Surface plasmons for doped graphene
arXiv:1502.00421 · doi:10.1103/PhysRevD.91.085038
Abstract
Within the Dirac model for the electronic excitations of graphene, we calculate the full polarization tensor with finite mass and chemical potential. It has, besides the (00)-component, a second form factor, which must be accounted for. We obtain explicit formulas for both form factors and for the reflection coefficients. Using these, we discuss the regions in the momentum-frequency plane where plasmons may exist and give numeric solutions for the plasmon dispersion relations. It turns out that plasmons exist for both, TE and TM polarizations over the whole range of the ratio of mass to chemical potential, except for zero chemical potential, where only a TE plasmon exists.
20 pages, 5 figures, some misprints corrected
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- Graphene through the looking glass of QFT
- Light-induced optomechanical forces in graphene waveguides
- Bulk contributions to the Casimir interaction of Dirac materials
- Surface plasmon on graphene at finite
- On the convergence of the polarization tensor in space-time of three dimensions
- TE resonances in graphene-dielectric structures
- Determining graphene's induced band gap with magnetic and electric emitters
- Polaritonic Contribution to the Casimir Energy between two Graphene Layers
- How modes shape Casimir Physics
- Temperature Dependence of the Response Functions of Graphene: Impact on Casimir and Casimi-Polder Forces in and out of Thermal Equilibrium