Abstract
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.
Highlights
The spin response to a perpendicular-toplane 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
Most of the schemes proposed for computing with electron spins in quantum dots (QDs) and quantum wells (QWs) are based on using timedependent magnetic fields
We show that it is strong enough in the geometry when the time-dependent potential is applied to the gate; i.e., the time-dependent electric field is perpendicular to the well
Summary
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