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← ScienceWhich mechanism hinders electron ballistic transport when a nanoscale transistor's channel length increases?
A)Increased electron-phonon scattering✓
B)Enhanced velocity overshoot
C)Reduced quantum confinement effects
D)Elevated source-drain tunneling rate
💡 Explanation
Increased channel length raises the probability of electron-phonon scattering which degrades ballistic transport causing momentum relaxation; therefore, electrons scatter more frequently, rather than maintain lossless travel because other transport effects diminish in prominence.
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