Magnetization-Dependent T c Shift in Ferromagnet/Superconductor/Ferromagnet Trilayers with a Strong Ferromagnet

By I. Moraru, W. Pratt, Jr.., N. Birge. 2005

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We have measured the superconducting transition temperature Tc of Ni/Nb/Ni trilayers when the magnetizations of the two outer Ni layers are parallel (P) and antiparallel (AP). The largest difference in occurs when the Nb thickness is just above the critical thickness at which superconductivity disappears completely. We have observed a difference in Tc between the P and AP states as large as 41 mK--a significant increase over earlier results in samples with higher Tc and with a CuNi alloy in place of the Ni. Our result also demonstrates that strong elemental ferromagnets are promising candidates for future investigations of ferromagnet/superconductor heterostructures.

Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics

View Paper: https://www.semanticscholar.org/paper/95b81ab862ec71958380a3ebf90ac7598af25933

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Citations in the corpus

• Nucleation of superconductivity and vortex matter in superconductor–ferromagnet hybrids (2009, background): “The antipode F/S/F heterostructures attract considerable attention in connection with the investigation of unusual properties of such layered hybrid structures governed by the mutual orientation of the vectors of the magnetization in the ‘top’ and ‘bottom’ ferromagnetic layers (see, e.g., the papers”