正交电场作用型自旋场效应管的自旋极化控制（英文）

Spin polarization control of the spin field effect transistors due to two orthogonal electric fields

研究了电场调控型自旋场效应管的量子输运过程。该场效应管主要由双正交电场和Rashba自旋轨道耦合共同调制。运用散射矩阵方法并结合介观体系的相关输运理论,揭示了自旋场效应管在各参数调控下的自旋量子输运过程,其自旋输运规律可由相关理论给予解释。数值计算表明,与平行电场相比,对于自旋轨道耦合型自旋场效应管的量子输运,垂直电场的调制能够导致更加明显的自旋翻转。

Quantum transports of the spin field effect transistors （SFET） tuned by electric field are investigated inthis work. Target modulations of the SFET are two orthogonal electric fields and the Rashba spin-orbit coupling（SOC）. By using the scattering matrix method and related transport theories in mesoscopic systems, investigationsreveal that spin quantum transport of the SFET can be adjusted by the parametric modulations. Implements of thespin transport are systematic presented in theory. Numerical calculations show that compared to the parallel electricfield, the perpendicular coupling modulations can make an even more remarkable spin flipping to the quantumtransport in the SOC system.