37 citations · 97 across the 8 of their papers we have counts for
8 papers
Mode transitions and spoke structures in ExB Penning discharge
M. Tyushev, M. Papahn Zadeh, N. S. Chopra +7
Two-dimensional particle-in-cell simulations in the (radial-azimuthal) plane perpendicular to the axial direction of a cylindrical ExB Penning discharge are presented. The low-pres…
Drift-kinetic PIC simulations of plasma flow and energy transport in the magnetic mirror configuration
M. Tyushev, A. Smolyakov, A. Sabo +3
Plasma flow and acceleration in a magnetic mirror configuration are studied using a drift-kinetic particles-in-cell model in the paraxial approximation, with an emphasis on finite…
Impact of Coulomb Scattering on Argon Plasma Based Thermionic Converter Performance
Roelof E. Groenewald
Particle-in-cell (PIC) simulations were performed to study the impact of Coulomb scattering on the performance of argon plasma based thermionic converters. Using a simplified model…
Simulations of Argon Plasma Decay in a Thermionic Converter
R. E. Groenewald, S. Clark, A. Kannan +1
The dynamics of an argon plasma in the gap of a thermionic diode is investigated using particle-in-cell (PIC) simulations. The time-averaged diode current, as a function of the rel…
Localized Plasmons in Topological Insulators
Zhihao Jiang, Malte Rösner, Roelof E. Groenewald +1
We investigate in a fully quantum-mechanical manner how the many-body excitation spectrum of topological insulators is affected by the presence of long-range Coulomb interactions.…
Plasmonic Superconductivity in Layered Materials
M. Rösner, R. E. Groenewald, G. Schönhoff +3
Plasmonic excitations behave fundamentally different in layered materials in comparison to bulk systems. They form gapless modes, which in turn couple at low energies to the electr…
Interplay of screening and superconductivity in low-dimensional materials
G. Schönhoff, M. Rösner, R. Groenewald +2
A quantitative description of Coulomb interactions is developed for two-dimensional superconducting materials, enabling us to compare intrinsic with external screening effects, suc…
Valley Plasmonics in the Dichalcogenides
R. E. Groenewald, M. Rösner, G. Schönhoff +2
The rich phenomenology of plasmonic excitations in the dichalcogenides is analyzed as a function of doping. The many-body polarization, the dielectric response function and electro…