Nonlinear properties of gated graphene in a strong electromagnetic field
- Authors: Avetisyan A.A.1, Djotyan A.P.1, Moulopoulos K.1
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Affiliations:
- Department of Physics
- Issue: Vol 80, No 2 (2017)
- Pages: 307-314
- Section: Elementary Particles and Fields
- URL: https://journals.rcsi.science/1063-7788/article/view/191595
- DOI: https://doi.org/10.1134/S1063778817020041
- ID: 191595
Cite item
Abstract
We develop a microscopic theory of a strong electromagnetic field interaction with gated bilayer graphene. Quantum kinetic equations for density matrix are obtained using a tight binding approach within second quantized Hamiltonian in an intense laser field. We show that adiabatically changing the gate potentials with time may produce (at resonant photon energy) a full inversion of the electron population with high density between valence and conduction bands. In the linear regime, excitonic absorption of an electromagnetic radiation in a graphene monolayer with opened energy gap is also studied.
About the authors
A. A. Avetisyan
Department of Physics
Author for correspondence.
Email: artakav@ysu.am
Armenia, 1 A. Manoogian, Yerevan, 0025
A. P. Djotyan
Department of Physics
Email: artakav@ysu.am
Armenia, 1 A. Manoogian, Yerevan, 0025
K. Moulopoulos
Department of Physics
Email: artakav@ysu.am
Cyprus, Nicosia, 1678
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