Nanoengineered Magnetic-Field-Induced Superconductivity

Martin Lange; Margriet J. Van Bael; Yvan Bruynseraede; Victor V. Moshchalkov

doi:10.1103/PhysRevLett.90.197006

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Nanoengineered Magnetic-Field-Induced Superconductivity

Martin Lange, Margriet J. Van Bael, Yvan Bruynseraede, Victor V. Moshchalkov

DOI 10.1103/PhysRevLett.90.197006 · Physical Review Letters

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Abstract

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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	7.2	Pressure not reported	midpoint
(EuSn)Mo6S8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
λ-(BETS)2FeCl4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
HoMo6S8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown