Spin precession due to spin-orbit coupling in a two-dimensional electron gas with spin injection via ideal quantum point contact

Abstract

We present the analytical result of the expectation value of spin resulting from an injected spin polarized electron into a semi-infinitely extended 2DEG plane with [001] growth geometry via ideal quantum point contact. Both the Rashba and Dresselhaus spin-orbit couplings are taken into account. A pictorial interpretation of the spin precession along certain transport directions is given. The spin precession due to the Rashba term is found to be especially interesting since it behaves simply like a windshield wiper which is very different from the ordinary precession while that due to the Dresselhaus term is shown to be crystallographic-direction-dependent. Some crystallographic directions with interesting and handleable behavior of spin precession are found and may imply certain applicability in spintronic devices.

5 pages, 2 figures, submitted to Phys. Rev. B

References in corpus (7)

• Non-ballistic spin field-effect transistor
• Gate-Controlled Spin-Orbit Quantum Interference Effects in Lateral Transport
• Weak Antilocalization and Spin Precession in Quantum Wells
• Experimental Separation of Rashba and Dresselhaus Spin-Splittings in Semiconductor Quantum Wells
• Anisotropic transport in the two-dimensional electron gas in the presence of spin-orbit coupling
• Spin Orientation and Spin Precession in Inversion-Asymmetric Quasi Two-Dimensional Electron Systems
• Effect of bulk inversion asymmetry on the Datta-Das transistor

Cited by in corpus (11)

• Persistent spin helix in Rashba-Dresselhaus two-dimensional electron systems
• Quantum World-line Monte Carlo Method with Non-binary Loops and Its Application
• Persistent Skyrmion Lattice of Noninteracting Electrons with Spin-Orbit Coupling
• Manipulation of single electron spin in a GaAs quantum dot through the application of geometric phases: The Feynman disentangling technique
• Datta-Das transistor: Significance of channel direction, size-dependence of source contacts, and boundary effects
• Nonuniform Rashba-Dresselhaus spin precession along arbitrary paths
• Electronic structure and transport for a laser-field-irradiated quantum wire with Rashba spin-orbit coupling
• Rashba Spin Interferometer
• Precessionless spin transport wire confined in quasi-two-dimensional electron systems
• Confinement of spin-orbit induced Dirac states in quantum point contacts
• Spin relaxation: From 2D to 1D