Superconducting vortex pinning with artificial magnetic nanostructures

By M. Vélez, José I. Martín, J. Villegas, Axel Hoffmann, E. González, J. Vicent, I. Schuller. 2008

186 citations recorded by the source corpus.

This review is dedicated to summarizing the recent research on vortex dynamics and pinning effects in superconducting films with artificial magnetic structures. The fabrication of hybrid superconducting/ magnetic systems is presented together with the wide variety of properties that arise from the interaction between the superconducting vortex lattice and the artificial magnetic nanostructures. Specifically, we review the role that the most important parameters in the vortex dynamics of films with regular array of dots play. In particular, we discuss the phenomena that appear when the symmetry of a regular dot array is distorted from regularity towards complete disorder including rectangular, asymmetric, and aperiodic arrays. The interesting phenomena that appear include vortex-lattice reconfigurations, anisotropic dynamics, channeling, and guided motion as well as ratchet effects. The different regimes are summarized in a phase diagram indicating the transitions that take place as the characteristic distances of the array are modified respect to the superconducting coherence length. Future directions are sketched out indicating the vast open area of research in this field.

Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics

View Paper: https://www.semanticscholar.org/paper/51f50ecf91de997594ed5262d90160ee6be2f3cc

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Citations in the corpus

• Nucleation of superconductivity and vortex matter in superconductor–ferromagnet hybrids (2009, methodology): “hybrids have been recently analyzed by Vélez et al [41] and the fabrication of ordered magnetic nanostructures has been earlier considered by Martı́n et al [42].”
• Focused electron beam induced deposition meets materials science (2017, methodology): “artificial nanostructures inducing a spatial modulation of the vortex energy are widely used for the manipulation of Abrikosov vortices [108, 106].”