Spin effects on the EM wave modes in magnetized plasmas

Abstract

The spin effects on the electromagnetic (EM) wave propagating in arbitrary direction in magnetized plasma are considered. The dispersion relations for EM propagating parallel and perpendicular to the external magnetic field are obtained. It is shown that the spin effects have significant influence on the low frequency modes. New wave modes appear both in left-hand polarized waves propagating parallel to the external magnetic field and in the traditional ordinary waves propagating perpendicular to the external magnetic field. Particularly, the new modes of the latter may exist even in moderate-density magnetized plasmas.

On the formation of spin dependent double layer structure in astrophysical plasmas

“…In recent years, it has been pointed out that electron spin effect is another quantum mechanical effect, which has significant impact on plasma behaviour. [18][19][20][21][22][23] To study the spin effect the QHD model for spin-1/2 particles has been proposed in refs. [24,25].…”

Hydrodynamic analysis of electrostatic counter‐streaming instability in a spin‐polarized electron–positron–ion plasma

“…However, the spin-related effects in quantum plasma play a special role as has been investigated in the last decade. [20][21][22][23][24][25] The spin effect on the plasma properties has been studied since the beginning of the introduction of the QHD models for particles demonstrating a half spin. 26 In most of the literature, the contribution of spin effect via spin magnetohydrodynamics gives interesting results in magnetized plasma.…”

“…[32][33][34][35][36] The combined effect of the exchange interaction and Bohm potential on the frequency spectra of obliquely propagating electrostatic waves has been studied, and it has been concluded that these effects have an opposite effect on the phase velocity of the waves. [37] Recently, the existence of new spin-dependent transverse waves in the spectra of obliquely propagating extraordinary waves has been reported in refs [21,38]. The SSE-QHD model has been used to study the electrostatic beam-driven instabilities in bounded [39] and unbounded [40] electron-ion plasma.…”

Surface plasma wave in spin-polarized semiconductor quantum plasma

“…For highdensity plasma, quantum features due to the intrinsic magnetic moment of the electron become noticeable and their spin effect (Polyakov, 1979;Marklund and Brodin, 2007;Brodin and Marklund, 2008) in plasma are found to be somewhat different from those of non-spin (Rastunkov and Krainov, 2004;Manfredi, 2005) quantum effects in plasma. During the last decade, there have been many papers devoted to the influence of spin-1/2 effect on dynamics of plasma (Shahid et al, 2012;Hu et al, 2016). Previous studies in quantum plasma have been performed taking the macroscopic average of the electron spin.…”