标题： 螺旋链手性界面处的自旋翻转散射 显示英文标题

标题： Spin-flip Scattering at a Chiral Interface of Helical Chains

摘要： 我们研究电子通过手性界面时的自旋翻转散射过程，该界面是右旋和左旋一维链之间的边界。 我们构建了一个由右旋和左旋一维三重螺旋链在$z=0$处通过最近邻跃迁和自旋-轨道耦合连接的最小$p$轨道模型。 对通过界面的自旋极化波包的动力学、格林函数以及界面附近的电子态进行了数值分析。 我们发现界面的微观结构非常重要，这强烈影响了局部电子轨道态。 除了自旋-轨道耦合外，这决定了在手性界面是否发生自旋翻转，并表明可以通过手性界面的轨道构型实现可能的自旋输运控制。 显示英文摘要

摘要： We investigate spin-flip scattering processes of electrons when they pass a chiral interface, which is the boundary between right- and left-handed one-dimensional chain. We construct a minimal $p$-orbital model consisting of the right- and left-handed one-dimensional threefold helical chains connected at $z=0$ with the nearest neighbor hopping and the spin-orbit coupling. The dynamics of spin-polarized wave packet passing through the interface, the Green's functions, and electronic states near the interface are analyzed numerically. We find that the microscopic structure of the interface is important and this strongly affects the local electronic orbital state. This in addition to the spin-orbit coupling determines whether the spin flip occurs or not at the chiral interface and suggests a possible spin transport control by the orbital configuration at the chiral interface.