2017/10/01 by A. K. Avetissian, A. G. Ghazaryan, Avetissian, A. K. +5 · 2 citations
Materials Science · Physics and Astronomy · #Crystallography and Radiation Phenomena #FOS: Physical sciences #Graphene research and applications #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Optics (physics.optics) #Topological Materials and Phenomena #cond-mat.mes-hall #physics.optics
paper · pdf · doi:10.48550/arxiv.1710.03682
11 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:1703.06854
openalex publication_date 2017/10/01 · arxiv created 2017/10/26 · arxiv updated 2017/10/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Microscopic quantum theory of nonlinear stimulated scattering of 2D Dirac particles in doped graphene on Coulomb field of impurity ions at the presence of an external strong coherent electromagnetic radiation is developed. We consider high Fermi energies and low frequencies (actually terahertz radiation) to exclude the valence electrons excitations. The Liouville-von Neumann equation for the density matrix is solved analytically, taking into account the interaction of electrons with the scattering potential in the Born approximation. With the help of this solution, the nonlinear inverse-bremsstrahlung absorption rate for a grand canonical ensemble of 2D Dirac fermions is calculated. It is shown that one can achieve the efficient absorption coefficient by this mechanism.