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← ScienceWhich mechanism causes increased electrical resistance when dislocations accumulate in a crystal lattice?
A)Phonon scattering by lattice imperfections✓
B)Increased electron mean free path
C)Reduced Fermi surface boundary effects
D)Enhanced Bloch wave transmission probability
💡 Explanation
Phonon scattering increases resistance because imperfections in the lattice disrupt the periodic potential; this disrupts electron flow through momentum transfer (phonon scattering). Therefore resistance increases, rather than decreasing conductivity caused by smoother lattice.
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