Flux pumping is a phenomenon that occurs in superconductors and is related to the movement of magnetic flux lines through a superconductor when it is in a state of persistent current. This phenomenon is particularly relevant in the study of type-II superconductors, which allow magnetic flux to penetrate their surface while still maintaining zero electrical resistance. In type-II superconductors, when exposed to an external magnetic field, the material allows magnetic flux to enter in discrete quantized units known as fluxoids or magnetic vortices.
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