  Degenerate plasmas with motionless ions show existence of three surface
waves: the Langmuir wave, the electromagnetic wave, and the zeroth sound.
Applying the separated spin evolution quantum hydrodynamics to half-space
plasma we demonstrate the existence of the surface spin-electron acoustic wave
(SSEAW). We study dispersion of the SSEAW. We show that there is hybridization
between the surface Langmuir wave and the SSEAW at rather small spin
polarization. In the hybridization area the dispersion branches are located
close to each other. In this area there is a strong interaction between these
waves leading to the energy exchange. Consequently, generating the Langmuir
waves with the frequencies close to hybridization area we can generate the
SSEAWs. Thus, we report a method of creation of the SEAWs.

Plasma Physics