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The low-frequency instability of a cylindrical poorly magnetized plasma with an inward-directed radial electric field is studied changing the gas pressure and the ion cyclotron frequency. The unstable frequency always decreases when the gas…

等离子体物理 · 物理学 2016-05-25 Thiery Pierre

A comprehensive study of drain current dispersion effects in $\beta$-Ga$_2$O$_3$ FETs has been done using DC, pulsed and RF measurements. Both virtual gate effect in the gate-drain access region and interface traps under the gate are most…

材料科学 · 物理学 2021-08-11 Abhishek Vaidya , Uttam Singisetti

The motion of electrons under homogeneously applied electric fields in low-dimensional systems with non-zero off-diagonal effective mass (ODEM) is studied. The equation describing the time evolution of a probability coefficient of finding…

应用物理 · 物理学 2025-06-26 Nobuya Mori , Hajime Tanaka , Jo Okada

A graphene sheet biased with a drift electric current offers a tantalizing opportunity to attain unidirectional, backscattering-immune, and subwavelength light propagation, as proposed in [T. A. Morgado, M. G. Silveirinha, ACS Photonics…

介观与纳米尺度物理 · 物理学 2020-08-12 Tiago A. Morgado , Mário G. Silveirinha

Modelling of adiabatic gravity wave propagation in the solar atmosphere showed that mode conversion to field guided acoustic waves or Alfv\'en waves was possible in the presence of highly inclined magnetic fields. This work aims to extend…

太阳与恒星天体物理 · 物理学 2015-05-28 Marie E. Newington , Paul S. Cally

Bias plays an important role in the enhancement of diffusion in periodic potentials. Using the continuous-time random walk in the presence of a bias, we provide a novel mechanism for the enhancement of diffusion in a random energy…

统计力学 · 物理学 2018-08-15 Takuma Akimoto , Andrey G. Cherstvy , Ralf Metzler

The systematic analysis of non-adiabatic effect on convective mode has been conducted using wave energy relation. In the adiabatic analysis, the "propagation diagram" for convective mode is proposed as a useful tool to see its behavior. In…

太阳与恒星天体物理 · 物理学 2026-03-12 Hiroyasu Ando

We investigate the charge transport properties of a relativistic drifting plasma using the kinetic theory within the relaxation time approximation. The collective drift induced by electromagnetic fields is described in terms of a suitably…

高能物理 - 唯象学 · 物理学 2026-05-01 Ashes Modak , Anowar Shaikh , Manu Kurian , Binata Panda , Sadhana Dash

The conventional ion temperature gradient or \eta_i mode is known to propagate in the ion diamagnetic direction. Investigation of a generic drift fluid model with warm ions and adiabatic electrons, reveals that as \eta_i decreases, the…

等离子体物理 · 物理学 2022-03-17 Z. Y. Liu , Y. Z. Zhang , S. M. Mahajan , T. Xie

We investigate the collective electron dynamics in a recently proposed graphene-based terahertz emitter under the influence of the radiative damping effect, which is included self-consistently in a molecular dynamics approach. We show that…

介观与纳米尺度物理 · 物理学 2017-02-15 A. S. Moskalenko , S. A. Mikhailov

Turbulence in the ionic migration and in the microfluidic electro-hydrodynamic convection (mixing) under constant and low-frequency external electric field has been studied using distributed chaos approach and notion of effective…

流体动力学 · 物理学 2019-05-01 A. Bershadskii

The acoustoelectric effect $AE$ in Graphene with degenerate energy dispersion is theoretically studied for hypersound in the regime $ql >> 1$. At low temperatures ($k_{\beta}T <<1$), the non-linear dependence of Acoustoelectric current…

介观与纳米尺度物理 · 物理学 2015-05-22 K. A. Dompreh , N. G. Mensah , S. Y. Mensah

To study the relativistic thermodynamic properties of a Fermi gas in a strong magnetic field, we construct the relativistic thermodynamic potential by the relativistic Fermi distribution function taking into account that the motion of…

等离子体物理 · 物理学 2012-12-14 Nodar L. Tsintsadze , Levan N. Tsintsadze

New results for attenuation and damping of electromagnetic fields in rigid conducting media are derived under the conjugate influence of inertia due to charge carriers and displacement current. Inertial effects are described by a relaxation…

经典物理 · 物理学 2009-03-03 F. E. M. Silveira , J. A. S. Lima

We consider pseudogap effects for electrons interacting with gapless modes. We study both generic 1D semiconductors with acoustic phonons and incommensurate charge density waves. We calculate the subgap absorption as it can be observed by…

强关联电子 · 物理学 2007-05-23 S. Brazovskii , S. I. Matveenko

A system of degenerate drift-diffusion equations for the electron, hole, and oxygen vacancy densities, coupled to the Poisson equation for the electric potential, is analyzed in a three-dimensional bounded domain with mixed…

偏微分方程分析 · 数学 2023-11-29 Ansgar Jüngel , Martin Vetter

We regard drift-diffusion equations for semiconductor devices in Lebesgue spaces. To that end we reformulate the (generalized) van Roosbroeck system as an evolution equation for the potentials to the driving forces of the currents of…

偏微分方程分析 · 数学 2007-05-23 Hans-Christoph Kaiser , Hagen Neidhardt , Joachim Rehberg

We propose and study the properties of a non-linear electrodynamics that emerges inspired on the physics of Dirac materials. This new electrodynamic model is an extension of the one-loop corrected non-linear effective Lagrangian computed in…

材料科学 · 物理学 2023-09-29 M. J. Neves , Patricio Gaete , L. P. R. Ospedal , J. A. Helayël-Neto

Problem of sound propagation in the ocean is considered. A novel approach of K. Hegewisch and S. Tomsovic for statistical modelling of acoustic wavefields in the random ocean is examined. The approach is based on construction of a wavefield…

大气与海洋物理 · 物理学 2018-01-25 Denis Makarov

In recent papers it has been demonstrated that sampling a Gibbs distribution from an appropriate time-irreversible Langevin process is, from several points of view, advantageous when compared to sampling from a time-reversible one. Adding…

概率论 · 数学 2015-02-20 Luc Rey-Bellet , Konstantinos Spiliopoulos
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