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Magnetic Skyrmion Materials
Yoshinori Tokura1,2,3, Naoya Kanazawa1
1Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan.
Chemical Reviews
|November 9, 2020
Summary
Magnetic skyrmions, topologically protected spin textures in helimagnetic materials, offer metastability and low-energy motion for spintronics. This review details their materials science, chemistry, and emergent phenomena.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Magnetic skyrmions are particle-like topological spin textures with potential spintronics applications.
- Their unique properties stem from a topologically protected, swirling spin structure.
Purpose of the Study:
- To review the materials science and chemistry of magnetic skyrmions.
- To explore emergent phenomena and functions mediated by skyrmions.
- To discuss related magnetic topological defects.
Main Methods:
- Classification of skyrmion formation mechanisms.
- Review of materials hosting skyrmions (chiral, polar, bilayered, centrosymmetric magnets).
- Analysis of emergent magnetic/electric fields and magnetoelectric effects.
Main Results:
- Magnetic skyrmions exhibit metastability and low-current-driven motion due to topological protection.
- Skyrmions can form lattice or isolated structures in various magnetic materials.
- Emergent phenomena include magnetic/electric fields and magnetoelectric effects.
Conclusions:
- Magnetic skyrmions are promising for future spintronic devices.
- Understanding their material basis and emergent properties is crucial for applications.
- Interplay with other topological defects like biskyrmions and merons warrants further study.
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