Plasmonics of coupled graphene micro-structures
arXiv:1205.6841 · doi:10.1088/1367-2630/14/12/125001
Abstract
The optical response of graphene micro-structures, such as micro-ribbons and disks, is dominated by the localized plasmon resonance in the far infrared (IR) spectral range. An ensemble of such structures is usually involved and the effect of the coupling between the individual structures is expected to play an important role. In this paper, the plasmonic coupling of graphene microstructures in different configurations is investigated. While a relatively weak coupling between graphene disks on the same plane is observed, the coupling between vertically stacked graphene disks is strong and a drastic increase of the resonance frequency is demonstrated. The plasmons in a more complex structure can be treated as the hybridization of plasmons from more elementary structures. As an example, the plasmon resonances of graphene micro-rings are presented, in conjunction with their response in a magnetic field. Finally, the coupling of the plasmon and the surface polar phonons of SiO2 substrate is demonstrated by the observation of a new hybrid resonance peak around 500cm-1.
Submitted to New Journal of Physics, special issue for graphene optics
References in corpus (22)
- Two-Dimensional Gas of Massless Dirac Fermions in Graphene
- Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils
- Universal Dynamic Conductivity and Quantized Visible Opacity of Suspended Graphene
- Graphene Photonics and Optoelectronics
- Ultrafast graphene photodetector
- Graphene plasmonics: A platform for strong light-matter interaction
- Plasmonics in graphene at infra-red frequencies
- Measurement of the Optical Conductivity of Graphene
- Dielectric function, screening, and plasmons in 2D graphene
- Manipulating infrared photons using plasmons in transparent graphene superlattices
- Colloquium: Light scattering by particle and hole arrays
- Giant Faraday rotation in single- and multilayer graphene
- Infrared nanoscopy of Dirac plasmons at the graphene-SiO2 interface
- Drude Conductivity of Dirac Fermions in Graphene
- Utilization of a Buffered Dielectric to Achieve High Field-Effect Carrier Mobility in Graphene Transistors
- Inelastic Scattering and Current Saturation in Graphene
- Magnetic field tuning of terahertz Dirac plasmons in graphene
- Intrinsic Terahertz Plasmons and Magnetoplasmons in Large Scale Monolayer Graphene
- Exotic plasmon modes of double layer graphene
- Collective modes of the massless Dirac plasma
- Drude weight, plasmon dispersion, and a.c. conductivity in doped graphene sheets
- Quasi-classical cyclotron resonance of Dirac fermions in highly doped graphene
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- Quantum Effects in the Nonlinear Response of Graphene Plasmons
- Strong coupling in the far-infrared between graphene plasmons and the surface optical phonons of silicon dioxide
- Room Temperature Amplification of Terahertz Radiation by Grating-Gate Graphene Structures
- Optically and Electrically Tunable Dirac Points and Zitterbewegung in Graphene-Based Photonic Superlattices
- Hybridized Plasmons in 2D Nanoslits: From Graphene to Anisotropic 2D Materials
- Graphene Plasmons in Triangular Wedges and Grooves
- Modeling the Excitation of Graphene Plasmons in Periodic Grids of Graphene Ribbons: An Analytical Approach
- Universal description of channel plasmons in two-dimensional materials
- Plasmon coupling in extended structures: Graphene superlattice nanoribbon arrays
- Photon Emission Rate Engineering using Graphene Nanodisc Cavities
- Tunable THz Surface Plasmon Polariton based on Topological Insulator-Layered Superconductor Hybrid Structure
- Effects of Mid-infrared Graphene Plasmons on Photothermal Heating
- In-Plane Plasmon Coupling in Topological Insulator BiSe Thin Films