Suppressed decay of a laterally confined persistent spin helix
arXiv:1410.1470 · doi:10.1103/PhysRevB.90.201306
Abstract
We experimentally investigate the dynamics of a persistent spin helix in etched GaAs wire structures of 2 to 80 um width. Using magneto-optical Kerr rotation with high spatial resolution, we determine the lifetime of the spin helix. A few nanoseconds after locally injecting spin polarization into the wire, the polarization is strongly enhanced as compared to the two-dimensional case. This is mostly attributed to a transition to one-dimensional diffusion, strongly suppressing diffusive dilution of spin polarization. The intrinsic lifetime of the helical mode is only weakly increased, which indicates that the channel confinement can only partially suppress the cubic Dresselhaus spin-orbit interaction.
References in corpus (24)
- Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
- Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
- Helical liquids and Majorana bound states in quantum wires
- Majorana fermions in a tunable semiconductor device
- Non-ballistic spin field-effect transistor
- An Exact SU(2) Symmetry and Persistent Spin Helix in a Spin-Orbit Coupled System
- Emergence of the persistent spin helix in semiconductor quantum wells
- Weak Antilocalization and Spin Precession in Quantum Wells
- Direct mapping of the formation of a persistent spin helix: Supplementary information
- Observation of spin Coulomb drag in a two-dimensional electron gas
- Observation of a One-Dimensional Spin-Orbit Gap in a Quantum Wire
- Effect of Spin-Orbit Interaction and In-Plane Magnetic Field on the Conductance of a Quasi-One-Dimensional System
- Suppression of Spin Relaxation in Submicron InGaAs Wires
- Waveguide diffusion modes and slowdown of D'yakonov-Perel' spin relaxation in narrow 2-D semiconductor channels
- Spin relaxation dynamics of quasiclassical electrons in ballistic quantum dots with strong spin-orbit coupling
- Dynamics of a localized spin excitation close to the spin-helix regime
- Enhanced spin-orbit scattering length in narrow Al_xGa_{1-x}N/GaN wires
- Unified theory of spin-dynamics in a two dimensional electron gases with arbitrary spin-orbit coping strength at finite temperature
- Relaxation mechanisms of the persistent spin helix
- Suppressed spin dephasing for 2D and bulk electrons in GaAs wires due to engineered cancellation of spin-orbit interaction terms
- Semiclassical path integral approach on spin relaxations in narrow wires
- Spin-dephasing anisotropy for electrons in a diffusive quasi-1D GaAs wire
- Modeling of diffusion of injected electron spins in spin-orbit coupled microchannels
- Evolution of the persistent spin helix in the presence of Hartree-Fock fields
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- Emergence of Rashba spin valley state in two-dimensional strained bismuth oxychalcogenides BiOSe
- Direct imprinting of arbitrary spin textures using programmable structured light in a semiconductor two-dimensional electron gas