Nonlinear Electron and Spin Transport in Semiconductor Superlattices

  title={Nonlinear Electron and Spin Transport in Semiconductor Superlattices},
  author={Luis L. Bonilla and Luigi Barletti and M. Alvaro},
  journal={SIAM J. Appl. Math.},
Nonlinear charge transport in strongly coupled semiconductor super lattices is described by two-miniband Wigner-Poisson kinetic equations with BGK collision terms. The hyperbolic limit, in which the collision frequencies are of the same order as the Bloch frequencies due to the electric field, is investigated by means of the Chapman-Enskog perturbation technique, leading to nonlinear drift-diffusion equations for the two miniband populations. In the case of a lateral superlattice with spin… 

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