Wigner Function Formalism for Zero Magnetic Field Spin Dependent Resonant Tunneling Structures
Mesoscale and Nanoscale Physics
2007-05-23 v2
Abstract
We develop a Wigner function representation of the quantum transport theory of the conduction band electrons in Rashba effect resonant tunneling structures with a phonon bath. In narrow band gap heterostructures, spin splitting occurs mainly as a result of inversion asymmetry in the spatial dependence of the potential or as a result of external electric field. This "zero magnetic field spin splitting" is due to the Rashba term in the effective mass Hamiltonian. The quantum transport equations are derived using multi-band non-equilibrium Green's function formulation in generalized Kadanoff-Baym ansatz.
Cite
@article{arxiv.cond-mat/0409595,
title = {Wigner Function Formalism for Zero Magnetic Field Spin Dependent Resonant Tunneling Structures},
author = {Mehmet Burcin Unlu and Hong-Liang Cui},
journal= {arXiv preprint arXiv:cond-mat/0409595},
year = {2007}
}
Comments
11 pages