Graphene surface plasmon polaritons with opposite in-plane electron oscillations along its two surfaces

Journal Article · Mon Aug 31 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4929886· OSTI ID:22489193

Liang, Huawei; Ruan, Shuangchen; Zhang, Min; Su, Hong; Li, Irene Ling ^[1]

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1. Shenzhen Key Laboratory of Laser Engineering, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060 (China)

We predict the existence of a surface plasmon polariton (SPP) mode that can be guided by a graphene monolayer, regardless of the sign of the imaginary part of its conductivity. In this mode, in-plane electron oscillations along two surfaces of graphene are of opposite directions, which is very different from conventional SPPs on graphene. Significantly, coating graphene with dielectric films yields a way to guide the SPPs with both sub-wavelength mode widths and ultra-long propagation distances. In particular, the mode characteristics are very sensitive to the chemical potential of graphene, so the graphene-based waveguide can find applications in many optoelectronic devices.

• OSTI ID: 22489193
• Journal Information: Applied Physics Letters, Vol. 107, Issue 9; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DIELECTRIC MATERIALS
DISTANCE
FILMS
GRAPHENE
OPTOELECTRONIC DEVICES
OSCILLATIONS
POLARONS
POTENTIALS
SURFACES
WAVELENGTHS