J.S. Villarrubia, John J. Boland
Physical Review Letters
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.
J.S. Villarrubia, John J. Boland
Physical Review Letters
Takeshi Takamori, Tadashi Mizoguchi, et al.
Materials Research Bulletin
Omesh Sahni, Paul M. Alt, et al.
IEEE T-ED
John J. Boland, Eugenio Segredo
Journal of Applied Physics