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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2601.19181 |
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| _version_ | 1866910001914707968 |
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| author | Yalisove, Reed Zhang, Hongrui Chen, Xiang Meng, Fanhao Yao, Jie Birgeneau, Robert Ramesh, Ramamoorthy Scott, Mary C. |
| author_facet | Yalisove, Reed Zhang, Hongrui Chen, Xiang Meng, Fanhao Yao, Jie Birgeneau, Robert Ramesh, Ramamoorthy Scott, Mary C. |
| contents | Topologically protected magnetic textures are a promising route to low-energy control of magnetism, but they are most often studied away from ambient conditions, typically at low temperatures and high magnetic fields. Here we use in-situ Lorentz transmission electron microscopy with control of temperature and magnetic field to investigate the skyrmion metastability in (Fe0.5Co0.5)5GeTe2 (FCGT). By field-cooling FCGT in magnetic fields of different magnitude to different base temperatures and then removing the applied field, we create meta(stable) zero-field magnetic states. We use this method to build a phase diagram of the zero-field metastable spin structures in FCGT, which will be critical for selecting the desired topologically-protected spin state for future studies to manipulate magnetism with stimuli such as electric current, electric field, mechanical strain, and more. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_19181 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Mapping Metastable Magnetic Textures in (Fe0.5Co0.5)5GeTe2 with in-situ Lorentz Transmission Electron Microscopy Yalisove, Reed Zhang, Hongrui Chen, Xiang Meng, Fanhao Yao, Jie Birgeneau, Robert Ramesh, Ramamoorthy Scott, Mary C. Materials Science Topologically protected magnetic textures are a promising route to low-energy control of magnetism, but they are most often studied away from ambient conditions, typically at low temperatures and high magnetic fields. Here we use in-situ Lorentz transmission electron microscopy with control of temperature and magnetic field to investigate the skyrmion metastability in (Fe0.5Co0.5)5GeTe2 (FCGT). By field-cooling FCGT in magnetic fields of different magnitude to different base temperatures and then removing the applied field, we create meta(stable) zero-field magnetic states. We use this method to build a phase diagram of the zero-field metastable spin structures in FCGT, which will be critical for selecting the desired topologically-protected spin state for future studies to manipulate magnetism with stimuli such as electric current, electric field, mechanical strain, and more. |
| title | Mapping Metastable Magnetic Textures in (Fe0.5Co0.5)5GeTe2 with in-situ Lorentz Transmission Electron Microscopy |
| topic | Materials Science |
| url | https://arxiv.org/abs/2601.19181 |