Which phenomenon prevents classical CMOS scaling below 5nm due to increased leakage?

💡 Explanation

Quantum tunneling allows electrons to pass through gate oxide even when classically forbidden, because the wave function penetrates the barrier. Therefore, subthreshold leakage increases exponentially, rather than behaving according to classical scaling, limiting device performance.

• Which mechanism causes modal breakup in multimode fiber carrying a high-power laser?
• Which outcome results when stellar fusion byproducts undergo beta decay within a white dwarf?
• Which consequence results when thermal runaway occurs during the polymerisation of methyl methacrylate within a poorly cooled industrial reactor?
• Which risk increases when rapidly switching a capacitor in high-voltage DC transmission?
• Which outcome occurs when a non-ideal catalyst contaminates a chemical reactor?
• Within Scanning Tunneling Microscopy, which mechanism governs electron flow between tip and surface?