Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
86 (1999), S. 5085-5093
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
A Wigner transport equation taking account nonparabolic energy band structures of electrons is formulated using the expanded power series dispersion relation in the kinetic energy term in the Hamiltonian. Numerical simulations for GaAs/AlGaAs resonant tunneling diodes are performed based on this model. In the analysis of steady-state current–voltage characteristics, the introduction of nonparabolicity gives overall reduced current densities. However, as in the case of mass correlation terms, the tunneling current when we include the correlation of spatially varying nonparabolicity parameter is bigger than that with constant nonparabolicity parameter. In the transient response analysis, it gives a damping effect which reduces the oscillatory behavior of current and electron densities. © 1999 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.371484
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