Two miniband model for self-sustained oscillations of the current through resonant-tunneling semiconductor superlattices

@article{Alvaro2010TwoMM,
  title={Two miniband model for self-sustained oscillations of the current through resonant-tunneling semiconductor superlattices},
  author={M. Alvaro and Luis L. Bonilla},
  journal={Physical Review B},
  year={2010},
  volume={82},
  pages={035305}
}
A two miniband model for electron transport in semiconductor superlattices that includes scattering and interminiband tunnelling is proposed. The model is formulated in terms of Wigner functions in a basis spanned by Pauli matrices, includes electron-electron scattering in the Hartree approximation and modified Bhatnagar-Gross-Krook collision tems. For strong applied fields, balance equations for the electric field and the miniband populations are derived using a ChapmanEnskog perturbation… 

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