Open AccessSolitary waves in a two-dimensional graphene-based superlattice
Author(s) -
S. Yu. Glazov,
G. A. Syrodoev
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1740/1/012062
Subject(s) - physics , superlattice , graphene , electric field , electromagnetic radiation , pulse (music) , electromagnetic field , electron , dispersion (optics) , relaxation (psychology) , quantum electrodynamics , computational physics , wave propagation , collision , boltzmann equation , dispersion relation , quantum mechanics , condensed matter physics , voltage , computer security , computer science , psychology , social psychology
The article is about the features of the propagation of solitary electromagnetic waves in the two-dimensional graphene superlattice both in the collisionless mode and in the collision mode. The quasiclassical approach has been used, in which the law of the dispersion of charge carriers is determined by the approximation of the quantum mechanical calculations. The magnitude of the electric current has been calculated by using the classic kinetic Boltzman equation with the model collision integral in the constant relaxation frequency approximation. The effect of the high-frequency electric field and the nonadditivity of the energy spectrum on the propagation of a solitary electromagnetic pulse in the arbitrary directions inside a sample has been determined. The numerical simulation of the evolution of solitary electromagnetic pulses is performed by using the method of difference schemes.