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← ScienceWhich consequence results when a nanoscale tunnel junction is contaminated?
A)Increased tunneling resistance is observed✓
B)Capacitance increases dramatically
C)The Fermi level shifts unexpectedly
D)Mechanical resonance frequencies rise
💡 Explanation
Contamination introduces an insulating layer, increasing the potential barrier width; therefore, **quantum tunneling** is exponentially suppressed, decreasing the tunneling probability and increasing resistance, because the thinner barrier is blocked rather than causing alternative effects.
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