Dissipative transport in superlattices within the Wigner function formalism

Abstract

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.

Special JCEL issue on Wigner functions, http://link.springer.com/journal/10825/14/4/page/1

References in corpus (3)

• A Signed Particle Formulation of Non-Relativistic Quantum Mechanics
• Time-dependent transport in open systems based on quantum master equations
• Intrinsic oscillations of spin current polarization in a paramagnetic resonant tunneling diode

Cited by in corpus (6)

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• Efficient solution of the Wigner-Liouville equation using a spectral decomposition of the force field
• Wigner-function formalism applied to semiconductor quantum devices: Need for nonlocal scattering models
• Unphysical features in the application of the Boltzmann collision operator in the time dependent modelling of quantum transport
• Resonant tunneling diodes in semiconductor microcavities: modeling polaritonic features in the THz displacement current
• Open quantum dynamics theory on the basis of periodical system-bath model for discrete Wigner function