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Which phenomenon hinders electron flow when thermal energy perturbs a metallic crystal?

A)Increased phonon scattering
B)Augmented band gap width
C)Enhanced plasmon resonance
D)Elevated Cooper pair density

💡 Explanation

Increased thermal energy within the metallic crystal enhances atomic vibrations; phonon scattering then increases, because they disrupt electron movement through the lattice. Therefore electron flow decreases, rather than increasing, plasmon resonance, or Cooper pair density, caused by separate quantum behaviours.

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