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← ScienceWhich mechanism maintains superconductivity when a magnetic field increases?
A)Flux pinning creates a gridlock.✓
B)Increased electron-phonon interaction elevates temperature.
C)Reduced quasiparticle scattering decreases resistance.
D)Phonon drag enhances electron flow.
💡 Explanation
Flux pinning maintains superconductivity because trapping magnetic flux quanta prevents Lorentz-force induced motion of vortices; therefore, superconductivity persists rather than being quenched, as increased vortex motion would cause dissipation.
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