Orientation dependence of the optical spectra in graphene at high frequencies
arXiv:0709.3700 · doi:10.1103/PhysRevB.77.241402
Abstract
On the basis of the Kubo formula we evaluated the optical conductivity of a graphene sheet. The full behavior of frequency as well as temperature dependence of the optical conductivity is presented. We show that the anisotropy of conductivity can be significantly enhanced at high frequencies. The photon absorption depends on the field polarization direction. At the frequency comparable to the maximum separation of upper and lower bands the photon-induced conduction of electrons is strongly suppressed if the polarization of field is along the zigzag direction. The corresponding optical conductivity is several orders of magnitude weaker than that when the light is polarizing along the armchair direction. We propose that the property of orientation selection of absorption in the graphene can be used as a basis for a high-frequency partial polarizer.
5 pages, 5 figures
References in corpus (22)
- Electric Field Effect in Atomically Thin Carbon Films
- Two Dimensional Atomic Crystals
- Universal Dynamic Conductivity and Quantized Visible Opacity of Suspended Graphene
- Half-Metallic Graphene Nanoribbons
- Unconventional quantum Hall effect and Berry's phase of 2pi in bilayer graphene
- Making graphene visible
- Dielectric function, screening, and plasmons in 2D graphene
- Magnetism in Graphene Induced by Single-Atom Defects
- Carrier transport in 2D graphene layers
- Universal dynamical conductance in graphite
- Weak localisation magnetoresistance and valley symmetry in graphene
- Strong suppression of weak (anti)localization in graphene
- Quantum transport of massless Dirac fermions in graphene
- Unusual Microwave Response of Dirac Quasiparticles in Graphene
- Electron transport in disordered graphene
- Effect of Disorder on Transport in Graphene
- Visibility of graphene flakes on a dielectric substrate
- Robust Transport Properties in Graphene
- Low energy theory of disordered graphene
- On electron (anti)localization in graphene
- Transport equations for a two-dimensional electron gas with spin-orbit interaction
- Notes on the minimal longitudinal dc conductivity of perfect bilayer graphene
Cited by in corpus (4)
- Excitonic Effects on the Optical Response of Graphene and Bilayer Graphene
- Relation between Zitterbewegung and the charge conductivity, Berry curvature and the Chern number of multi band systems
- First-principles calculations of electrical conductivities of edge-modified graphene nanoribbons: strain effect
- Anomalous Valley Magnetic Moment of Graphene