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Domain-wall superconductivity in a ferromagnet/superconductor/ferromagnet trilayer

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/j.physc.2005.12.074
Disciplines
  • Physics

Abstract

Abstract Domain-wall superconductivity is studied in a superconducting Nb film placed between two ferromagnetic Co/Pd multilayers with perpendicular magnetization. The parameters of top and bottom ferromagnetic films are chosen to provide different coercive fields, so that the magnetic domain structure of the ferromagnets can be selectively controlled. From the dependence of the critical temperature T c on the applied magnetic field H, we have found evidence for domain-wall superconductivity in this three-layered F/S/F-structure for different magnetic domain patterns. The phase boundary, calculated numerically for this structure from the linearized Ginzburg–Landau equation, is in good agreement with the experimental data.

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