Vortex Plasma in a Superconducting Film with Magnetic Dots

Abstract

We consider a superconducting film, placed upon a magnetic dot array. Magnetic moments of the dots are normal to the film and randomly oriented. We determine how the concentration of the vortices in the film depends on the magnetic moment of a dot at low temperatures. The concentration of the vortices, bound to the dots, is proportional to the density of the dots and depends on the magnetization of a dot in a step-like way. The concentration of the unbound vortices oscillates about a value, proportional to the magnetic moment of the dots. The period of the oscillations is equal to the width of a step in the concentration of the bound vortices.

RevTeX, 4 pages

References in corpus (1)

• Magnetization Controlled Superconductivity in a Film with Magnetic Dots

Cited by in corpus (6)

• Ferromagnet-Superconductor Hybrids
• Interaction of Mesoscopic Magnetic Textures with Superconductors
• Berezinskii-Kosterlitz-Thouless transition in homogeneously disordered superconducting films
• Superconducting Transition Temperature in Heterogeneous Ferromagnet-Superconductor Systems
• Symmetry Violation in a Superconducting Film with a Square Array of Ferromagnetic Dots
• Theory of pinning in a Superconducting Thin Film Pierced by a Ferromagnetic Columnar Defect