Abstract
The spin Coulomb drag constitutes an intrinsic source of dissipation for spin currents generated by charged carriers. The effect is due to Coulomb scattering between carriers of opposite spin moving with different velocities, and is of importance in three-, two-, and one-dimensional systems. The spin Coulomb drag has various practical implications for spintronics, playing an important role in the spin injection and drift-diffusion in semiconductors, and in the power loss of spin circuits. It affects spin-optical excitations and contributes to the line width of spin plasmons. The Feature Article by Irene D'Amico and Carsten Ullrich, which starts on page 235, provides an overview of the topic.
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