Orbital mechanisms of electron-spin manipulation by an electric field
Orbital mechanisms of electron-spin manipulation by an electric field
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DOI：
10.1103/physrevlett.91.126405
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发表时间：
2003-09-19
影响因子：
8.6
通讯作者：
Efros, AL
中科院分区：
文献类型：
--
作者：
Rashba, EI;Efros, AL
发展了一种通过施加在量子阱上的随时间变化的栅极电压来操纵准二维电子自旋的理论。Dresselhaus和Rashba自旋轨道耦合机制被证明是相当有效的，用于此目的。自旋响应的椭圆形到平面的电场是由于偏离严格的2D限制，并由自旋，回旋，和限制频率的比率控制。这种响应对磁场方向的依赖性表明了竞争自旋轨道耦合机制的强度。
A theory of spin manipulation of quasi-two-dimensional (2D) electrons by a time-dependent gate voltage applied to a quantum well is developed. The Dresselhaus and Rashba spin-orbit coupling mechanisms are shown to be rather efficient for this purpose. The spin response to a perpendicular-to-plane electric field is due to a deviation from the strict 2D limit and is controlled by the ratios of the spin, cyclotron, and confinement frequencies. The dependence of this response on the magnetic field direction is indicative of the strengths of the competing spin-orbit coupling mechanisms.