Abstract
The singular nature of the Boltzmann transport equation leads to the boundary layer structure around the virtual source in nano-scale device structures. We show that the boundary layer is a key concept to understand the physical mechanism behind quasi-ballistic transport in nano-scale devices. The self-consistent 3D Monte Carlo device simulator is constructed by accurately including the full Coulomb interaction. It is explicitly shown that the Coulomb interaction is indeed a key ingredient for any reliable predictions of device characteristics.
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