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← ScienceWhich condition prevents bulk superconductivity despite optimal doping?
A)High concentration of magnetic impurities✓
B)Elevated operational hydrostatic pressure
C)Excessive phonon dispersion effects
D)Reduced isotope effect magnitude
💡 Explanation
Magnetic impurities disrupt Cooper pairing, causing suppression of superconductivity because of increased spin-flip scattering. Therefore, high concentrations of magnetic impurities prevent bulk superconductivity, rather than conditions altering pressure or phonons.
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