探索多型和双平面纳米线的输运性质：从隧穿相位时间到自旋轨道相互作用效应
Exploring the transport properties of polytypic and twin-plane nanowires: from tunneling phase-time to spin-orbit interaction effects
摘要：
纳米线晶体结构的多样性引起了独特和新颖的传输现象。特别是，我们已经探索了在双平面纳米线的传输通道的调谐和内置的多型纳米线的自旋-轨道电位分布的应变场调制所产生的超晶格轮廓，以实现自旋过滤器。采用多组分散射方法，结合传输矩阵方法描述了载流子的相位时间。该系统在获得负群速波包传播条件方面显示出优势。此外，自旋输运效应的潜在配置文件与体积自旋轨道体反转不对称性，目前对多型纳米线，通过逆龙格库塔法。利用特殊的对称性的激发态，我们的特点是占主导地位的自旋依赖于结构参数，导致有效的自旋过滤。
英文摘要：
The variety of nanowire crystal structures gave rise to unique and novel transport phenomena. In particular, we have explored the superlattice profile generated by strain field modulation in twinplane nanowires for the tuning of transport channels and the built-in spin-orbit potential profile of polytypic nanowires, in order to realize a spin filter. The Multicomponent Scattering Approach has been used in terms of the Transfer Matrix Method to describe the phase-time of charge carriers. This system showed advantages for attaining conditions for the propagation of wave packets with negative group velocity. Moreover, the spin transport effect of a potential profile with volumetric spin-orbit bulk inversion asymmetry, as present on polytypic nanowires, was described through the Reverse Runge-Kutta Method. Using the peculiar symmetry of the excited states we have characterized a dominant spin dependence on structural parameters that results in effective spin filtering.
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