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arXiv · 1105.6048

Domain-wall and reverse-domain superconducting states of a Pb thin-film bridge on a ferromagnetic BaFe_{12}O_{19} single crystal

R. Werner·A. Yu. Aladyshkin·S. Guenon·J. Fritzsche·I. M. Nefedov·V. V. Moshchalkov·R. Kleiner·D. Koelle
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Abstract

We report on imaging of the nonuniform superconducting states in a Pb thin film bridge on top of a ferromagnetic BaFe_{12}O_{19} single crystal with a single straight domain wall along the center of the bridge by low-temperature scanning laser microscopy. We have visualized domain wall superconductivity (DWS) close to the critical temperature of Pb, when the Pb film above the domain wall acts as a superconducting path for the current. The evolution of the DWS signal with temperature and the external-field-driven transition from DWS to reverse domain superconductivity was visualized.

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R. Werner, A. Yu. Aladyshkin, S. Guenon, J. Fritzsche, I. M. Nefedov, V. V. Moshchalkov, R. Kleiner, D. Koelle. 2011-05-30. Domain-wall and reverse-domain superconducting states of a Pb thin-film bridge on a ferromagnetic BaFe_{12}O_{19} single crystal. https://doi.org/10.1103/physrevb.84.020505

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