J.S. Villarrubia, John J. Boland
Physical Review Letters
Paper
Controlled levitation of a large magnet above superconductors
Abstract
The levitation of a permanent magnet over a type-II superconductor may be modified and controlled by the addition of a variable magnetic field to the magnet-superconductor system. Using this scheme, levitation of a magnet of significantly larger mass was established by the direct interaction of the additonal field with the levitating magnet.
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