Thermal Stability of Skyrmion Tubes in Nanostructured Cuboids
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arXiv
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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866929717235417088 |
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| author | Jailiang, Jiang Jin, Tang Tian, Bai Yaodong, Wu Jiazhuan, Qin Weixing, Xia Renjie, Chen Aru, Yan Shouguo, Wang Mingliang, Tian Haifeng, Du |
| author_facet | Jailiang, Jiang Jin, Tang Tian, Bai Yaodong, Wu Jiazhuan, Qin Weixing, Xia Renjie, Chen Aru, Yan Shouguo, Wang Mingliang, Tian Haifeng, Du |
| contents | Magnetic skyrmions in bulk materials are typically regarded as two-dimensional structures. However, they also exhibit three-dimensional configurations, known as skyrmion tubes, which elongate and extend in-depth. Understanding the configurations and stabilization mechanism of skyrmion tubes is crucial for the development of advanced spintronic devices. However, the generation and annihilation of skyrmion tubes in confined geometries are still rarely reported. Here, we present direct imaging of skyrmion tubes in nanostructured cuboids of a chiral magnet FeGe using Lorentz transmission electronic microscopy (TEM), while applying an in-plane magnetic field. It is observed that skyrmion tubes stabilize in a narrow field-temperature region near the Curie temperature (Tc). Through a field cooling process, metastable skyrmion tubes can exist in a larger region of the field-temperature diagram. Combining these experimental findings with micromagnetic simulations, we attribute these phenomena to energy differences and thermal fluctuations. Our results could promote topological spintronic devices based on skyrmion tubes. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2502_10651 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Thermal Stability of Skyrmion Tubes in Nanostructured Cuboids Jailiang, Jiang Jin, Tang Tian, Bai Yaodong, Wu Jiazhuan, Qin Weixing, Xia Renjie, Chen Aru, Yan Shouguo, Wang Mingliang, Tian Haifeng, Du Mesoscale and Nanoscale Physics Materials Science Applied Physics Magnetic skyrmions in bulk materials are typically regarded as two-dimensional structures. However, they also exhibit three-dimensional configurations, known as skyrmion tubes, which elongate and extend in-depth. Understanding the configurations and stabilization mechanism of skyrmion tubes is crucial for the development of advanced spintronic devices. However, the generation and annihilation of skyrmion tubes in confined geometries are still rarely reported. Here, we present direct imaging of skyrmion tubes in nanostructured cuboids of a chiral magnet FeGe using Lorentz transmission electronic microscopy (TEM), while applying an in-plane magnetic field. It is observed that skyrmion tubes stabilize in a narrow field-temperature region near the Curie temperature (Tc). Through a field cooling process, metastable skyrmion tubes can exist in a larger region of the field-temperature diagram. Combining these experimental findings with micromagnetic simulations, we attribute these phenomena to energy differences and thermal fluctuations. Our results could promote topological spintronic devices based on skyrmion tubes. |
| title | Thermal Stability of Skyrmion Tubes in Nanostructured Cuboids |
| topic | Mesoscale and Nanoscale Physics Materials Science Applied Physics |
| url | https://arxiv.org/abs/2502.10651 |