Spin relaxation in the presence of electron-electron interactions

Abstract

The D'yakonov-Perel' spin relaxation induced by the spin-orbit interaction is examined in disordered two-dimensional electron gas. It is shown that, because of the electron-electron interactions different spin relaxation rates can be obtained depending on the techniques used to extract them. It is demonstrated that the relaxation rate of a spin population is proportional to the spin-diffusion constant D_s, while the spin-orbit scattering rate controlling the weak-localization corrections is proportional to the diffusion constant D, i.e., the conductivity. The two diffusion constants get strongly renormalized by the electron-electron interactions, but in different ways. As a result, the corresponding relaxation rates are different, with the difference between the two being especially strong near a magnetic instability or near the metal-insulator transition.

To appear in Phys. Rev. Lett. (2006)

References in corpus (4)

• Metal-insulator transition in two-dimensional electron systems
• Metal-Insulator Transition in Disordered Two-Dimensional Electron Systems
• Observation of spin Coulomb drag in a two-dimensional electron gas
• Chiral spin resonance and spin-Hall conductivity in the presence of the electron-electron interactions

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• Electron Spin Resonance in a Two-Dimensional Fermi Liquid with Spin-Orbit Coupling
• Spin dynamics in the strong spin-orbit coupling regime
• Theoretical study of interacting hole gas in p-doped bulk III-V semiconductors
• Nonlinear $\sigma$-model for disordered systems with intrinsic spin-orbit coupling
• Spectral Crossovers and Universality in Quantum Spin-chains Coupled to Random Fields
• Spin dynamics of two-dimensional electrons with Rashba spin-orbit coupling and electron-electron interactions
• Signatures of spectral crossovers in the short- and long-range spectral correlations of a disordered spin-chain with Kramers degeneracy