scholarly journals Drift Modified Longitudinal Electrokinetic Mode in Colloids Laden Semiconductor Quantum Plasmas

2014 ◽  
Vol 2014 ◽  
pp. 1-5
Author(s):  
Sandhya Chaudhary ◽  
Nilesh Nimje ◽  
Nishchhal Yadav ◽  
S. Ghosh
Keyword(s):  
Quantum Effect ◽  
Wave Spectrum ◽  
Linear Dispersion ◽  
Semiconductor Plasma ◽  
Quantum Hydrodynamic Model ◽  
Bohm Potential ◽  
Dc Electric Field ◽  
Quantum Hydrodynamic ◽  
Quantum Semiconductor ◽  
Absorption Characteristics

Dispersion and absorption characteristics of electrokinetic wave in unmagnetised extrinsic semiconductor with streaming carriers are analytically investigated. By using quantum hydrodynamic model, a linear dispersion relation is derived for longitudinal electrokinetic wave in colloids laden semiconductor plasma under slow electrokinetic mode regime. Results indicate that quantum effect through Bohm potential significantly modifies the dispersion and absorption characteristics of electrokinetic wave spectrum. The outcome is hoped to add substantially to the present knowledge of wave spectrum of longitudinal electrokinetic wave in colloids laden quantum semiconductor plasma subjected to a dc electric field along the direction of wave propagation.

Impact of Relativistic Electron Beam on Hole Acoustic Instability in Quantum Semiconductor Plasmas

2018 ◽  
Vol 73 (2) ◽  
pp. 135-141 ◽  
Author(s):  
M. Siddique ◽  
M. Jamil ◽  
A. Rasheed ◽  
F. Areeb ◽  
Asif Javed ◽  
...  
Keyword(s):  
Electron Beam ◽  
Relativistic Electron ◽  
Relativistic Electron Beam ◽  
Semiconductor Plasma ◽  
Quantum Hydrodynamic Model ◽  
Bohm Potential ◽  
Plasma Species ◽  
Degeneracy Pressure ◽  
Quantum Semiconductor ◽  
Pressure Exchange

AbstractWe studied the influence of the classical relativistic beam of electrons on the hole acoustic wave (HAW) instability exciting in the semiconductor quantum plasmas. We conducted this study by using the quantum-hydrodynamic model of dense plasmas, incorporating the quantum effects of semiconductor plasma species which include degeneracy pressure, exchange-correlation potential and Bohm potential. Analysis of the quantum characteristics of semiconductor plasma species along with relativistic effect of beam electrons on the dispersion relation of the HAW is given in detail qualitatively and quantitatively by plotting them numerically. It is worth mentioning that the relativistic electron beam (REB) stabilises the HAWs exciting in semiconductor (GaAs) degenerate plasma.

scholarly journals Theory and Simulation of the Smooth Quantum Hydrodynamic Model

VLSI Design ◽  
1999 ◽  
Vol 9 (4) ◽  
pp. 351-355
Author(s):  
Carl L. Gardner
Keyword(s):  
Hydrodynamic Model ◽  
Differential Resistance ◽  
Classical Electron ◽  
Model Simulations ◽  
Quantum Hydrodynamic Model ◽  
Tunneling Diode ◽  
Qhd Model ◽  
Quantum Hydrodynamic ◽  
Quantum Semiconductor ◽  
Classical Hydrodynamic

The “smooth” quantum hydrodynamic (QHD) model is derived specifically to handle in a mathematically rigorous way the discontinuities in the classical potential energy which occur at heterojunction barriers in quantum semiconductor devices. Smooth QHD model simulations of the resonant tunneling diode are presented which exhibit enhanced negative differential resistance when compared with simulations using the original O(ħ2) QHD model. In addition, smooth QHD simulations of a classical electron shock wave are presented which agree with classical hydrodynamic model simulations and which do not exhibit the spurious dispersive oscillations of the O(ħ2) QHD model.

scholarly journals Conversion efficiency of even harmonics of whistler pulse in quantum magnetoplasma

