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APS » Journals » Phys. Rev. Lett. » Volume 90 » Issue 19
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Phys. Rev. Lett. 90, 197006 (2003) [4 pages]

Nanoengineered Magnetic-Field-Induced Superconductivity

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Martin Lange*, Margriet J. Van Bael, Yvan Bruynseraede, and Victor V. Moshchalkov
Laboratorium voor Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium

Received 4 September 2002; published 15 May 2003

See accompanying Physics Focus

The perpendicular critical fields of a superconducting film have been strongly enhanced by using a nanoengineered lattice of magnetic dots (dipoles) on top of the film. Magnetic-field-induced superconductivity is observed in these hybrid superconductor/ferromagnet systems due to the compensation of the applied field between the dots by the stray field of the dipole array. By switching between different magnetic states of the nanoengineered field compensator, the critical parameters of the superconductor can be effectively controlled.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.197006
DOI:
10.1103/PhysRevLett.90.197006
PACS:
74.25.Dw, 74.78.Db, 75.75.+a

*Electronic address: martin.lange@fys.kuleuven.ac.be

 
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