Diffusion equation and spin drag in spin-polarized transport
arXiv:cond-mat/0107149 · doi:10.1103/PhysRevB.64.245308
Abstract
We study the role of electron-electron interactions for spin polarized transport using the Boltzmann equation and derive a set of coupled transport equations. For spin polarized transport the electron-electron interactions are important, because they tend to equilibrate the momentum of the two spin species. This ``spin drag'' effect enhances the resistivity of the system. The enhancement is stronger the lower the dimension and should be measurable in for example a two dimensional electron gas with ferromagnetic contacts. We also include spin flip scattering which has two effects: it equilibrates the spin density imbalance and, provided it has a non s-wave component, also the current imbalance.
9 pages, 1 figure
References in corpus (5)
- Basic obstacle for electrical spin-injection from a ferromagnetic metal into a diffusive semiconductor
- Coulomb drag between two-dimensional electron systems
- Plasmon enhancement of Coulomb drag in double quantum well systems
- Spin diffusion in doped semiconductors: the role of Coulomb interactions
- Electron--electron scattering in linear transport in two-dimensional systems
Cited by in corpus (33)
- Spintronics: Fundamentals and applications
- Spin dynamics in semiconductors
- Coulomb drag
- Observation of spin Coulomb drag in a two-dimensional electron gas
- Theory of spin-polarized bipolar transport in magnetic p-n junctions
- Synthetic electric fields and phonon damping in carbon nanotubes and graphene
- Spin Coulomb drag in the two-dimensional electron liquid
- Spin Drag and Spin-Charge Separation in Cold Fermi Gases
- Theory of coupled spin-charge transport due to spin-orbit interaction in inhomogeneous two-dimensional electron liquids
- Doppler velocimetry of spin propagation in a two-dimensional electron gas
- Coulomb Drag in Altermagnets
- Coulomb corrections to the extrinsic spin-Hall effect of a two-dimensional electron gas
- Spin-Hall effect and spin-Coulomb drag in doped semiconductors
- Coulomb Drag and Spin Coulomb Drag in the presence of Spin-orbit Coupling
- Relaxation mechanisms of the persistent spin helix
- Spin Coulomb drag beyond the random phase approximation
- Spin-drag relaxation time in one-dimensional spin-polarized Fermi gases
- Observing the spin-Coulomb drag in spin-valve devices
- Generation of spin current by Coulomb drag
- Time-dependent current-density-functional theory of spin-charge separation and spin drag in one-dimensional ultracold Fermi gases
- Dynamics of Spin-Polarized Electron Liquid and Spin Pendulum
- Spin-valley collective modes of the electron liquid in graphene
- Interacting drift-diffusion theory for photoexcited electron-hole gratings in semiconductor quantum wells
- Chirality and intrinsic dissipation of spin modes in two-dimensional electron liquids
- Equilibration and Approximate Conservation Laws: Dipole Oscillations and Perfect Drag of Ultracold Atoms in a Harmonic Trap
- Short-time Spin Dynamics in Strongly Correlated Few-fermion Systems
- Quantum Monte Carlo simulation for the spin-drag conductance of the Hubbard model
- Microscopic theory for the Doppler velocimetry of spin propagation in semiconductor quantum wells
- Resistance asymmetry of a two-dimensional electron gas caused by an effective spin injection
- Low-temperature spin Coulomb drag in a two-dimensional electron gas
- Spin polarization oscillations in a magnetically inhomogeneous conducting ring
- Drag dynamics in one-dimensional Fermi systems
- The electrical resistance of spatially varied magnetic interface. The role of normal scattering