Room temperature skyrmion ground state stabilized through interlayer exchange coupling
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- Gong Chen
- Lawrence Berkeley National Laboratory 1 NCEM, Molecular Foundry, , Berkeley, California 94720, USA
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- Arantzazu Mascaraque
- Universidad Complutense de Madrid 2 Depto. Física de Materiales, , 28040 Madrid, Spain
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- Alpha T. N'Diaye
- Lawrence Berkeley National Laboratory 4 Advanced Light Source, , Berkeley, California 94720, USA
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- Andreas K. Schmid
- Lawrence Berkeley National Laboratory 1 NCEM, Molecular Foundry, , Berkeley, California 94720, USA
書誌事項
- 公開日
- 2015-06-15
- DOI
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- 10.1063/1.4922726
- 公開者
- AIP Publishing
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説明
<jats:p>Possible magnetic skyrmion device applications motivate the search for structures that extend the stability of skyrmion spin textures to ambient temperature. Here, we demonstrate an experimental approach to stabilize a room temperature skyrmion ground state in chiral magnetic films via exchange coupling across non-magnetic spacer layers. Using spin polarized low-energy electron microscopy to measure all three Cartesian components of the magnetization vector, we image the spin textures in Fe/Ni films. We show how tuning the thickness of a copper spacer layer between chiral Fe/Ni films and perpendicularly magnetized Ni layers permits stabilization of a chiral stripe phase, a skyrmion phase, and a single domain phase. This strategy to stabilize skyrmion ground states can be extended to other magnetic thin film systems and may be useful for designing skyrmion based spintronics devices.</jats:p>
収録刊行物
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- Applied Physics Letters
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Applied Physics Letters 106 (24), 242404-, 2015-06-15
AIP Publishing
