16 citations · 69 across the 12 of their papers we have counts for
12 papers
Shear Bernstein modes in a two-dimensional electron liquid
A. N. Afanasiev, P. S. Alekseev, A. A. Greshnov +1
Bernstein modes are formed as a result of non-local coupling of collective excitations and cyclotron harmonics in magnetized plasma. In degenerate solid state plasma they are typic…
On the Role of Interplanetary Shocks in Accelerating MeV Electrons
N. Talebpour Sheshvan, N. Dresing, R. Vainio +2
One of the sources of solar energetic particle (SEP) events is shocks that are driven by fast coronal mass ejections (CMEs). They can accelerate SEPs up to relativistic energies an…
Hall effect in Poiseuille flow of two-dimensional electron fluid
A. N. Afanasiev, P. S. Alekseev, A. A. Danilenko +3
The hydrodynamic regime of charge transport has been recently realized in high-quality conductors. In the hydrodynamic as well as in the Ohmic regimes the main part of the Hall res…
Rotational viscosity in spin resonance of hydrodynamic electrons
A. N. Afanasiev, P. S. Alekseev, A. A. Danilenko +2
In novel ultra-pure materials electrons can form a viscous fluid, which is fundamentally different by its dynamics from the electron gas in ordinary conductors with significant den…
Competition between isotropic and strongly anisotropic terms in the impact ionization rate of narrow- and middle-gap cubic semiconductors
A. N. Afanasiev, A. A. Greshnov, G. G. Zegrya
We report on the strong anisotropy of the inter-band process of impact ionization in direct-gap cubic semiconductors with either weak or strong spin-orbit coupling at low effective…
Ballistic flow of two-dimensional electrons in a magnetic field
A. N. Afanasiev, P. S. Alekseev, A. A. Greshnov +1
In conductors with a very small density of defects, electrons at low temperatures collide predominantly with the edges of a sample. Therefore, the ballistic regime of charge and he…
Acoustic plasmons and isotropic short-range interaction in two-component electron liquids
A. N. Afanasiev
Dispersion of acoustic plasmons and isotropic Landau parameters are calculated in three- and two-dimensional two-component electron-electron and electron-hole liquids at various co…
Acoustic plasmons in type-I Weyl semimetals
A. N. Afanasiev, A. A. Greshnov, D. Svintsov
Massless chiral fermions emergent in inversion symmetry-breaking Weyl semimetals (WSMs) reside in the vicinity of multiple low symmetry nodes and thus acquire strongly anisotropic…
On the origin of hard X-ray emissions from the behind-the-limb flare on 2014 September 1
Yihong Wu, Alexis P. Rouillard, Athanasios Kouloumvakos +6
The origin of hard X-rays and gamma-rays emitted from the solar atmosphere during occulted solar flares is still debated. The hard X-ray emissions could come from flaring loop tops…
Ballistic-hydrodynamic phase transition in flow of two-dimensional electrons
A. N. Afanasiev, P. S. Alekseev, A. A. Greshnov +1
Phase transitions are characterized by a sharp change in the type of dynamics of microparticles, and their description usually requires quantum mechanics. Recently, a peculiar type…
Relativistic suppression of Auger recombination in Weyl semimetals
A. N. Afanasiev, A. A. Greshnov, D. Svintsov
Auger recombination (AR) being electron-hole annihilation with energy-momentum transfer to another carrier is believed to speed up in materials with small band gap. We theoreticall…
On the impact ionization rate in direct gap semiconductors
A. N. Afanasiev, A. A. Greshnov, G . G. Zegrya
We present quantum-mechanical theory of impact ionization in semiconductors with the direct band gap in $Γ$-point. It is shown that energy dependence of the impact ionization rat…