Spontaneous Emergence of Persistent Spin Helix from Homogeneous Spin Polarization

Abstract

We demonstrate that a homogeneous spin polarization in one-dimensional structures of finite length in the presence of Bychkov-Rashba spin-orbit coupling decays spontaneously toward a persistent spin helix. The analysis of formation of spin helical state is presented within a novel approach based on a mapping of spin drift-diffusion equations into a heat equation for a complex field. Such a strikingly different and simple method allows generating robust spin structures whose properties can be tuned by the strength of the spin orbit interaction and/or structure's length. We generalize our results for two-dimensional case predicting formation of persistent spin helix in two-dimensional channels from homogeneous spin polarization.

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Cited by in corpus (11)

• Persistent Spin Textures in Semiconductor Nanostructures
• Theory of coupled spin-charge transport due to spin-orbit interaction in inhomogeneous two-dimensional electron liquids
• Theory of spin noise in nanowires
• Relaxation of flying spin qubits in quantum wires by hyperfine interaction
• Spin freezing by Anderson localization in one-dimensional semiconductors
• Kinetics of Spin Relaxation in Wires and Channels: Boundary Spin Echo and Tachyons
• Collective Spin-Hall Effect for Electron-Hole Gratings
• Decay of Persistent Spin Helix due to the Spin Relaxation at Boundaries
• Nonlinear spin Hall effect in GaAs (110) quantum wells
• Spin relaxation in Rashba rings
• Dynamics of Spin Relaxation in Finite-Size 2D Systems: an Exact Solution