Tunable pinning in superconducting films with magnetic micro-loops
arXiv:cond-mat/0611172 · doi:10.1063/1.2374798
Abstract
We study the flux pinning properties of superconductor/magnetic micro-rings lattice hybrid structures. The used open triangular micromagnets represent an eight-fold degree of freedom system, with six polarized and two flux-closure possible states. By conveniently choosing the magnetic state of the underlying rings it is possible to induce different pinning potentials. We show that the magnetic vortex state with minimum stray field produces a weaker pinning in comparison with the polarized states.
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- Quantitative assessment of pinning forces and the superconducting gap in NbN thin films from complementary magnetic force microscopy and transport measurements
- Switchable collective pinning of flux quanta using magnetic vortex arrays
- Direct observation of superconducting vortex clusters pinned by a periodic array of magnetic dots in ferromagnetic/superconducting hybrid structures
- Magnetic dipole induced guided vortex motion
- Self organized mode locking effect in superconductor / ferromagnet hybrids
- Rocking ratchet induced by pure magnetic potentials with broken reflection symmetry
- Reconfigurable pinwheel artificial-spin-ice and superconductor hybrid device
- Direct visualization of magnetic vortex pinning in superconductors
- Sudden Magnetization Drops in S/F bilayered Structures
- Magnetic nonreciprocity in a hybrid device of asymmetric artificial spin-ice-superconductors