Electrical tuning of terahertz plasmonic crystal phases

P Sai, VV Korotyeyev, M Dub, M Słowikowski… - Physical Review X, 2023 - APS
We present an extensive study of resonant two-dimensional (2D) plasmon excitations in
grating-gated quantum well heterostructures, which enable an electrical control of periodic …

TETHYS: A simulation tool for graphene hydrodynamic models

P Cosme, JS Santos, JPS Bizarro… - Computer Physics …, 2023 - Elsevier
We present a simulation tool, TETHYS (ie, Two-dimensional Emitter of THz, Hydrodynamic
Simulation), developed with the aim of studying hydrodynamic models for electronic …

Plasmonic quantum nonlinear Hall effect in noncentrosymmetric two-dimensional materials

R Toshio, N Kawakami - Physical Review B, 2022 - APS
We investigate an interplay between quantum geometrical effects and surface plasmons
through surface plasmonic structures, based on an electron hydrodynamic theory. First we …

Plasmon dispersion and Landau damping in the nonlinear quantum regime

F Haas, JT Mendonça, H Terças - Physical Review E, 2023 - APS
We study the dispersion properties of electron plasma waves, or plasmons, which can be
excited in quantum plasmas in the nonlinear regime. In order to describe nonlinear electron …

Polarization and frequency-controlled amplification in a nonequilibrium plasma in the presence of an external magnetic field

AV Bogatskaya, EA Volkova… - Plasma Sources Science …, 2022 - iopscience.iop.org
The method of controlling the spectral and polarization characteristics of a terahertz (THz)
pulse during its amplification in nonequilibrium magnetized plasma is investigated. The …

Modified dispersion for graphene plasmon polariton in hydrodynamic model without potential notation

X Hua, D Sun, X Zhang, L Wang, D Liu, N Ma - Solid State Communications, 2023 - Elsevier
A hydrodynamic model, which discards potential notation but couples with the full Maxwell's
equations and boundary conditions, was proposed. The method took into account magnetic …

[HTML][HTML] TeraFET terahertz detectors with spatially non-uniform gate capacitances

Y Zhang, MS Shur - Applied Physics Letters, 2021 - pubs.aip.org
A non-uniform capacitance profile in the channel of a terahertz (THz) field-effect transistor
(TeraFET) could improve the THz detection performance. The analytical solutions and …

Nonlinear density waves on graphene electron fluids

P Cosme, H Terças - Physical Review B, 2023 - APS
The hydrodynamic behavior of charged carriers leads to nonlinear phenomena such as
solitary waves and shocks, among others. As an application, such waves might be exploited …

Anomalous conductivity due to two-stream instability in bilayer graphene

V Pinhão, P Cosme, H Terças - Physical Review B, 2023 - APS
We investigate the electron-hole two-stream instability (or Coulomb drag) in bilayer
graphene in the hydrodynamic regime, accounting for the effects of temperature, initial drift …

Topological waves in the continuum in magnetized graphene devices

A Ciobanu, P Cosme, H Terças - arXiv preprint arXiv:2212.01489, 2022 - arxiv.org
We show that topological waves at the interface between two magnetic domains in a
graphene device are possible. First, we consider the case of a linear relation between the …