Open AccessГидродинамические терагерцовые плазмоны и электронный звук в графене с пространственной дисперсией
Author(s) -
Д.В. Фатеев,
В.В. Попов
Publication year - 2020
Publication title -
fizika i tehnika poluprovodnikov
Language(s) - English
Resource type - Journals
eISSN - 1726-7315
pISSN - 0015-3222
DOI - 10.21883/ftp.2020.08.49626.02
Subject(s) - electron , dispersion (optics) , condensed matter physics , physics , diffusion , dispersion relation , plasmon , graphene , terahertz radiation , transverse plane , range (aeronautics) , magnetic field , materials science , optics , quantum mechanics , structural engineering , engineering , composite material
Transverse-magnetic eigenmodes in graphene with spatial dispersion are theoretically investigated in the hydrodynamic regime in terahertz frequency range. It is shown that the spatial dispersion emerges by the diffusion mechanism of the electron transport as a result of the spreading the electron density gradients under the action of the pressure in electron fluid. Screened and unscreened plasmons as well as electron sound are considered.