Abstract
The dispersion properties of electromagnetic surface modes propagating at the planar interface between two structured quantum magnetoplasmas composed of electrons, positrons, and charged dust grains of different densities and between a plasma and free space with spin quantum effects are studied. It is shown that even in the absence of charged dust impurities, the spin quantum effects can lead to a new low frequency (in comparison to the electron/positron gyrofrequency) Alfvén surface modes which otherwise do not exist. The important applications to plasmas in the vicinity of pulsars and magnetars as well as in the dense astrophysical plasma environments where the particle density is about 1020–1025m−3 are discussed.
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