【摘要】 提出了一种反对称磁垒纳米结构,并研究了其电子自旋输运的性质。结果表明,当考虑电子自旋与非均匀磁场的相互作用时,这种磁垒纳米结构具有很强的电子自旋极化效应。而且,电子的自旋极化度与系统的结构参数密切相关,因此通过调整磁条可以调控系统中自旋极化电子的行为。更多还原

【Abstract】 We propose a kind of asymmetric magnetic-barrier nanostructures and study its electron-spin transport properties. It is shown that, when the interaction between the electron spins and inhomogeneous magnetic field is considered this kind of magnetic-barrier nanostructures shows up an evident electron-spin polarization effect. Moreover, electron-spin polarization are relevant to the structure parameters of the system, so we can control spin-polarized electronic behavior by means of adjusting ferromagnetic stripes.更多还原