Microscopic nonlinear quantum theory of absorption of coherent electromagnetic radiation in doped bilayer graphene
arXiv:1907.10673
Abstract
The microscopic quantum theory of nonlinear stimulated scattering of chiral particles in doped stacked bilayer graphene on Coulomb field of charged impurities in the presence of strong coherent electromagnetic radiation is presented. The Liouville-von Neumann equation for the density matrix is solved analytically. Here the interaction of electrons with the scattering potential is taken into account as a perturbation. The absorption rate of nonlinear inverse-bremsstrahlung for a grand canonical ensemble of fermionic chiral particles is calculated using the obtained solution. The analysis of the obtained rate shows that in the terahertz and near-infrared range of frequencies there is significant absorption of incident radiation via multiphoton stimulated bremsstrahlung mechanism.
arXiv comment13 pages, 6 figures. arXiv admin note: substantial text overlap with arXiv:1907.04692 and arXiv:1710.03682
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