Journal
PHYSICAL REVIEW B
Volume 62, Issue 8, Pages 4853-4857Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.62.4853
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We introduce a distinctive feature of spin-polarized transport, the spin Coulomb drag: there is an intrinsic source of friction for spin currents due to the Coulomb interaction between spin up and spin down electrons. We calculate the associated spin trans-resistivity in a generalized random-phase approximation and show that, to the leading order in the interactions, it has no contribution from correlated impurity scattering. We show that, in an appropriate range of parameters, such resistivity is measurable, and we propose an experiment to measure it.
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