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← ScienceWhich mechanism causes increased electron tunneling across semiconductor interfaces in strained silicon MOSFETs?
A)Crystal lattice spacing alteration widens depletion
B)Quantum confinement raises energy barriers
C)Orbital hybridization lowers effective mass✓
D)Phonon scattering increases carrier velocity
💡 Explanation
Orbital hybridization modifies the band structure; therefore the effective electron mass decreases, augmenting tunneling probability because the electrons behave as increasingly delocalized waves, rather than localized particles. Phonon scattering and widened depletion regions alter classical conductivity.
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