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← ScienceWhich mechanism induces perfect conductivity when a niobium-titanium alloy is cooled near absolute zero?
A)Cooper pair formation✓
B)Increased electron scattering
C)Phonon-induced resistance enhancement
D)Fermi level depopulation
💡 Explanation
The material becomes superconducting because, at low temperatures, electrons form Cooper pairs via electron-phonon interactions; therefore, electron transport experiences no resistance due to Cooper Pair formation overcoming electron scattering, rather than resistance increasing with lower temperature.
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