Nonlinear beat excitation of low frequency wave in degenerate plasmas

Mir, Zahid; Shahid, Muhammad; Jamil, Muhammad; Rasheed, A.; Shahbaz, Atif

doi:10.1063/1.5022369

Cited by 7 publications

(4 citation statements)

References 34 publications

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“…Exchange-correlation potential is an important quantum effect term. Mir et al considered the exchange-correlation potential when studying degenerate plasmas [40]. Haas derived a quantum fluid equation containing exchange correlation, which is described by an effective potential [47].…”

Section: Exchange-correlation Potentialmentioning

confidence: 99%

“…where a B � εZ 2 /m e e 2 is effective Bohr atomic radius, in which ε � 1 is the relative dielectric constant and m e is the electron mass [40]. We adapt the dimension of the three-dimensional electron exchange-correlation potential to the dimension of the two-dimensional electron exchange-correlation potential based on [40].…”

Section: Exchange-correlation Potentialmentioning

confidence: 99%

“…and the two-dimensional electron exchange-correlation potential of high density is expressed as follows [40]:…”

Section: Exchange-correlation Potentialmentioning

confidence: 99%

“…However, the vector potential expression of the electromagnetic wave A cannot be written for the interaction of 2DQEG and laser. Another feasible method to implement electromagnetic waves is to ignore the effect of the magnetic field and write down the expression for the electric field term of electromagnetic waves [40]. e 2DPIC method cannot be used either to study the interaction between charged particles and 2DQEG.…”

Section: Introductionmentioning

confidence: 99%

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Stopping Power Modulation by Pump Waves of Charged Particles Moving above Two-Dimensional Electron Gases

Yang

Zhang

et al. 2021

Laser Part. Beams

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The perturbation electron density and stopping power caused by the movement of charged particles above two-dimensional quantum electron gases (2DQEG) have been studied in numerous works using the quantum hydrodynamic (QHD) theory. In this paper, the QHD is modified by introducing the two-dimensional electron exchange-correlation potential at high density V x c 2 DH and the pump wave modulations. Based on the modified QHD, the perturbation electron density and stopping power are calculated for pump waves with various parameters. The results show that the stopping power values are more accurate after considering V x c 2 DH . Under the modulation of pump waves with the wavelength from 0.1 nm to 0.1 cm , the perturbation electron density of 2DQEG and the stopping power of charged particles show periodic changes. Under the modulation of pump waves with λ = 1.76 × 10 − 4 cm and Φ 0 = 2 × 10 10 e / λ f , the average stopping power with respect to the time phase θ becomes negative, which means that the charged particles will gain energy and can be accelerated. This is a new phenomenon in the fields of 2DQEG and of great significance in surface physics and surface modification in nanoelectronic devices with beam matter interactions.

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Section: Exchange-correlation Potentialmentioning

confidence: 99%

Section: Exchange-correlation Potentialmentioning

confidence: 99%

“…and the two-dimensional electron exchange-correlation potential of high density is expressed as follows [40]:…”

Section: Exchange-correlation Potentialmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Stopping Power Modulation by Pump Waves of Charged Particles Moving above Two-Dimensional Electron Gases

Yang

Zhang

et al. 2021

Laser Part. Beams

View full text Add to dashboard Cite

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Karpman-Washimi magnetization in relativistic quantum plasmas

et al. 2019

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An interesting phenomenon of ponderomotive Karpman-Washimi magnetization is investigated in ultrarelativistic degenerate plasmas. The quantum characteristics of plasma electrons are considered on incorporating the Fermi pressure and exchange-correlation potential terms into the fluid model of plasmas. The ion fluid is referred to as classically warm. The Karpman-Washimi ponderomotive magnetization MK−WStr and radiation power P¯K−WStr are derived as functions of scaled wave number k¯, scaled effective frequency ω¯∗, ratio of thermal temperature of ions to the Fermi temperature of electrons E¯i′, and fine structure constant α for two cases of streaming and nonstreaming quantum plasmas. It has been observed that the Karpman-Washimi ponderomotive magnetization MK−WStr and the Karpman-Washimi radiation power P¯K−WStr are significantly affected by the scaled streaming velocity v¯0.

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Nonlinear frequency shift of acoustic waves in semiconductor plasmas

et al. 2019

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The evolution of nonlinear instability of an electron acoustic wave from the coupling of pair modes of slightly different frequencies in semiconductor plasmas is studied. The linear dispersive properties of pair modes, viz., pump wave and sideband wave, are analyzed on employing the quantum hydrodynamic model. The linear fields of pair modes couple through a second order convective term to unfold the nonlinear beat frequency of the electron acoustic mode. The nonlinear dispersion relation leads to the derivation of the growth rate of three-wave parametric instability. The quantum effects of semiconductor electrons are taken through the exchange-correlation potential, the Bohm potential, and statistical Fermi pressure. The growth rate is also analyzed graphically. This study seeks its applications in semiconductor devices.

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Nonlinear beat excitation of low frequency wave in degenerate plasmas

Cited by 7 publications

References 34 publications

Stopping Power Modulation by Pump Waves of Charged Particles Moving above Two-Dimensional Electron Gases

Stopping Power Modulation by Pump Waves of Charged Particles Moving above Two-Dimensional Electron Gases

Karpman-Washimi magnetization in relativistic quantum plasmas

Nonlinear frequency shift of acoustic waves in semiconductor plasmas

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