发表机构
School of Vocational Studies and Applied Sciences, Gautam Buddha University; Department of Physics, Adamas University; Physics and Applied Mathematics Unit, Indian Statistical Institute（古特木佛陀大学职业与应用科学学院; 亚当斯大学物理系; 印度统计学院物理与应用数学单元）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究在紧束缚框架下结合Landauer-Büttiker形式，发现螺旋反铁磁体中自旋-轨道耦合与磁手性协同可同时产生三轴自旋极化，长程跳跃显著增强自旋过滤效应。
AI 中文摘要
我们在紧束缚框架下研究了存在自旋-轨道耦合的非共线螺旋反铁磁体中的自旋相关输运。利用Landauer-Büttiker形式，我们分析了由螺旋磁纹理与自旋-轨道相互作用的联合效应所产生的自旋极化。我们发现，有限的自旋极化可以同时沿$\hat{x}$、$\hat{y}$和$\hat{z}$方向产生，这与传统自旋过滤系统中通常观察到的以单轴为主的自旋极化形成对比。多方向自旋极化源于非共线磁序引入的对称性破缺。我们进一步表明，自旋极化在存在自旋-轨道耦合时被显著改变，并且它强烈依赖于与螺旋系统相关的参数。特别是，长程跳跃显著增强了自旋过滤效应，导致沿所有三个空间方向产生大的自旋极化分量。
英文摘要
We investigate spin-dependent transport in a non-collinear helical antiferromagnet in the presence of spin-orbit coupling within a tight-binding framework. Using the Landauer-Büttiker formalism, we analyze the generation of spin polarization arising from the combined effects of the helical magnetic texture and spin-orbit interaction. We find that finite spin polarization can be generated simultaneously along the $\hat{x}$, $\hat{y}$, and $\hat{z}$-directions, in contrast to the predominantly single-axis spin polarization commonly observed in conventional spin-filtering systems. The multidirectional spin polarization originates from the symmetry breaking introduced by the non-collinear magnetic order. We further show that the spin polarization is modified significantly in the presence of spin-orbit coupling and it has strong dependence on the parameters associated with the helical system. In particular, long-range hopping significantly enhances the spin-filtering effect, leading to large spin polarization components along all three spatial directions.
Comments13 pages, 11 figures. Comments are welcome
