Spin diffusion and torques in disordered antiferromagnets.

  title={Spin diffusion and torques in disordered antiferromagnets.},
  author={Aur{\'e}lien Manchon},
  journal={Journal of physics. Condensed matter : an Institute of Physics journal},
  volume={29 10},
  • A. Manchon
  • Published 30 July 2016
  • Physics, Medicine
  • Journal of physics. Condensed matter : an Institute of Physics journal
We have developed a drift-diffusion equation of spin transport in collinear bipartite metallic antiferromagnets. Starting from a model tight-binding Hamiltonian, we obtain the quantum kinetic equation within Keldysh formalism and expand it to the lowest order in spatial gradient using Wigner expansion method. In the diffusive limit, these equations track the spatio-temporal evolution of the spin accumulations and spin currents on each sublattice of the antiferromagnet. We use these equations to… 

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