Eur. Phys. J. Plus (2018) 133: 77
https://doi.org/10.1140/epjp/i2018-11911-6

Regular Article

Propagation of surface waves in a spin 1/2 magnetized collisional quantum plasma half-space

¹ Physics Department, University of Birjand, Birjand, Iran
² Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran

Received: 9 December 2017
Accepted: 29 January 2018
Published online: 27 February 2018

Abstract

The quantum magnetohydrodynamics model, including the correction terms of the Bohm potential, quantum pressure, collision and intrinsic spin of electrons, is employed to investigate the propagation of surface waves in a semi-bounded spin 1/2 magnetized collisional quantum plasma. The parametric equation method is used to derive the highly nonlinear dispersion relation. Furthermore, the exact dispersion relation is solved numerically. It is shown that the external magnetic field increases the group and phase velocities of the surface waves in both collisionless and collisional quantum plasma, while the spin contribution leads to a decrease in the phase velocity. In the collisional quantum plasma, the damping rate of the surface waves is increased by the external magnetic field and the spin of the electrons.