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The history of superconductivity
The occurrence of superconductivity
7 other sections not shown
absolute zero application armature bulk critical field circuit coherence length composite conductor consider constant copper critical current density critical temperature cryotron current flow curve cylinder decrease device diameter energy gap energy of magnetisation Equation external field strength Fermi energy field strength filaments film flux density flux flow flux jump flux penetration flux quantum free energy frequency function given hard superconductor high-field hysteresis hysteresis loss increase insulating Josephson junction lattice layer lead Lorentz force magnetic field magnetic flux matrix Meissner effect Nb3Sn niobium niobium-tin niobium-titanium obtained operation paramagnetism parameter penetration depth penetration profiles phase phonons Phys pinning strength plate reduced region rotor sample saturation current Section shielding currents shown in Figure soft superconductor specific heat stabilisation stability super superconducting magnet superconducting wire surface resistance thermal conductivity thickness transformer transport current tunnel current type II superconductor typical upper critical field variation velocity voltage gradient vortices wavefunction width winding