Reverse-domain superconductivity in superconductor-ferromagnet hybrids: effect of a vortex-free channel on the symmetry of I-V characteristics
arXiv:1007.2527 · doi:10.1063/1.3474622
Abstract
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.
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Cited by in corpus (4)
- Field-free superconducting diode effect in noncentrosymmetric superconductor/ferromagnet multilayers
- Crossover between different regimes of inhomogeneous superconductivity in planar superconductor-ferromagnet hybrids
- Domain - wall - induced magnetoresistance in pseudo spin-valve/superconductor hybrid structures
- Influence of capacitance and thermal fluctuations on the Josephson diode effect in asymmetric higher-harmonic SQUIDs