Short-channel effect immunity and current capability of sub-0.1-micron MOSFET's using a recessed channel

Sub-0.1-/spl mu/m planar and gate recessed MOSFET's are investigated using both drift-diffusion and Monte Carlo simulations. In nonplanar devices, the influence of the gate corner explains that the threshold voltage roll-off can be almost suppressed. A steeper subthreshold slope (low swing) is also obtained for a channel length shorter than 50 nm when the recessed channel MOSFET is compared to its planar counterpart. The influence of the corner effect on high-current performances is also considered in relation with the electric field profile along the Si/SiO/sub 2/ interface.