Considerable enhancement of the critical current in a superconducting film by magnetized magnetic strip
arXiv:cond-mat/0504229 · doi:10.1103/PhysRevB.72.064509
Abstract
We show that a magnetic strip on top of a superconducting strip magnetized in a specified direction may considerably enhance the critical current in the sample. At fixed magnetization of the magnet we observed diode effect - the value of the critical current depends on the direction of the transport current. We explain these effects by a influence of the nonuniform magnetic field induced by the magnet on the current distribution in the superconducting strip. The experiment on a hybrid Nb/Co structure confirmed the predicted variation of the critical current with a changing value of magnetization and direction of the transport current.
6 pages, 7 figures
References in corpus (4)
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- Microwave-Tunable Diode Effect in Asymmetric SQUIDs with Topological Josephson Junctions
- Superconducting Diode Effects: Mechanisms, Materials and Applications
- Supercurrent diode effect in thin film Nb tracks
- Planar superconductor/ferromagnet hybrids: Anisotropy of resistivity induced by magnetic templates
- Strong influence of a magnetic layer on the critical current of Nb bridge in finite magnetic fields due to surface barrier effect
- Reverse-domain superconductivity in superconductor-ferromagnet hybrids: effect of a vortex-free channel on the symmetry of I-V characteristics
- Photogalvanic phenomena in superconductors supporting intrinsic diode effect
- Influence of capacitance and thermal fluctuations on the Josephson diode effect in asymmetric higher-harmonic SQUIDs
- Vortex structure and intervortex interaction in superconducting structures with intrinsic diode effect