2019 ◽  
Vol 37 (01) ◽  
pp. 5-11
Author(s):  
Punit Kumar ◽  
Shiv Singh ◽  
Nafees Ahmad
Keyword(s):  
Magnetic Field ◽  
Conversion Efficiency ◽  
Plasma Electron ◽  
Quantum Plasma ◽  
Fundamental Wave ◽  
Quantum Hydrodynamic Model ◽  
Bohm Potential ◽  
Classical Plasma ◽  
Quantum Hydrodynamic ◽  
Statistical Pressure

AbstractStudy of even harmonic generation resulting from propagation of whistler pulse in homogeneous high-density quantum plasma immersed in an externally applied magnetic field, using the recently developed quantum hydrodynamic model is presented. The effects of quantum Bohm potential, quantum statistical pressure, and electron spin have been taken into account. The field amplitude of even harmonic of the whistler with respect to fundamental wave and the conversion efficiency for phase-mismatch has been analyzed. The conversion efficiency of harmonic radiation depends on the plasma electron density, magnetic field strength as well as the intensity of whistler pulse. The efficiency increases significantly with an increase in plasma density, magnetic field and whistler wave intensity. Higher conversion efficiency is observed in degenerate plasma for lower values of the static magnetic field as compared with classical plasma.

scholarly journals The Chapman-Enskog Expansion and the Quantum Hydrodynamic Model for Semiconductor Devices

VLSI Design ◽  
2000 ◽  
Vol 10 (4) ◽  
pp. 415-435 ◽  
Author(s):  
Carl L. Gardner ◽  
Christian Ringhofer
Keyword(s):  
Heat Flux ◽  
Boltzmann Equation ◽  
Potential Energy ◽  
Hydrodynamic Model ◽  
Semiconductor Devices ◽  
Quantum Hydrodynamic Model ◽  
Qhd Model ◽  
Quantum Hydrodynamic ◽  
Classical Potential ◽  
Quantum Semiconductor

A “smooth” quantum hydrodynamic (QHD) model for semiconductor devices is derived by a Chapman-Enskog expansion of the Wigner-Boltzmann equation which can handle in a mathematically rigorous way the discontinuities in the classical potential energy which occur at heterojunction barriers in quantum semiconductor devices. A dispersive quantum contribution to the heat flux term in the QHD model is introduced.

Streaming effects on dust ion acoustic wave in dense quantized plasmas

2021 ◽  
Vol 35 (04) ◽  
pp. 2150049
Author(s):  
Zahid Mir ◽  
A. Rasheed ◽  
Arroj A. Khan ◽  
M. Asif ◽  
M. Jamil
Keyword(s):  
Dense Plasma ◽  
Dusty Plasmas ◽  
Linear Dispersion ◽  
Ion Acoustic Wave ◽  
Exchange Correlation ◽  
Quantum Hydrodynamic Model ◽  
Exchange Correlation Potential ◽  
Ion Acoustic ◽  
Correlation Potential ◽  
Quantum Hydrodynamic

The propagation of dust-ion acoustic (DIA) wave is studied with the streaming effects of ion particles in a quantum dusty plasmas. The quantum effects arising from Landau magnetization, Fermi degenerate pressure, tunneling potential and exchange-correlation potential are considered for the electrons. Linear dispersion relation is derived using Quantum Hydrodynamic Model and the results are graphically presented showing the propagation and growth rate of the electrostatic mode in the dense plasma environment.

Nonlinear structures: soliton, shocklike and explosive waves in quantum semiconductor plasma

2021 ◽  
Author(s):  
Haifa Al-Yousef
Keyword(s):  
Analytical Procedure ◽  
Integration Method ◽  
Fluid Model ◽  
Three Dimensional ◽  
Semiconductor Plasma ◽  
Direct Integration Method ◽  
Solution Methods ◽  
Gradient Forces ◽  
Quantum Semiconductor ◽  
Nonlinear Solutions

Abstract The properties and conditions for the appearance of some nonlinear waves in a three-dimensional semiconductor plasma are discussed, by studying the described plasma fluid system with quantum gradient forces and degraded pressures. Our analytical procedure is built on the reductive perturbation theory to obtain the Kadomtsev-Petvashvili equation for the fluid model and solving it using the direct integration method and the Bäcklund transform. Through different solution methods we got different nonlinear solutions describing different pulse profiles such as soliton, kink and explosive pulses. This model can be used to identify the potential disturbances in a semiconductor plasma.

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