Enhancement of flux-line pinning in all-oxide superconductor/ferromagnet heterostructures

Details Enhancement of flux-line pinning in all-oxide superconductor/ferromagnet heterostructures Enhancement of flux-line pinning in all-oxide superconductor/ferromagnet heterostructures

2004-01-05

arxiv.org/abs/cond-mat/0401033v1

Physics

Condensed Matter

Superconductivity

9 pages

Scientific paper

10.1088/0953-2048/17/5/010

We have studied the local critical current density, jc, in the superconductor thin film of bilayer structures consisting of YBa2Cu3O7 and the ferromagnets La2/3Ca1/3MnO3 and SrRuO3, respectively, by means of quantitative magneto-optics. A pronounced hysteresis of jc was observed which is ascribed to the magnetization state of the ferromagnetic layer. The results are discussed within the frame of magnetic vortex - wall interactions.

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