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← ScienceWhich mechanism causes increased electron tunneling when bias increases?
A)Fowler-Nordheim quantum mechanical tunneling✓
B)Increased electron effective collision diameter
C)Elevated plasmon excitation threshold
D)Inter-valley phonon scattering enhancement
💡 Explanation
Increased bias enhances the **Fowler-Nordheim quantum mechanical tunneling** because it narrows the potential energy barrier, thus higher tunneling probability follows; therefore, higher electron tunneling results, rather than thermal effects or phonon scattering.
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