A Separated Spin Evolution Quantum Hydrodynamics Model is employed to investigate arbitrary amplitude ion-acoustic waves in magnetized plasma, which consists of inertia-less degenerated electrons with spin-up $n_{\uparrow }$ and spin-down $n_{\downarrow }$ states, as well as inertial classical ions. In a two-dimensional plasma geometry, a homogeneous magnetic field is assumed to be directed along the z-axis, that is, $\mathbf{B}=B_0\widehat{z}$. In the linear analysis, two branches of waves propagation are found to occur in the oblique direction. The characteristics of large-amplitude ions solitary waves propagation in oblique direction are studied through an energy-balance equation, by applying a Sagdeev potential approach. The parametric role of the spin density polarization ratio $\kappa$ on the properties of solitary wave structures, as well as other important plasma parameters, is traced analytically. The scope of our work is significant to study dilute magnetic semiconductors, magnetosphere, and as well as astrophysical systems.

中文翻译：

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在电子自旋极化等离子体中倾斜传播的孤立脉冲的任意幅度

分离自旋演化量子流体动力学模型用于研究磁化等离子体中的任意幅度离子声波，其由具有自旋的无惯性退化电子组成$n_{\uparrow }$和降速$n_{\downarrow }$状态，以及惯性经典离子。在二维等离子体几何结构中，假设均匀磁场沿z轴方向，即$\mathbf{乙}={乙}_0\widehat{z}$. 在线性分析中，发现波传播的两个分支发生在倾斜方向。应用Sagdeev势方法，通过能量平衡方程研究了大振幅离子孤波斜向传播的特性。自旋密度极化比的参数作用$\kappa$对孤立波结构的性质以及其他重要的等离子体参数进行了分析追踪。我们的工作范围对于研究稀磁半导体、磁层以及天体物理系统具有重要意义。