Journal of Computational Electronics

, Volume 14, Issue 4, pp 879–887 | Cite as

Dissipative transport in superlattices within the Wigner function formalism



We employ the Wigner function formalism to simulate partially coherent, dissipative electron transport in biased semiconductor superlattices. We introduce a model collision integral with terms that describe energy dissipation, momentum relaxation, and the decay of spatial coherences (localization). Based on a particle-based solution to the Wigner transport equation with the model collision integral, we simulate quantum electronic transport at 10 K in a GaAs/AlGaAs superlattice and accurately reproduce its current density vs field characteristics obtained in experiment.


Wigner function Wigner transport equation Superlattice Quantum transport Dissipation Decoherence Density matrix 



The authors gratefully acknowledge support by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award DE-SC0008712. The work was performed using the resources of the UW-Madison Center for High Throughput Computing (CHTC).


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.University of Wisconsin – MadisonMadisonUSA

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