Exchange interaction effects on low frequency surface waves in a quantum plasma slab

2017 ◽  
Vol 24 (5) ◽  
pp. 054505 ◽  
Author(s):  
M. Shahmansouri ◽  
B. Farokhi ◽  
R. Aboltaman
Keyword(s):  
Surface Waves ◽  
Exchange Interaction ◽  
Low Frequency ◽  
Interaction Effects ◽  
Quantum Plasma ◽  
Plasma Slab

Dust acoustic surface waves on a dusty plasma slab

2000 ◽  
Vol 7 (6) ◽  
pp. 2731-2732 ◽  
Author(s):  
L. Stenflo ◽  
P. K. Shukla ◽  
M. Y. Yu
Keyword(s):  
Surface Waves ◽  
Dusty Plasma ◽  
Dust Acoustic ◽  
Plasma Slab ◽  
Acoustic Surface Waves

scholarly journals Dispersion properties of electrostatic oscillations in quantum plasmas

2009 ◽  
Vol 76 (1) ◽  
pp. 7-17 ◽  
Author(s):  
BENGT ELIASSON ◽  
PADMA KANT SHUKLA
Keyword(s):  
Low Frequency ◽  
Electron Plasma ◽  
Quantum Plasma ◽  
Plasma Oscillations ◽  
Heisenberg Uncertainty Principle ◽  
Electrostatic Wave ◽  
Dense Plasmas ◽  
Astrophysical Objects ◽  
Heisenberg Uncertainty ◽  
Semiconductor Plasmas

AbstractWe present a derivation of the dispersion relation for electrostatic oscillations in a zero-temperature quantum plasma, in which degenerate electrons are governed by the Wigner equation, while non-degenerate ions follow the classical fluid equations. The Poisson equation determines the electrostatic wave potential. We consider parameters ranging from semiconductor plasmas to metallic plasmas and electron densities of compressed matter such as in laser compression schemes and dense astrophysical objects. Owing to the wave diffraction caused by overlapping electron wave function because of the Heisenberg uncertainty principle in dense plasmas, we have the possibility of Landau damping of the high-frequency electron plasma oscillations at large enough wavenumbers. The exact dispersion relations for the electron plasma oscillations are solved numerically and compared with the ones obtained by using approximate formulas for the electron susceptibility in the high- and low-frequency cases.

Fundamental properties of surface waves in lossless stratified structures

2010 ◽  
Vol 466 (2120) ◽  
pp. 2447-2469 ◽  
Author(s):  
Guido Valerio ◽  
David R. Jackson ◽  
Alessandro Galli
Keyword(s):  
Surface Waves ◽  
Dispersion Equation ◽  
High Frequency ◽  
Low Frequency ◽  
Layered Structures ◽  
Graphical Solution ◽  
Fundamental Properties ◽  
The Past ◽  
Permittivity And Permeability ◽  
Constitutive Parameters

This paper is focused on dispersive properties of lossless planar layered structures with media having positive constitutive parameters (permittivity and permeability), possibly uniaxially anisotropic. Some of these properties have been derived in the past with reference to specific simple layered structures, and are here established with more general proofs, valid for arbitrary layered structures with positive parameters. As a first step, a simple application of the Smith chart to the relevant dispersion equation is used to prove that evanescent (or plasmonic-type) waves cannot be supported by layers with positive parameters. The main part of the paper is then focused on a generalization of a common graphical solution of the dispersion equation, in order to derive some general properties about the behaviour of the wavenumbers of surface waves as a function of frequency. The wavenumbers normalized with respect to frequency are shown to be always increasing with frequency, and at high frequency they tend to the highest refractive index in the layers. Moreover, two surface waves with the same polarization cannot have the same wavenumber at a given frequency. The low-frequency behaviours are also briefly addressed. The results are derived by means of a suitable application of Foster’s theorem.

Dipole-dipole and exchange interaction effects on the magnetization relaxation of two macrospins: Compared

2020 ◽  
Vol 507 ◽  
pp. 166814 ◽  
Author(s):  
Yuri P. Kalmykov ◽  
Serguey V. Titov ◽  
Declan J. Byrne ◽  
William T. Coffey ◽  
Marios Zarifakis ◽  
...  
Keyword(s):  
Exchange Interaction ◽  
Interaction Effects ◽  
Magnetization Relaxation
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