported the National Natural Science Foundation of China (Grant No. 11304038) and the Fundamental Research Funds for the Central Universities (Grant No. CQDXWL-2014-Z005). Work in Hong Kong is supported by Hong Kong Research Grant Council AOE/P-02/12.en
dc.publisherThe Optical Societyen
dc.titleTopological edge modes in multilayer graphene systemsen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalOptics Expressen
dc.contributor.institutionDepartment of Applied Physics, Chongqing University, Chongqing, Chinaen
dc.contributor.institutionDepartment of Physics, Hong Kong University of Science and Technology, Hong Kong, Hong Kongen
dc.contributor.institutionInstitute for Advanced Study, Hong Kong University of Science and Technology, Hong Kong, Hong Kongen
kaust.authorGe, Lixinen

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