4.8 Selection of the Energy Grid

For a numerical solution of the transport equations one has to discretize the GREEN's functions in the energy domain. However, due to the presence of narrow resonances at some energies one has to be careful about the selection of the energy grid. An approximation for the electron concentration due to a confined state is derived. This analytical function is used as a reference for comparing the results of the non-adaptive and adaptive methods of selecting the energy grid.
Subsections M. Pourfath: Numerical Study of Quantum Transport in Carbon Nanotube-Based Transistors