Magneto-tunable terahertz absorption in single-layer graphene: A general approach
arXiv:2206.09776 · doi:10.1016/j.physe.2023.115728
Abstract
Terahertz (THz) anisotropic absorption in graphene could be significantly modified upon applying a static magnetic field on its ultra-fast 2D Dirac electrons. In general, by deriving the generalized Fresnel coefficients for monolayer graphene under applied magnetic field, relatively high anisotropic absorption for the incoming linearly polarized light with specific scattering angles could be achieved. We also prove that the light absorption of monolayer graphene corresponds well to its surface optical conductivity in the presence of a static magnetic field. Moreover, the temperature-dependent conductivity of graphene makes it possible to show that a step by step absorption feature would emerge at very low temperatures. We believe that these properties may be considered to be used in novel graphene-based THz application.
References in corpus (6)
- The electronic properties of graphene
- Universal Dynamic Conductivity and Quantized Visible Opacity of Suspended Graphene
- Measurement of the Optical Absorption Spectra of Epitaxial Graphene from Terahertz to Visible
- Graphene-based perfect optical absorbers harnessing guided mode resonances
- On the Optical Properties of Excitons in Buckled 2D Materials in an External Electric Field
- Optical Properties of Anisotropic Excitons in Phosphorene