Semiclassical path integral approach on spin relaxations in narrow wires
arXiv:0902.2828 · doi:10.1103/PhysRevB.79.125310
Abstract
The semiclassical path integral method has been applied for studying spin relaxation in a narrow 2D strip with the Rashba spin-orbit interaction. Our numerical calculations show a good agreement with the experimental data, although some features of experimental results are not clear yet. We also calculated the relaxation of a uniform spin-density distribution in the ballistic regime of very narrow wires. With the decreasing wire width, the spin polarization exhibits a transition from the exponential decay to the oscillatory Bessel-like relaxation. The SPI method has been also employed to calculate the relaxation of the particularly long-lived helix mode. A good agreement has been found with calculations based on the diffusion theory.
8 pages, 6 figures (to appear in Phys. Rev. B)
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Cited by in corpus (9)
- Spin dynamics in semiconductors
- Suppressed decay of a laterally confined persistent spin helix
- Duality of the spin and density dynamics for two-dimensional electrons with a spin-orbit coupling
- Kinetics of Spin Relaxation in Wires and Channels: Boundary Spin Echo and Tachyons
- Ballistic spin resonance in multisubband quantum wires
- Spin polarization oscillations without spin precession: spin-orbit entangled resonances in quasi-one-dimensional spin transport
- Effects of interaction on field-induced resonances in confined Fermi liquid
- Dynamics of Spin Relaxation in Finite-Size 2D Systems: an Exact Solution
- Spin relaxation: From 2D to 1D