Nonperturbative quasiclassical theory of graphene photoconductivity
arXiv:2104.00076 · doi:10.1103/PhysRevB.103.245406
Abstract
We present a nonperturbative quasi-classical theory of graphene photoconductivity. We consider the influence of low-frequency (microwave, terahertz, mid-infrared) radiation on the static conductivity of a uniform graphene layer and calculate its photoconductivity as a function of frequency, polarization and strength of the external ac electric field, as well as on the material properties (electron density, scattering time) and temperature. The theory is valid at frequencies and at arbitrarily strong ac electric fields. We compare our results with those of the third-order perturbation theory and determine the applicability range of the perturbative solutions.
arXiv comment14 pages, 10 figures; slightly modified and extended version
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