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Spin effect on propagation of surface waves in a magneto‐active quantum plasma
Author(s) -
Khorashadizadeh S.M.,
Majedi S.,
Niknam A.R.
Publication year - 2018
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201700087
Subject(s) - physics , dispersion relation , condensed matter physics , magnetization , magnetic field , spin wave , spin polarization , electron , electron magnetic dipole moment , quantum electrodynamics , quantum mechanics , ferromagnetism
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.