Which mechanism limits microprocessor clock frequency scaling when quantum tunneling effects increase in significance?

💡 Explanation

When quantum tunneling becomes significant, electrons can tunnel through gate dielectrics, because shrinking feature sizes reduce the barrier width, leading to increased current leakage influencing clock frequency. Therefore increased leakage occurs, rather than mobility reduction, scattering, or thermal emission, which are caused by different factors.

• Which outcome occurs when two atoms approach with unfavorable orbital symmetries?
• Which outcome results when rapid cooling locks a crystal in a metastable state?
• Which consequence results when engineers improperly apply the Hagen–Poiseuille equation to a rough-walled pipe?
• Which outcome results when thermal energy increases in semiconductor junctions?
• Which outcome impairs a refrigeration cycle operating beyond coolant pressure ratings?
• Which safety outcome ensures maximal attenuation if a pulsed laser welds two mirrored steel plates?