Which mechanism limits maximum drain current through nanoscale MOSFET at high gate voltages?

💡 Explanation

At high gate voltages, electron velocity in nanoscale MOSFETs reaches a limit determined by velocity saturation, where electrons scatter with optical phonons thus limiting further current increase. Therefore velocity saturation occurs, rather than breakdown, modulation, or resistance which require different limiting factors.

• Which risk increases when using laser-induced breakdown spectroscopy (LIBS) on layered composite materials?
• Which outcome results when exceeding a fluid's yield stress?
• Which outcome results when an underwater acoustic projector exceeds its cavitation threshold?
• Which risk increases when a power transformer in an urban substation experiences a sudden and extreme shift in reactive power load?
• Which consequence results when a scanning tunneling microscope's bias exceeds alumina tunneling barrier potential?
• Which outcome occurs when a microwave oven's magnetron output couples excessively into its supply capacitor?