Abstract
Electrical transport in semiconductor superlattices is studied within a fully self-consistent quantum transport model based on nonequilibrium Green functions, including phonon and impurity scattering. We compute both the drift-velocity-held relation and the momentum distribution function covering the whole held range from linear response to negative differential conductivity. The quantum results are compared with the respective results obtained from a Monte Carlo solution of the Boltzmann equation. Our analysis thus sets the limits of validity for the semiclassical theory in a nonlinear transport situation in the presence of inelastic scattering.
Original language | English |
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Journal | Physical Review Letters |
Volume | 83 |
Issue number | 4 |
Pages (from-to) | 836-839 |
ISSN | 0031-9007 |
DOIs | |
Publication status | Published - 1999 |
Bibliographical note
Copyright (1999) by the American Physical Society.Keywords
- MODEL
- MINIBAND TRANSPORT
- NEGATIVE DIFFERENTIAL CONDUCTIVITY
- HOPPING TRANSPORT
- SEMICONDUCTOR SUPERLATTICES