Propagation of surface waves on a semi-bounded quantum magnetized collisional plasma

Niknam, A. R.; Boroujeni, S. Taheri; Khorashadizadeh, S. M.

doi:10.1063/1.4843995

Cited by 24 publications

(12 citation statements)

References 28 publications

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“…[35] in a semi-bounded quantum plasma using the specular reflection method. Such QHD model has been known to be one of the powerful models for the investigation of wave dynamics in quantum plasmas [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52]. It has been shown that the propagation characteristics of surface waves can be modified by the effects of quantum tunneling [37][38][39][40][41][42][43][44][45][46][47][48][49][50], the external magnetic field [40,51,52], the particle-particle collisions [40], the relativistic factor [31], the particle spins [44,48], nonlocality [42,43,45], as well as, the effects of exchange-correlation of plasma particles [41,[45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Surface plasmons in a semi-bounded massless Dirac plasma

2018

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The collective excitation of surface plasmons in a massless Dirac plasma (e.g., graphene) half-space (bounded by air) is investigated using a relativistic quantum fluid model. The unique features of such surface waves are discussed and compared with those in a Fermi plasma. It is found that in contrast to Fermi plasmas, the long-wavelength surface plasmon frequency (ω) in massless Dirac plasmas is explicitly nonclassical, i.e., ω ∝ 1/ √ , where h = 2π is the Planck's constant. Besides some apparent similarities between the surface plasmon frequencies in massless Dirac plasmas and Fermi plasmas, several notable differences are also found and discussed. Our findings elucidate the properties of surface plasmons that may propagate in degenerate plasmas where the relativistic and quantum effects play a vital role.

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Section: Introductionmentioning

confidence: 99%

Surface plasmons in a semi-bounded massless Dirac plasma

2018

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“…The propagation of surface waves in plasmas and in conducting solids has been a topic o f important research over the last many years [1][2][3][4][5][6][7][8][9][10][11][12]. Surface Plasmon (SP) waves can be excited due to the collective oscillation of free electrons at the interface of plasmas of different densities or plasma -vacuum interface.…”

Section: Introductionmentioning

confidence: 99%

Surface plasmon oscillations in a semi-bounded semiconductor plasma

Shahmansouri

Misra

2018

Plasma Sci. Technol.

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We study the dispersion properties of surface plasmon oscillations in a semi -bounded semiconductor plasma with the effects of the Coulomb exchange force associated with the spin polarization of electrons and holes as well as the effects of the Fermi degenerate pressure and the quantum Bohm potential. Starting from a quantum hydrodynamic (QHD) model coupled to the Poisson equation, we derive the general dispersion relation for surface plasma waves. Previous results in this context are recovered. The dispersion properties of the surface waves are analyzed in some particular cases of interest and the relative influence of the quantum forces on these waves are also studied for a nano-sized GaAs semiconductor plasma. It is found that the Coulomb exchange effects significantly modify the behaviors of the surface plasmon waves. The present results are applicable to understand the propagation characteristics of surface waves in solid density plasmas.

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“…[21,22] Excitation of Transverse Magnetic (TM) surface waves in magnetized spin quantum plasmas was also studied by Mohamed, and he used an approximate method to obtain dispersion relation; therefore, the importance of the spin effect is not clearly shown in his results. [25,26] Those effects were found to facilitate the propagation of surface waves. [24] The effect of an external magnetic field and collision on the propagation of surface waves in quantum plasmas was studied in our previous works.…”

Section: Introductionmentioning

confidence: 99%

“…[24] The effect of an external magnetic field and collision on the propagation of surface waves in quantum plasmas was studied in our previous works. [25,26] Those effects were found to facilitate the propagation of surface waves.…”

Section: Introductionmentioning

confidence: 99%

Spin effect on propagation of surface waves in a magneto‐active quantum plasma

Khorashadizadeh

Majedi

Niknam

2018

Contributions to Plasma Physics

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The linear response theory has been employed to investigate the effect of electrons' intrinsic spin on the propagation of surface waves in a magneto-active quantum plasma half-space. Using fluid Maxwell equations, we obtained two coupled differential equations for perturbed magnetic field and density. The method of characteristic equation is used to find the exact solution to the system of coupled differential equations and exact dispersion relation for the quantum surface waves. The dispersion relation is numerically analysed to study spin and magnetization effects, and it is shown that both of these effects increase group velocity of surface waves, while spin effect reduces phase velocity as a result of the opposite direction of magnetic moment of electrons with respect to external magnetic field. KEYWORDShalf-spin quantum plasma, magnetization current, magnetized plasma, surface waves 1

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Propagation of surface waves on a semi-bounded quantum magnetized collisional plasma

Cited by 24 publications

References 28 publications

Surface plasmons in a semi-bounded massless Dirac plasma

Surface plasmons in a semi-bounded massless Dirac plasma

Surface plasmon oscillations in a semi-bounded semiconductor plasma

Spin effect on propagation of surface waves in a magneto‐active quantum plasma

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