Terahertz Photoresponse Dependence On Magnetic And Electric Fields In Graphene-Based Devices

In this study, the influence of a magnetic field on Landau levels (LLs) in graphene-based devices is described via the magneto-optical response induced by terahertz (THz) radiation. For single-layer graphene, the resonance energies of the transitions between the LLs such as L-1, L-2 and L-3, fit quite well to the terahertz spectral range.The scattering rate of the spectral lines of LLs is taken into account. Based on a theoretical analysis we argue that the fingerprints of the THz radiation in single-layer graphene can be improved to be observed at low magnetic fields. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim