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← ScienceWhich mechanism causes quantized magnetic flux through superconducting rings?
A)Meissner effect expels magnetic fields
B)London penetration depth limits fluxes
C)Flux pinning traps magnetic domains
D)Cooper pairing creates charge carriers✓
💡 Explanation
Cooper pairing creates correlated electrons with integer charge; therefore flux quantization occurs in units of fluxons, rather than fractional values, because the paired charge gives rise to a macroscopically coherent quantum state.
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