Superconducting vortex pinning with artificial magnetic nanostructures

M. Vélez, J. I. Martín, J. E. Villegas, A. Hoffmann, E. M. González, J. L. Vicent, Ivan K. Schuller

Research output: Contribution to journalReview articlepeer-review

Abstract

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.

Original languageEnglish (US)
Pages (from-to)2547-2562
Number of pages16
JournalJournal of Magnetism and Magnetic Materials
Volume320
Issue number21
DOIs
StatePublished - Nov 2008
Externally publishedYes

Keywords

  • Magnetic nanostructure
  • Superconducting thin film
  • Vortex pinning

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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