Relaxation mechanisms of the persistent spin helix

Abstract

We study the lifetime of the persistent spin helix in semiconductor quantum wells with equal Rashba- and linear Dresselhaus spin-orbit interactions. In order to address the temperature dependence of the relevant spin relaxation mechanisms we derive and solve semiclassical spin diffusion equations taking into account spin-dependent impurity scattering, cubic Dresselhaus spin-orbit interactions and the effect of electron-electron interactions. For the experimentally relevant regime we find that the lifetime of the persistent spin helix is mainly determined by the interplay of cubic Dresselhaus spin-orbit interaction and electron-electron interactions. We propose that even longer lifetimes can be achieved by generating a spatially damped spin profile instead of the persistent spin helix state.

12 pages, 2 figures

References in corpus (7)

• 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
• Spin current and polarization in impure 2D electron systems with spin-orbit coupling
• Effect of initial spin polarization on spin dephasing and electron g factor in a high-mobility two-dimensional electron system
• Spin relaxation in $n$-type GaAs quantum wells with transient spin grating
• Diffusive-Ballistic Crossover and the Persistent Spin Helix
• Random walk approach to spin dynamics in a two-dimensional electron gas with spin-orbit coupling

Cited by in corpus (16)

• Persistent Spin Textures in Semiconductor Nanostructures
• Persistent Skyrmion Lattice of Noninteracting Electrons with Spin-Orbit Coupling
• Suppressed decay of a laterally confined persistent spin helix
• Doppler velocimetry of spin propagation in a two-dimensional electron gas
• Dynamics of a localized spin excitation close to the spin-helix regime
• Unified theory of spin-dynamics in a two dimensional electron gases with arbitrary spin-orbit coping strength at finite temperature
• Spin drift and diffusion in one- and two-subband helical systems
• Theory of the inverse spin galvanic effect in quantum wells
• Enhanced longevity of the spin helix in low-symmetry quantum wells
• Signatures of spin-preserving symmetries in two-dimensional hole gases
• Evolution of the persistent spin helix in the presence of Hartree-Fock fields
• Microscopic theory for the Doppler velocimetry of spin propagation in semiconductor quantum wells
• Nonlinear spin Hall effect in GaAs (110) quantum wells
• Reliable modeling of weak antilocalization for accurate spin-lifetime extraction
• Gap Anisotropy in Layered Superconductors Due to Rashba and Dresselhaus Spin-Orbit Interactions
• Numerical analysis of the spin-orbit coupling parameters in III-V quantum wells using 8-band Kane model and finite-difference method