Spin-drift transport and its applications

Details Spin-drift transport and its applications Spin-drift transport and its applications

2002-01-25

arxiv.org/abs/cond-mat/0201481v1

Physics

Condensed Matter

4 pages, 2 eps figures

Scientific paper

10.1103/PhysRevB.67.014421

We study the generation of non-equilibrium spin currents in systems with spatially-inhomogeneous magnetic potentials. For sufficiently high current densities, the spin polarization can be transported over distances significantly exceeding the intrinsic spin-diffusion length. This enables applications that are impossible within the conventional spin-diffusion regime. Specifically, we propose dc measurement schemes for the carrier spin relaxation times, $T_1$ and $T_2$, as well as demonstrate the possibility of spin species separation by driving current through a region with an inhomogeneous magnetic potential.

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