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Chirality flips of skyrmion bubbles
Yuan Yao1, Bei Ding2, Jinjing Liang2,3
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China. yaoyuan@iphy.ac.cn.
Nature Communications
|October 11, 2022
Summary
Researchers reconstructed 3D magnetic skyrmion bubble structures in MnNiGa. The study found these magnetic bubbles switch chirality while maintaining polarity, offering insights into their fundamental behavior.
Area of Science:
- Condensed matter physics
- Materials science
- Magnetism
Background:
- Three-dimensional (3D) magnetic textures and chirality switching are crucial for fundamental research.
- Skyrmion bubbles are exotic spin textures with potential applications in data storage and spintronics.
Purpose of the Study:
- To reconstruct the 3D magnetic structures of skyrmion bubbles in the centrosymmetric magnet MnNiGa.
- To investigate the chirality switching behavior of these magnetic bubbles.
Main Methods:
- Vector field tomography approach.
- Lorentz transmission electron microscopy (LTEM).
- Reconstruction of magnetic induction (B-field) at bubble surfaces and centers.
Main Results:
- Successfully reconstructed the 3D magnetic structures of skyrmion bubbles in MnNiGa.
- Observed that skyrmion bubbles readily switch chirality.
- Demonstrated that bubble polarity is preserved during chirality switching, maintaining their singularity.
Conclusions:
- The study provides valuable insights into the chirality dynamics of skyrmion bubbles in centrosymmetric magnets.
- Understanding chirality switching is essential for controlling and utilizing skyrmion behavior in future magnetic devices.
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