Tuning the Spin Hall Effect in a Two-Dimensional Electron Gas

Abstract

We provide a theoretical framework for the electric field control of the electron spin in systems with diffusive electron motion. The approach is valid in the experimentally important case where both intrinsic and extrinsic spin-orbit interaction in a two-dimensional electron gas are present simultaneously. Surprisingly, even when the extrinsic mechanism is the dominant driving force for spin Hall currents, the amplitude of the spin Hall conductivity may be considerably tuned by varying the intrinsic spin-orbit coupling via a gate voltage. Furthermore we provide an explanation of the experimentally observed out-of-plane spin polarization in a (110) GaAs quantum well.

References in corpus (23)

• Spin Hall effect
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• Dissipationless Quantum Spin Current at Room Temperature
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• Out-of-plane spin polarization from in-plane electric and magnetic fields
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• Intrinsic Spin Hall Effect in the presence of Extrinsic Spin-Orbit Scattering
• "Phase Diagram" of the Spin Hall Effect
• Spin-Hall effect in a [110] quantum well
• Magneto-spin Hall conductivity of a two-dimensional electron gas
• Bulk electron spin polarization generated by the spin Hall current

Cited by in corpus (29)

• Spin-orbit interaction in a two-dimensional electron gas: a SU(2) formulation
• Non-Abelian gauge fields in the gradient expansion: generalized Boltzmann and Eilenberger equations
• Diffusive and precessional spin dynamics in a two-dimensional electron gas with disorder: a gauge theory view
• Theory of current-induced spin polarizations in an electron gas
• Side-jumps in the spin-Hall effect: construction of the Boltzmann collision integral
• Diffusive versus local spin currents in dynamic spin pumping systems
• Onsager relations in a two-dimensional electron gas with spin-orbit coupling
• Duality of the spin and density dynamics for two-dimensional electrons with a spin-orbit coupling
• Robust to impurity-scattering spin Hall effect in two-dimensional electron gas
• Spin Hall effects due to phonon skew scattering
• Spin orientation by electric current in (110) quantum wells
• Dynamic spin-Hall effect and driven spin helix for linear spin-orbit interactions
• Valley Hall effect caused by the phonon and photon drag
• Anomalous spin precession and spin Hall effect in semiconductor quantum wells
• Spin Accumulation in Diffusive Conductors with Rashba and Dresselhaus Spin-Orbit Interaction
• Inverse Spin Hall Effect and Anomalous Hall Effect in a Two-Dimensional Electron Gas
• Interplay of intrinsic and extrinsic mechanisms to the spin Hall effect in a two-dimensional electron gas
• Electrical spin orientation, spin-galvanic and spin-Hall effects in disordered two-dimensional systems
• Spin dynamics of cold fermions with synthetic spin-orbit coupling
• Spin thermoelectrics in a disordered Fermi gas
• Room temperature spin thermoelectrics in metallic films
• Spin-charge coupled dynamics driven by a time-dependent magnetization
• Current-induced spin polarization in InGaAs and GaAs epilayers with varying doping densities
• Extrinsic spin Hall effect in inhomogeneous systems
• Spin evolution of cold atomic gases in SU(2)$\otimes$U(1) fields
• Driving spin and charge in quantum wells by surface acoustic waves
• The spin Hall effect
• Spin polarization induced by an electric field in the presence of weak localization effects
• Inverse spin galvanic effect in the presence of impurity spin-orbit scattering: a diagrammatic approach