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Published on: February 1, 2017
Interaction between superconducting vortices and a Bloch wall in ferrite garnet films
J I Vestgården1, D V Shantsev, A A F Olsen
1Department of Physics and Center for Materials Science and Nanotechnology, University of Oslo, P.O. Box 1048, Blindern, 0316 Oslo, Norway.
Physical Review Letters
|May 16, 2007
Summary
Bloch walls in ferrite garnet films act as magnetic micromanipulators. This model explains vortex attraction to these walls, matching experimental data for magnetic flux profiles.
Area of Science:
- Condensed matter physics
- Materials science
Background:
- Bloch walls in magnetic films possess unique properties.
- Interactions between magnetic structures and superconductors are of significant interest.
Purpose of the Study:
- To present a theoretical model for Bloch walls as magnetic micromanipulators.
- To analyze the interaction between Bloch walls and Abrikosov vortices in superconductors.
Main Methods:
- Theoretical modeling of Bloch wall behavior.
- Application of the London approximation for superconductor analysis.
- Comparison with experimental data from high-resolution magneto-optical imaging.
Main Results:
- The model successfully explains the attraction of Abrikosov vortices to Bloch walls.
- Quantitative agreement was achieved for the peaked flux profile observed experimentally.
- The model accounts for the attraction between vortices and charged magnetic walls of opposite polarity.
Conclusions:
- Bloch walls can function as effective magnetic micromanipulators.
- The theoretical model provides a robust explanation for vortex-wall interactions.
- This work offers insights into controlling magnetic flux at the nanoscale.
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