Directional vortex motion guided by artificially induced mesoscopic potentials

2003/07/17 by Javier E. Villegas, J. E. Villegas, E. M. Gonzalez +6 · 3 citations
Engineering · Physics and Astronomy · #Characterization and Applications of Magnetic Nanoparticles #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.68.224504

published as Published in Phys. Rev. B 68, 224504 (2003) · PDF file includes figures

arxiv created 2003/07/17 · openalex publication_date 2003/12/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Rectangular pinning arrays of Ni dots define a potential landscape for vortex motion in Nb films. Magnetotransport experiments in which two in-plane orthogonal electrical currents are injected simultaneously allow one to select the direction and magnitude of the Lorentz force on the vortex lattice, thus providing the angular dependence of the vortex motion. The background dissipation depends on the angle at low magnetic fields, which is progressively smeared out with increasing field. The periodic potential locks in the vortex motion along channeling directions. Because of this, the vortex-lattice direction of motion is up to 85^o away from the applied Lorentz force direction.

Citations

• Phase Locking, Devil's Staircases, Farey Trees, and Arnold Tongues in Driven Vortex Lattices with Periodic Pinning
• Hysteresis and fractional matching in thin Nb films with rectangular arrays of nanoscaled magnetic dots

Cited by

• Structural transitions and dynamical regimes for directional locking of vortices and colloids driven over periodic substrates
• Highly effective superconducting vortex pinning in conformal crystals
• Critical Currents in Quasiperiodic Pinning Arrays: Chains and Penrose Lattices