Spin electron acoustic periodic waves in a degenerate plasma: oblique propagation

Abstract Separate spin evolution quantum hydrodynamic (SSE-QHD) model has led to a new type of spin-electron acoustic waves (SEAWs). In the present work by employing the (SSE-QHD) model we investigate the periodic structures of obliquely propagating SEAW. The nonlinear periodic wave solutions are derived by using reductive perturbation method. The periodic structures, involving both parallel and oblique propagation, are shown to exist for all permissible values of the spin polarization factor δ . However, only rarefactive periodic structures are observed in both cases. Additionally, the influence of spin polarization and obliqueness on the structure profiles is analyzed. This research could contribute to a deeper understanding of new nonlinear structures in spin-polarized plasmas.