Open AccessОсобенности затухания и усиления терагерцовых плазмонных мод в графене с учетом пространственной дисперсии
Author(s) -
Олена Поліщук,
Д.В. Фатеев,
В.В. Попов
Publication year - 2021
Publication title -
fizika i tehnika poluprovodnikov
Language(s) - English
Resource type - Journals
eISSN - 1726-7315
pISSN - 0015-3222
DOI - 10.21883/ftp.2021.10.51432.29
Subject(s) - plasmon , physics , condensed matter physics , graphene , electron , dispersion relation , dispersion (optics) , phase (matter) , quantum mechanics
In this paper, we consider the effect of charge carrier drift on plasmon modes (plasmons) in electron Dirac liquid in graphene with a shifted Fermi level. Dispersion relations for plasmons were obtained using an electromagnetic approach and a hydrodynamic description of an electron liquid. Damped and amplified plasmon eigenmodes are studied numerically depending on the relationship of the magnitudes and directions of the direct electric current and the phase velocity of the plasmon.