Physics – Condensed Matter – Superconductivity
Scientific paper
2010-07-15
Appl. Phys. Lett. 97, 052501 (2010) (published with minor changes)
Physics
Condensed Matter
Superconductivity
Scientific paper
10.1063/1.3474622
We demonstrate experimentally that the presence of a single domain wall in an underlying ferromagnetic BaFe_{12}O_{19} substrate can induce a considerable asymmetry in the current (I) - voltage (V) characteristics of a superconducting Al bridge. The observed diode-like effect, i.e. polarity-dependent critical current, is associated with the formation of a vortex-free channel inside the superconducting area which increases the total current flowing through the superconducting bridge without dissipation. The vortex-free region appears only for a certain sign of the injected current and for a limited range of the external magnetic field.
Aladyshkin Yu. A.
Fritzsche J.
Kramer R. B. G.
Moshchalkov Victor V.
Vodolazov Denis Yu.
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