Circularly polarized modes in magnetized spin plasmas

Abstract

The influence of the intrinsic spin of electrons on the propagation of circularly polarized waves in a magnetized plasma is considered. New eigenmodes are identified, one of which propagates below the electron cyclotron frequency, one above the spin-precession frequency, and another close to the spin-precession frequency.\ The latter corresponds to the spin modes in ferromagnets under certain conditions. In the nonrelativistic motion of electrons, the spin effects become noticeable even when the external magnetic field $B_0$ is below the quantum critical\ magnetic field strength, i.e., $B_0<$ $B_Q=4.4138\times 10^9\mathrm{T}$ and the electron density satisfies $n_0\gg n_c\simeq 10^{32}$m${}^{-3}$. The importance of electron spin (paramagnetic) resonance (ESR) for plasma diagnostics is discussed.

10 pages

References in corpus (5)

• Spin magnetohydrodynamics
• Quantum plasma effects in the classical regime
• Autoresonant control of the many-electron dynamics in nonparabolic quantum wells
• Effects of the $g$-factor in semi-classical kinetic plasma theory
• Ferromagnetic behavior in magnetized plasmas

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• The ponderomotive force due to the intrinsic spin in extended fluid and kinetic models
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• Separated spin-up and spin-down evolution of degenerated electrons in two dimensional systems: Dispersion of longitudinal collective excitations in plane and nanotube geometry
• Hydrodynamic and kinetic models for spin-1/2 electron-positron quantum plasmas: Annihilation interaction, helicity conservation, and wave dispersion in magnetized plasmas
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• Kinetic analysis of spin current contribution to spectrum of electromagnetic waves in spin-1/2 plasma, Part II: Dispersion dependencies
• Dielectric permeability tensor and linear waves in spin-1/2 quantum kinetics with non-trivial equilibrium spin-distribution functions
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