Spin Transport in a Quantum Wire

Details Spin Transport in a Quantum Wire Spin Transport in a Quantum Wire

2001-06-22

arxiv.org/abs/cond-mat/0106456v1

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 5 figures, REVTEX

Scientific paper

10.1103/PhysRevB.65.115108

We study the effect of electron-electron backscattering interactions on spin transport in a quantum wire. Even if these interactions have no significant effect on charge transport, they strongly influence the transport of spin. We use the quantum Boltzmann equation in the collision approximation to derive equations of motion for spin current and magnetization. In the limit of small perturbations from equilibrium, we explain the existence of `precessional' and `diffusive' behaviors. We also discuss the low-temperature non-linear decay of an uniform spin current outside the hydrodynamic regime.

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